Re: bug in SDFScheduler?
Hey Stephen, Here's the error. I'm not sure why it's complaining about the consumption rate. What is happening is there is a input port connected to a repeat actor. the number of iterations of the repeat actor is set by a portparam. The portparam is set statically by a higher level parameter at design time. It is never actually changed during runtime (as the error seems to indicate), but the director seems to think it could be changed and complains. chad [java] ptolemy.kernel.util.IllegalActionException: Failed to compute schedule: [java] in .distributedModel.DistributedCompositeActor.SDF Director [java] Because: [java] The SDF rate parameter changes during execution of the schedule! [java] in .distributedModel.DistributedCompositeActor.Calculate Best Rulesets.longitude_latitude_table._tokenConsumptionRate [java] at ptolemy.domains.sdf.kernel.SDFDirector.preinitialize(SDFDirector.java:548) [java] at ptolemy.actor.CompositeActor.preinitialize(CompositeActor.java:1076) [java] at ptolemy.actor.Director.preinitialize(Director.java:865) [java] at ptolemy.domains.sdf.kernel.SDFDirector.preinitialize(SDFDirector.java:527) [java] at ptolemy.actor.CompositeActor.preinitialize(CompositeActor.java:1076) [java] at ptolemy.actor.Manager.preinitializeAndResolveTypes(Manager.java:912) [java] at ptolemy.actor.Manager.initialize(Manager.java:578) [java] at ptolemy.actor.Manager.execute(Manager.java:321) [java] at org.kepler.distributed.SlaveController.run(SlaveController.java:514) [java] at org.kepler.distributed.SlaveController.ready(SlaveController.java:738) [java] at sun.reflect.GeneratedMethodAccessor32.invoke(Unknown Source) [java] at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25) [java] at java.lang.reflect.Method.invoke(Method.java:585) [java] at sun.rmi.server.UnicastServerRef.dispatch(UnicastServerRef.java:294) [java] at sun.rmi.transport.Transport$1.run(Transport.java:153) [java] at java.security.AccessController.doPrivileged(Native Method) [java] at sun.rmi.transport.Transport.serviceCall(Transport.java:149) [java] at sun.rmi.transport.tcp.TCPTransport.handleMessages(TCPTransport.java:466) [java] at sun.rmi.transport.tcp.TCPTransport$ConnectionHandler.run(TCPTransport.java:707) [java] at java.lang.Thread.run(Thread.java:595) [java] Caused by: ptolemy.kernel.util.IllegalActionException: The SDF rate parameter changes during execution of the schedule! [java] in .distributedModel.DistributedCompositeActor.Calculate Best Rulesets.longitude_latitude_table._tokenConsumptionRate [java] at ptolemy.domains.sdf.kernel.SDFScheduler._assertDynamicRateVariable(SDFScheduler.java:869) [java] at ptolemy.domains.sdf.kernel.SDFScheduler._checkDynamicRateVariables(SDFScheduler.java:306) [java] at ptolemy.domains.sdf.kernel.SDFScheduler._getSchedule(SDFScheduler.java:501) [java] at ptolemy.actor.sched.Scheduler.getSchedule(Scheduler.java:188) [java] at ptolemy.domains.sdf.kernel.SDFDirector.preinitialize(SDFDirector.java:542) [java] ... 19 more [java] Caused by: ptolemy.kernel.util.IllegalActionException: The SDF rate parameter changes during execution of the schedule! [java] in .distributedModel.DistributedCompositeActor.Calculate Best Rulesets.longitude_latitude_table._tokenConsumptionRate [java] at ptolemy.domains.sdf.kernel.SDFScheduler._assertDynamicRateVariable(SDFScheduler.java:869) [java] at ptolemy.domains.sdf.kernel.SDFScheduler._checkDynamicRateVariables(SDFScheduler.java:306) [java] at ptolemy.domains.sdf.kernel.SDFScheduler._getSchedule(SDFScheduler.java:501) [java] at ptolemy.actor.sched.Scheduler.getSchedule(Scheduler.java:188) [java] at ptolemy.domains.sdf.kernel.SDFDirector.preinitialize(SDFDirector.java:542) [java] at ptolemy.actor.CompositeActor.preinitialize(CompositeActor.java:1076) [java] at ptolemy.actor.Director.preinitialize(Director.java:865) [java] at ptolemy.domains.sdf.kernel.SDFDirector.preinitialize(SDFDirector.java:527) [java] at ptolemy.actor.CompositeActor.preinitialize(CompositeActor.java:1076) [java] at ptolemy.actor.Manager.preinitializeAndResolveTypes(Manager.java:912) [java] at ptolemy.actor.Manager.initialize(Manager.java:578) [java] at ptolemy.actor.Manager.execute(Manager.java:321) [java] at org.kepler.distributed.SlaveController.run(SlaveController.java:514) [java] at org.kepler.distributed.SlaveController.ready(SlaveController.java:738) [java] at sun.reflect.GeneratedMethodAccessor32.invoke(Unknown Source) [java] at
Re: actor configuration pane customization
Thanks Edward, that totally worked. chad Edward A. Lee wrote: I think you want to extend EditorFactory rather than EditorPaneFactory. Edward At 01:47 PM 10/9/2007, you wrote: Hi, I've recently customized the configuration pane on one of my actors by extending EditorPaneFactory. The problem I'm having is that the default buttons in the configuration dialog still appear, although they now make no sense in my dialog. Is there a way to keep all or some of them from appearing? thanks, chad Posted to the ptolemy-hackers mailing list. Please send administrative mail for this list to: [EMAIL PROTECTED] Edward A. Lee Chair of EECS and Robert S. Pepper Distinguished Professor 231 Cory Hall, UC Berkeley, Berkeley, CA 94720-1770 phone: 510-642-0253, fax: 510-642-2845 [EMAIL PROTECTED], http://ptolemy.eecs.berkeley.edu/~eal Posted to the ptolemy-hackers mailing list. Please send administrative mail for this list to: [EMAIL PROTECTED]
actor configuration pane customization
Hi, I've recently customized the configuration pane on one of my actors by extending EditorPaneFactory. The problem I'm having is that the default buttons in the configuration dialog still appear, although they now make no sense in my dialog. Is there a way to keep all or some of them from appearing? thanks, chad Posted to the ptolemy-hackers mailing list. Please send administrative mail for this list to: [EMAIL PROTECTED]
Re: Looking for a 802.11 or 802.15.4 actor
Hi Manuel There is a start on some 802.11 actors in ptII/ptolemy/domains/wireless/lib/network This directory is not shipped as part of the Ptolemy releases, but is available via CVS. To get access via read only cvs, see http://chess.eecs.berkeley.edu/ptexternal I have no idea if this code works at all, but it might be a start. _Christopher I am looking for a 802.11 or 802.15.4 actor . Has anyone built any of these kind of actors or similar actors ? Thanks Manuel Ferreira Posted to the ptolemy-hackers mailing list. Please send administrative mail for this list to: [EMAIL PROTECTED]
Re: Data Type Mapping
Edward et. al, Perhaps I should have prefaced my request with an explanation of what I am up too. I am working on the REAP project (Which I imagine you are already familiar with. The REAP's PIs include the lead PIs that initiated the Kepler project e.g., Ludäscher, Jones, Altintas, etc.) Part of the REAP project is to provide data integration with OPeNDAP data sources (www.opendap.org). From my (so far limited) view of PTII and Kepler it seems that many of the OPeNDAP datasources include data sets whose structure is from new (to PTII and Kepler) scientific domains and in many cases includes 4D data. Global atmospheric models and satellite orbits are two examples of such data. The OPeNDAP data model and the PTII data model have many similarities, but they diverge in that: - The OPeNDAP data model is optimized for multidimensional arrays. - The OPeNDAP data model supports a Grid data type that encapsulates map vector semantics for multidimensional gridded data. Both of these data types represent high value content that the REAP project would like to make available in PTII/Kepler. I hope a little background helps to further our discussion. On Aug 6, 2007, at 5:39 AM, Edward A. Lee wrote: Nathan, Perhaps it would help to explain the reason for the current design: The existence is MatrixToken types has two motivations. First, matrices have a natural set of operations that require fairly sophisticated libraries to support (multiplication, inverse, eigenvalue computation, etc.). As far as I known, there are no such natural operations for higher dimensional matrices. Second, algorithms using matrices need to be efficient. Data should be represented using native Java data types, not wrapped in Tokens. That kind of optimization is very useful, and is exactly what is done for all arrays in the reference implementations of the OPeNDAP data model. In my experience, how to represent higher dimensional data really depends on the application. E.g., images are 2-D, and can be represented in matrix types. Video is 3-D, and is naturally represented as a sequence of matrix tokens. By mapping the OPeNDAP data model into PTII/Kepler we will be making available many multidimensional data sets, including 4D atmospheric models. Many of these data sets are quite large, so storage/ processing optimizations like the one used in the MatrixToken data type are generally favored. Part of this process is to determine how to most effectively represent this information in the target(PTII/Kepler) data model. This should be driven in part by the tools available in the application for subseting and slicing the data. At this point, based on your comments and those posted by C. Brooks, my instinct is to develop a prototype based using MatrixTokens for all 2D arrays and nested ArrayTokens elsewhere, as required. You make an excellent point about the optimization of using the native java types for arrays, and certainly promoting individual array values to ArrayToken objects will probably create serious memory usage and performance issues in the long run. I can see a couple of alternate mechainsms for addressing this: - Extend the PTII/Kepler data model with a more generalized array type that uses an efficient storage mechanism and that provides a reasonable interface for sub-setting/slicing/dicing the array. I am not suggesting a set linear algebra stype functions, just sub-setting methods. (I think one goal here would be that if a sub-setting activity produces a 2D array result then it should get mapped to a MatrixToken type.) - OPeNDAP servers can perform server side sub-setting. It may be the most expedient thing would be to force the sub-setting to happen on the orgin server and only import 1D or 2D subsets into the ptolemy environment. You have readily available the following mechanisms for adding dimensions: - sequences (streams) - arrays (and arrays of arrays) - records Which to choose will depend on the modeling problem, I think. Note that a while ago, we did some major research into representations of multidimensional data via generalized streams (multidimensional streams). See: http://ptolemy.eecs.berkeley.edu/publications/papers/02/synchronous/ I followed this link to a page containing the abstract for the paper you mentioned. Unfortunately the link on that page to the full paper: http://ptolemy.eecs.berkeley.edu/publications/papers/02/synchronous/ MurthyLee_MultimensionalSDF.pdf Returns a 404 not found. Is there another location that you know of? I would interested in reading the document. Thanks you all for your thoughtful responses, Nathan This mechanism was implemented in Ptolemy Classic, but never ported to Ptolemy II. Probably some good research to be done here still... Edward At 07:57 PM 8/3/2007, Nathan Potter wrote: Greetings, I am looking at how I might represent an
ptII web site down?
Hey, I just noticed that the ptolemy.eecs.berkeley.edu web site seems to be down. Just thought I'd let someone know. chad Posted to the ptolemy-hackers mailing list. Please send administrative mail for this list to: [EMAIL PROTECTED]
Re: finding an effigy
Thanks, Edward! That worked. chad Edward A. Lee wrote: I think you probably need to create a DocEffigy and set it's container to be the container of the effigy for the model. Edward At 01:52 PM 6/5/2007, Chad Berkley wrote: Ok, I got a lot of wires redirected and finally got the PtolemyFrame to be referenced from the right click action handler. Now I can call getModel() which works fine. I can also call Configuration.findEffigy() which seems to work fine, except that it returns a PtolemyEffigy, not a DocEffigy which is what GetDocumentationAction wants. It looks like PtolemyEffigy and DocEffigy are not related to each other in the hierarchy (they both extend Effigy). I'm using the same calls that are used within GetDocumenationAction itself, but I get back a different type of Effigy. Any ideas why and how I can get a DocEffigy? Note that since there is nothing in the model at the time I call getModel() it returns a blank model, which seems like it should be fine. thanks, chad Edward A. Lee wrote: I'm sure it's possible, but I think it will a little indirect. In particular, the right click will have an event that can tell you what Frame delivered the event. This will be instance of PtolemyFrame, so you can cast it and call getModel(). Then call Configuration.findEffigy() on that model... Edward At 02:08 PM 6/4/2007, you wrote: Ok, that sounds good. Is there an easy method for getting the effigy of that workflow? When I do a Configuration.findEffigy(actor), it returns null. I'm not sure how to get a pointer to that open workflow from a random place in the code. thanks, chad Edward A. Lee wrote: I would suggest using the effigy for the model being viewed next to the library... The main purpose of this effigy is to give hierarchy to window managements, so that (for example), if you close a window, then all windows that are conceptually sub-windows close... Edward At 10:22 AM 6/4/2007, Chad Berkley wrote: Hi, I'm trying to make it possible to get the documentation for an actor from the actor library by right clicking on an actor. In the GetDocumentationAction class, it asks the Configuration for an Effigy for the object you are trying to open the documentation for. Since there is no effigy for an actor that is not yet part of a model, it fails. Is there a way for me to add a ghost effigy into the configuration so that the documentation can be created? thanks, chad Posted to the ptolemy-hackers mailing list. Please send administrative mail for this list to: [EMAIL PROTECTED] Edward A. Lee Chair of EECS and Robert S. Pepper Distinguished Professor 231 Cory Hall, UC Berkeley, Berkeley, CA 94720-1770 phone: 510-642-0253, fax: 510-642-2845 [EMAIL PROTECTED], http://ptolemy.eecs.berkeley.edu/~eal Edward A. Lee Chair of EECS and Robert S. Pepper Distinguished Professor 231 Cory Hall, UC Berkeley, Berkeley, CA 94720-1770 phone: 510-642-0253, fax: 510-642-2845 [EMAIL PROTECTED], http://ptolemy.eecs.berkeley.edu/~eal Edward A. Lee Chair of EECS and Robert S. Pepper Distinguished Professor 231 Cory Hall, UC Berkeley, Berkeley, CA 94720-1770 phone: 510-642-0253, fax: 510-642-2845 [EMAIL PROTECTED], http://ptolemy.eecs.berkeley.edu/~eal Posted to the ptolemy-hackers mailing list. Please send administrative mail for this list to: [EMAIL PROTECTED]
finding an effigy
Hi, I'm trying to make it possible to get the documentation for an actor from the actor library by right clicking on an actor. In the GetDocumentationAction class, it asks the Configuration for an Effigy for the object you are trying to open the documentation for. Since there is no effigy for an actor that is not yet part of a model, it fails. Is there a way for me to add a ghost effigy into the configuration so that the documentation can be created? thanks, chad Posted to the ptolemy-hackers mailing list. Please send administrative mail for this list to: [EMAIL PROTECTED]
Re: finding an effigy
Ok, that sounds good. Is there an easy method for getting the effigy of that workflow? When I do a Configuration.findEffigy(actor), it returns null. I'm not sure how to get a pointer to that open workflow from a random place in the code. thanks, chad Edward A. Lee wrote: I would suggest using the effigy for the model being viewed next to the library... The main purpose of this effigy is to give hierarchy to window managements, so that (for example), if you close a window, then all windows that are conceptually sub-windows close... Edward At 10:22 AM 6/4/2007, Chad Berkley wrote: Hi, I'm trying to make it possible to get the documentation for an actor from the actor library by right clicking on an actor. In the GetDocumentationAction class, it asks the Configuration for an Effigy for the object you are trying to open the documentation for. Since there is no effigy for an actor that is not yet part of a model, it fails. Is there a way for me to add a ghost effigy into the configuration so that the documentation can be created? thanks, chad Posted to the ptolemy-hackers mailing list. Please send administrative mail for this list to: [EMAIL PROTECTED] Edward A. Lee Chair of EECS and Robert S. Pepper Distinguished Professor 231 Cory Hall, UC Berkeley, Berkeley, CA 94720-1770 phone: 510-642-0253, fax: 510-642-2845 [EMAIL PROTECTED], http://ptolemy.eecs.berkeley.edu/~eal Posted to the ptolemy-hackers mailing list. Please send administrative mail for this list to: [EMAIL PROTECTED]
possible bug in DocManager.java
Hi, I've recently run across a ClassNotFoundException when trying to view the documentation for Sinewave in Kepler. I've traced it to DocManager.java where, in the method docClassNameToURL, there is a call to Class.forName(). The problem is that Sinewave is a moml class, not a java class so this fails. I'm not sure if the changes I put into the documentation system a few months ago might have caused this or if it is just a bug. Has anyone else (specifically those running ptii without kepler) had this problem? thanks, chad Posted to the ptolemy-hackers mailing list. Please send administrative mail for this list to: [EMAIL PROTECTED]
Re: possible bug in DocManager.java
Hi Chad,
Getting the documentation for Sinewave works in the devel version of
Ptolemy II built from CVS today.
However, it was printing a stacktrace about Sinewave not being found,
it looks like the See also was failing:
java.lang.ClassNotFoundException: ptolemy.actor.lib.Sinewave
at java.net.URLClassLoader$1.run(URLClassLoader.java:200)
at java.security.AccessController.doPrivileged(Native Method)
at java.net.URLClassLoader.findClass(URLClassLoader.java:188)
at java.lang.ClassLoader.loadClass(ClassLoader.java:306)
at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:268)
at java.lang.ClassLoader.loadClass(ClassLoader.java:251)
at java.lang.ClassLoader.loadClassInternal(ClassLoader.java:319)
at java.lang.Class.forName0(Native Method)
at java.lang.Class.forName(Class.java:164)
at ptolemy.vergil.actor.DocManager.docClassNameToURL(DocManager.java:438
)
at ptolemy.vergil.actor.DocManager.getSeeAlso(DocManager.java:799)
at ptolemy.vergil.actor.DocViewer._init(DocViewer.java:960)
at ptolemy.vergil.actor.DocViewer.init(DocViewer.java:114)
at ptolemy.vergil.actor.DocTableau.init(DocTableau.java:90)
at ptolemy.vergil.basic.GetDocumentationAction.showDocAttributeTableau(G
etDocumentationAction.java:364)
at
ptolemy.vergil.basic.GetDocumentationAction.actionPerformed(GetDocumentationAction.java:156)
at
javax.swing.AbstractButton.fireActionPerformed(AbstractButton.java:1849)
at
javax.swing.AbstractButton$Handler.actionPerformed(AbstractButton.java:2169)
at
javax.swing.DefaultButtonModel.fireActionPerformed(DefaultButtonModel.java:420)
at
javax.swing.DefaultButtonModel.setPressed(DefaultButtonModel.java:258)
at javax.swing.AbstractButton.doClick(AbstractButton.java:302)
at
javax.swing.plaf.basic.BasicMenuItemUI.doClick(BasicMenuItemUI.java:1000)
at
javax.swing.plaf.basic.BasicMenuItemUI$Handler.mouseReleased(BasicMenuItemUI.java:1041)
at java.awt.Component.processMouseEvent(Component.java:5501)
at javax.swing.JComponent.processMouseEvent(JComponent.java:3135)
at java.awt.Component.processEvent(Component.java:5266)
at java.awt.Container.processEvent(Container.java:1966)
at java.awt.Component.dispatchEventImpl(Component.java:3968)
at java.awt.Container.dispatchEventImpl(Container.java:2024)
at java.awt.Component.dispatchEvent(Component.java:3803)
at
java.awt.LightweightDispatcher.retargetMouseEvent(Container.java:4212)
at java.awt.LightweightDispatcher.processMouseEvent(Container.java:3892)
at java.awt.LightweightDispatcher.dispatchEvent(Container.java:3822)
at java.awt.Container.dispatchEventImpl(Container.java:2010)
at java.awt.Window.dispatchEventImpl(Window.java:1778)
at java.awt.Component.dispatchEvent(Component.java:3803)
at java.awt.EventQueue.dispatchEvent(EventQueue.java:463)
at
java.awt.EventDispatchThread.pumpOneEventForHierarchy(EventDispatchThread.java:242)
at
java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:163)
at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:157)
at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:149)
at java.awt.EventDispatchThread.run(EventDispatchThread.java:110)
I modified vergil/actor/DocManager.java so that we catch and ignore
the exception, which gets rid of the message.
DocManager is set up to print any stacktraces and then return null.
Perhaps it should be modified so that it does not try to look up the
Java class on an Actor Oriented class such as Sinewave, but I think
ignoring the exception is right, because the portion of getSeeAlso()
that is calling docClassNameToURL() and triggering printing the
exception is:
URL toRead = docClassNameToURL(_configuration, className, true,
true, true, false);
if (toRead != null) {
result.append(lia href=\ + toRead.toExternalForm()
+ \);
if (toRead.toExternalForm().endsWith(.html)) {
result.append(Javadoc Documentation);
} else if (toRead.toExternalForm().endsWith(.java)) {
result.append(Java Source);
} else if (toRead.toExternalForm().endsWith(.xml)) {
result.append(Class Documentation);
}
result.append(/a/li);
}
The Sinewave Actor Oriented class does not have Javadoc or Java
source, and it looks like we already have the Class Documentation, so
I think we are set.
Edward?
_Christopher
Hi,
I've recently run across a ClassNotFoundException when trying to view
the documentation for Sinewave in Kepler. I've traced it to
DocManager.java where, in the method
ptolemy text attribute question
Hi, I've been trying to figure out how to define an Attribute that allows the use of CDATA within the body of the property element. For instance: property name=documentation class=org.kepler.moml.DocumentationAttribute This is some docs... /property I don't see any current Attributes that will do this and upon looking at the MoMLParser code, it doesn't look like they can do this because the _handlePropertyElement() method is called before the charData() method gets called to handle the character data inside the element. This seems to limit the xml author to only including text inside the value attribute of the element. This would normally be fine, but I would like to include a lot of text. Maybe hundreds of lines. Putting the text into the value attribute doesn't lend itself to this very well. So, my question is, am I missing something and if not, would anyone object to me modifying the MoMLParser to be able to accept CDATA in leiu of the value attribute in a property element? thanks, chad Posted to the ptolemy-hackers mailing list. Please send administrative mail for this list to: [EMAIL PROTECTED]
Re: [kepler-dev] ptolemy text attribute question
There is ConfigurableAttribute. The plotter uses this for example to include foreign XML as a parameter value for the actor. To see it, put a SequentialPlotter actor in a model, change its formatting (by clicking on the format button in the plot), and look at the resulting XML. The fact that the plotter's CDATA is XML is irrelevant... It could be arbitrary text (almost). Edward At 01:18 PM 8/22/2005 -0700, Chad Berkley wrote: Hi, I've been trying to figure out how to define an Attribute that allows the use of CDATA within the body of the property element. For instance: property name=documentation class=org.kepler.moml.DocumentationAttribute This is some docs... /property I don't see any current Attributes that will do this and upon looking at the MoMLParser code, it doesn't look like they can do this because the _handlePropertyElement() method is called before the charData() method gets called to handle the character data inside the element. This seems to limit the xml author to only including text inside the value attribute of the element. This would normally be fine, but I would like to include a lot of text. Maybe hundreds of lines. Putting the text into the value attribute doesn't lend itself to this very well. So, my question is, am I missing something and if not, would anyone object to me modifying the MoMLParser to be able to accept CDATA in leiu of the value attribute in a property element? thanks, chad ___ Kepler-dev mailing list [EMAIL PROTECTED] http://mercury.nceas.ucsb.edu/ecoinformatics/mailman/listinfo/kepler-dev Edward A. Lee Professor, Chair of the EE Division, Associate Chair of EECS 231 Cory Hall, UC Berkeley, Berkeley, CA 94720 phone: 510-642-0253 or 510-642-0455, fax: 510-642-2845 [EMAIL PROTECTED], http://ptolemy.eecs.berkeley.edu/~eal Posted to the ptolemy-hackers mailing list. Please send administrative mail for this list to: [EMAIL PROTECTED]
Re: [Ptolemy] Re: Transparent CompositeActor firings?
At 02:25 PM 6/16/2004, Christopher Hylands Brooks wrote: The following appeared in comp.soft-sys.ptolemy. If you respond, please cc [EMAIL PROTECTED] -Christopher --- Forwarded Message From: Mark Hodson [EMAIL PROTECTED] Subject: Transparent CompositeActor firings? Date: Tue, 15 Jun 2004 00:05:18 +0930 G'day Ptolemy seers, Despite having read the Ptolemy documentation more than once, I am having trouble coming to grips with one particular aspect of Ptolemy's execution model (I am mostly interested in the DE domain); I wish to hierarchically compose a system, lets say for simplicity entirely in the DE domain. I thus wish a DE director to exist at the top level, and every other part of the hierarchy below this to be transparent, thus allowing that one director to resolve a correct ordering for each iteration of the world. The benefit of transparency here is of course that you get significant interleaving of firings of the deepest (leaf) children as necessary. eg. The world has two transponders, A and B. Each transponder has an Rx and a Tx. The correct firing order is A.Tx with B.Tx before A.Rx and B.Rx. You needed A and B to be transparent to get this behaviour. Given that in this scenario, A.Rx/A.Tx/B.Rx/B.Tx are the 4 AtomicActors, and A and B are CompositeActors, my question is; do A and B get fired in any way? If not, why not, and if so, in accordance with what rules (wrt the firing of their children, at least). Only opaque actors are fired. This includes all atomic actors and composite actors with a director. So, no, A and B will not get fired. Of course if A and B have nothing to do, then there is no drama, but if A and B carry some of the mathematics/behaviour of the model, then they will require some sort of firing opportunity. Then they should be opaque... Note that in DE, a composite actor is perfectly able to fire if only some of its inputs have events. It will fire the correct contained actors that receive those events and then return. A case in point is the wiring of CompositeActor A's children, which notionally I consider it responsible for. There are many cases in scientific computing when the first iteration of bringing the models up to time zero has a different wiring to subsequent iterations. I would wish A to perform this rewiring duty at the conclusion of that first iteration. Other similar behaviours might include timed or triggered introduction of additional children (perhaps A holds an input port that is not connected to any child components, but rather is used as a trigger to mutate the topology of A). Can you give me some conceptual guidance on how you see this sort of problem is best solved, in general terms and in the bounds of Ptolemy II? Yes, these are certainly interesting questions... We have recently begun experimenting with some of these issues and some tentative first steps are in the new 4.0 release. We have variously been calling them lifecycle actors or higher-order actors depending on the particular case. Higher-order components tend to populate themselves during initialization, while lifecycle actors tend to make more dynamic modifications during runtime. I would take a look at these to see if you get some ideas... Some of the key difficulties are ensuring that the model is in a consistent state when making modifications and ensuring that static analysis, which is sometimes necessary to ensure semantics of a model, is performed again. I would note that there is a distinct tradeoff between complex, unchanging architectures and simpler, changing architectures... It may be easier to do a little bit more upfront work by explicilty representing the different control flows in the model. Steve Posted to the ptolemy-hackers mailing list. Please send administrative mail for this list to: [EMAIL PROTECTED]
Re: introduction distributed ptolemy
There was a mail configuration problem with the ptolemy-hackers list, so I'm forwarding a couple of bounced messages. Rather than trying to merge them, I'm sending them in the order they were originally sent. -Christopher From: Ferdinando Villa [EMAIL PROTECTED] Reply-To: [EMAIL PROTECTED] To: Bertram Ludaescher [EMAIL PROTECTED] Cc: Edward A Lee [EMAIL PROTECTED], Tobin Fricke [EMAIL PROTECTED], [EMAIL PROTECTED], [EMAIL PROTECTED], yang [EMAIL PROTECTED], [EMAIL PROTECTED] In-Reply-To: [EMAIL PROTECTED] References: [EMAIL PROTECTED] [EMAIL PROTECTED] [EMAIL PROTECTED] Content-Type: text/plain Organization: University of Vermont Message-Id: [EMAIL PROTECTED] Mime-Version: 1.0 X-Mailer: Ximian Evolution 1.4.6 Date: Mon, 14 Jun 2004 11:25:19 -0400 Content-Transfer-Encoding: 7bit On Mon, 2004-06-14 at 11:01, Bertram Ludaescher wrote: Ideally the ports of an actor should (or at least could) have multiple types: - the data type (including say XML Schema type), - the semantic type (e.g. a concept expression describing more formally what else might be known about the data flowing through the port) [[aside for Ferdinando: our reductionist/separatist approach does not preclude forever an integrated modeling solution - it's just bottom up to get sth useful soon/in finite time ;-]] Hi Bertram! one point - if you read reductionistic (which I probably wrote somewhere) as reductive you're misinterpreting me - we ecologists mostly see reduct. vs. holistic as complementary (with hierarchical thinking as a possible integrating framework) so when we say reductionistic, we mean exactly what you also mean... one GOOD way to look at the problem, usually the most practical, easier to study, while often the least conducive to synthetic understanding... but NOT separatist Philosophy aside, here's a more SEEK-specific provocation: don't you think that the conceptual/holistic/top-down approach is the one that needs the semantic types, while the workflow/reductionist/ptolemy approach would be just fine with just the storage/machine types of whatever virtual machine AMS will be? Also: where do the transformations belong (scaling, units)? I'd argue they belong mechanically to the reductionistic side - just like all other actors, created to calculate a concept - and if the user don't need to see them, it's not because we hide them up in the conceptual description, but because they're actors in the workflow, and the conceptual description that users work with is not the workflow. Maybe we're mixing the sides up somewhat, and if so, is this ok... or is it going to postpone the beautiful moment of clarity when we all realize that we've all been thinking the same thing all along? Cheers, ferdinand - the event consumption/production type (useful for scheduling a la SDF) - the communication type (through the Ptolemy/Kepler client, directly via say FTP or HTTP) etc At some levels of modeling ones does explicitely hide such detail from the modeler/user but at other levels this might be a good way of overcoming some scalability issues (if you have terabyte data streams you want them to go directly where they need to) A related problem of web servies (as actors) is that they send results back to the caller (Kepler) and don't forward them to the subsequent actor making large data transfers virtually impossible.. A simple extension to the web service model (anyone knows whether that's already done???) would allow for data to include *references* so that a process would be able return to Kepler just a reference to the result data and that reference would be passed on to the consuming actor who then understands how to derefernce it. This simple extension seems to be an easy solution to what we called before the 3rd party transfer problem: --[Actor A] --- [ Actor B] -- ... To stream large data set D from A to B w/o going through Ptolemy/Kepler one can simply send instead a handle D and then B, upon receiving D, understands and dereferenes it by calling the appropriate protocol (FTP/gridFTP, HTTP, SRB,...) Note that there are already explicit Kepler actors (SRBread/SRBwrite, gridFTP) for large data transfer. More elegant would it be to just send handles in the form, e.g., dereference(http://...ref-to-D..) Note that the special tag 'derefence' is needed since not every URL should be dereferenced (a URL can be perfectly valid data all by itself) It would be good if we could (a) define our extensions in line with web services extensions that deal with dereferencing message parts (if such exists) and (b) can work on a joint Kepler/Ptolemy/Roadnet/SEEK/SDM etc approach (in fact, Kepler is such a joint forum for co-designing this together..) Bertram PS Tobin: I recently met Kent and heard good news about ORB access in Kepler
Support for resource allocation in Ptolemy?
Hi, hackers. We are using Ptolemy to do sytem-integration level simulation and testing for "smart" vehicles. Our main areas of interest are monitoring bandwidth of network connections and CPU utilization (although we are also modeling a number of other things). Is there a built-in actor that checks for resource (over-) allocation? I have thought about just using a summation of bandwidth, where the components in the system output an amount of bandwidth required at a given time and then a network simulation component sums these requirements and makes sure that the sum doesn't exceed the available. Is there a better way? Thanks for any advice you can give. -Steve -- Steve Rowe Research Engineer Cybernet (734) 668-2567 x 132
Re: modal models
The refinement for states in a ModalModel is in the same XML file as the ModalModel. Currently, the only way to spread a model across multiple XML files is using MoML class definitions or the ModelReference actor. Edward At 04:46 PM 6/3/2004 -0500, Reilly, Timothy (MN17) wrote: Dear Hackers, I wanted to try a simple fsm model model. After you put down your states and you want to add a refinement where do you put the xml file for the refinement so that it gets found ? As an example in the example in quick start fsm example there are two states clean and noisy that you can look inside. Were is noisy.xml ? When I am trying to do my own state machine where does the refinement graph go in terms of directory structure and whatever else needs to be done so that I can look inside and run it. I tried putting it in the same directory where the modal file is written but it does not get found. Thanks, Tim Posted to the ptolemy-hackers mailing list. Please send administrative mail for this list to: [EMAIL PROTECTED] Edward A. Lee, Professor 518 Cory Hall, UC Berkeley, Berkeley, CA 94720 phone: 510-642-0455, fax: 510-642-2739 [EMAIL PROTECTED], http://ptolemy.eecs.berkeley.edu/~eal Posted to the ptolemy-hackers mailing list. Please send administrative mail for this list to: [EMAIL PROTECTED]
Re: [Ptolemy] [Info] needed regarding execution under SDF model
Stephen Andrew Neuendorffer wrote: I'm a bit at a loss as to why it must execute N1 times? In seems to me like the N1 firings of HT1 and the N2 firings of HT2 could be hidden inside the actor, but without more information about where the desired number of firings is coming from, I couldn't hazard a guess as to the right way to represent it. The N1 firings of HT1 and the N2 firings of HT2 could be hidden inside I do agree with you, but I don't know how to proceed... In fact in our model, there are two levels : The first is the one I described in my last mail. Each HT (Hierarchical Task), contains the second level : When I take an input token, I cut it in N parts, I do a computation on each part. At the end I take the N results of the computation and I produce the result token. So I use N firings to do the N computations. I don't have the choice because I need to increment a counter in the firing method of the director. The director is an SDF director. I try to use the iterate method but i don't know how to use it properly. I can't use the preinitialize or initialize method because all the methods preinitialize or initialize of all the HT must be executed before a fire. I would like to call it between initialize and prefire. I think it's the best solution. But I do not know if it is possible ? Philippe Posted to the ptolemy-hackers mailing list. Please send administrative mail for this list to: [EMAIL PROTECTED]
Re: [Ptolemy] [Info] needed regarding execution under SDF model
At 05:53 AM 6/3/2004, Philippe.Dumont wrote: Stephen Andrew Neuendorffer wrote: I'm a bit at a loss as to why it must execute N1 times? In seems to me like the N1 firings of HT1 and the N2 firings of HT2 could be hidden inside the actor, but without more information about where the desired number of firings is coming from, I couldn't hazard a guess as to the right way to represent it. The N1 firings of HT1 and the N2 firings of HT2 could be hidden inside I do agree with you, but I don't know how to proceed... In fact in our model, there are two levels : The first is the one I described in my last mail. Each HT (Hierarchical Task), contains the second level : When I take an input token, I cut it in N parts, I do a computation on each part. At the end I take the N results of the computation and I produce the result token. So I use N firings to do the N computations. I don't have the choice because I need to increment a counter in the firing method of the director. OK, so I see two ways to approach this: 1) represent the extraction and composition of the N parts explicitly. 2) have it happen implicitly. I'm not sure what you are interested in: 1) is pretty straightforward (use an ArrayToSequence to extract the N tokens, send them through an actor, and then use a Downsampler to discard all but the last output) 2) I could picture doing a couple of ways, depending on how you are representing the primitive operation and what is important about it. The Director.transferInputs and transferOutputs methods could be overridden to do what you want to do. The primary downside to this is that you end up with an extra layer of hieararchy. The IterateOverArray actor (actor.lib.hoc) implements one way of hiding the extra hierarchy in the user interface. It overrides the director to behave as a ArrayToSequence, followed by an actor, followed by SequenceToArray It sounds like you want something similar, but with a DownSampler instead of a SequenceToArray. The director is an SDF director. I try to use the iterate method but i don't know how to use it properly. I can't use the preinitialize or initialize method because all the methods preinitialize or initialize of all the HT must be executed before a fire. I would like to call it between initialize and prefire. I think it's the best solution. But I do not know if it is possible ? I don't understand what you are trying to do here... Steve Posted to the ptolemy-hackers mailing list. Please send administrative mail for this list to: [EMAIL PROTECTED]
modal models
Dear Hackers, I wanted to try a simple fsm model model. After you put down your states and you want to add a refinement where do you put the xml file for the refinement so that it gets found ? As an example in the example in quick start fsm example there are two states clean and noisy that you can look inside. Were is noisy.xml ? When I am trying to do my own state machine where does the refinement graph go in terms of directory structure and whatever else needs to be done so that I can look inside and run it. I tried putting it in the same directory where the modal file is written but it does not get found. Thanks, Tim Posted to the ptolemy-hackers mailing list. Please send administrative mail for this list to: [EMAIL PROTECTED]
RE: [kepler-dev] question on typing processes and higher-order fu nctions a la map
Hi Edward Edwasrd Willink wrote Surely double -- double is just wrong. It uses the COSSAP fudge to support Arrays in a non-Array tool via accidental sequences. Any type system that requires exaplanatory text, (use N successive samples) is not a type system. Edward Lee wrote The only difference between: double -- double and A sequential array (distributed in time over sequential samples) with type T1[N] -- T2[N] is the N, which is what makes it a dependent type system... I don't think we got to the bottom of this, getting side tracked into axes of type lattices. If double -- double is the signature of an FFT, what is the output? Does the FFT fire after the first token to do an FFT1, then second to do FFT2, then 4 to do FFT4 etc, or after every 64 to do FFT64? Whichever; the output can only really be a stream of double (complex surely) for FFT1. I think there is a confusion between the computation firing signature double[64] - double[64] and the communication context which might indeed be double -- double The two are only compatible after a helpful type-inference system has inserted the conversions double -- double[64] and double[64] -- double (The implementation option of address/space/time distribution of the 64 elements remains open.) A helpful system may do this automatically, however a type-safe system must require user intervention to avoid accidental and undiagnosed interconnection of skewed frame boundaries. You agreed to my suggestion a couple of yeasrs ago that the Prolemy type system should have two modes: helpful/safe. If Ptolemy is to approach a consistent specification of behaviour rather than yet another set of intuitions, this conversion should not be automatic. When seen as a conversion, it ceases to be part of the FFT, just another part of the type system. It might even be that a smart code generator could exploit a stream optimised FFT implementation to weave the conversions into the computation, but that is a code generation/implementation issue that should only appear on the mapping of a Ptolemy diagram to a target platform. Regards Ed Willink E.D.Willink, Email: mailto:[EMAIL PROTECTED] Thales Research and Technology (UK) Ltd, Tel: +44 118 923 8278 (direct) Worton Drive,or +44 118 986 8601 (ext 8278) Worton Grange Business Park, Fax: +44 118 923 8399 Reading, RG2 0SB ENGLAND http://www.computing.surrey.ac.uk/personal/pg/E.Willink Posted to the ptolemy-hackers mailing list. Please send administrative mail for this list to: [EMAIL PROTECTED]
RE: [kepler-dev] question on typing processes and higher-order fu nctions a la map
Hi Edward, Bertram, Liying You have hit upon something that has bothered me for some time, and have expressed it better than I ever did... There are several examples of this tension in the Ptolemy II library. E.g., the FFT actor has type double -- double. Why isn't it [double] -- [double]? It could just as well be, and I don't know of any way to choose between these... Surely double -- double is just wrong. It uses the COSSAP fudge to support Arrays in a non-Array tool via accidental sequences. Any type system that requires exaplanatory text, (use N successive samples) is not a type system. For the proposed WDL, Waveform Description Language, (http://www.computing.surrey.ac.uk/personal/pg/E.Willink/wdl/wdl.html) I identified three distinct forms of array. A conventional array (distributed over adjacent memory addresses) A spatial array (distributed in space over a multi-port/multiple ports) A sequential array (distributed in time over sequential samples) (There is no limitation to 1D, provided the rasterising policy is well defined.) An FFT specification therefore is always T1[N} -- T2[N]. Particular specialisations may choose different forms of array distribution. Once these three forms are treated uniformly, it is also very easy to do automated conversions between them. For instance in Caltrop, each conversion would be just an 'assignment', with the distribution being an externally inferable property. In Ptolemy the multi-axis type lattice needed for fixed point must be extended with a further axis for the array-form lattice. Regards Ed Willink E.D.Willink, Email: mailto:[EMAIL PROTECTED] Thales Research and Technology (UK) Ltd, Tel: +44 118 923 8278 (direct) Worton Drive,or +44 118 986 8601 (ext 8278) Worton Grange Business Park, Fax: +44 118 923 8399 Reading, RG2 0SB ENGLAND http://www.computing.surrey.ac.uk/personal/pg/E.Willink Posted to the ptolemy-hackers mailing list. Please send administrative mail for this list to: [EMAIL PROTECTED]
RE: [kepler-dev] question on typing processes and higher-order fu nctions a la map
Hi Edward Unfortunately, I'm not well-versed in 'dependent type system's so I cannot comment on that. I don't doubt that a set of contradictory type constriants can be set up, but that's a detectable error, that can be made in a simpler system too. I see type inference as a multi-axis lattice problem, rather than the single axis approach of Ptolemy. Typical axes are: minimum value maximum value fixed-point epsilon floating-point epsilon overflow behaviour (a small enumeration) rounding behaviour (a small enumeration) overflow bit-truth (2-valued) rounding bit-truth (2-valued) is-complex each array dimension array form (a small enumeration) Each axis is orthogonal and therefore amenable to independent lattice or number line maximisation/minimisation as appropriate. Whereas in a single axis system valid solutions satisfy e.g a GE operator consistently, in a multi-axis system valid solutions must satisfy a GE operator on all axes. Perhaps the GT case on one axis, LT on another is what you mean by undecideable. With orthogonal axes it's just insoluble. I think that it may be the failure to move from single-axis in Ptolemy that may be creating a variety of problems. It was certainly the case that the Ptrolemy lattice had to double-up for Complex variants of all scalar types. My ptolemy.math.Quantization contribution makes some progress in this direction and allowed for independent treatment of some of the above axes. Ultimately the work stalled through lack of response to a number of emails. C++ (and I think Fortran) are examples of conventional languages where array dimensions can participate in the type checking. If this is not part of the type system then I'm not sure what you mean. Ultimately if 'dependent type system' does mean that dimensioned arrays are difficult, it just means that practical designs are difficult. We cannot run away from it. FFT frame sizes must be type-checked. Regards Ed Willink This is a nice idea, but doesn't this give you a dependent type system? This means type inference is undecidable in theory, and extremely complicated in practice... The only difference between: double -- double and A sequential array (distributed in time over sequential samples) with type T1[N] -- T2[N] is the N, which is what makes it a dependent type system... Lots of people have tried to put array sizes into type systems in conventional languages... It's no accident that none of them have it... Edward At 11:55 AM 5/26/2004 +0100, Willink, Ed wrote: Hi Edward, Bertram, Liying You have hit upon something that has bothered me for some time, and have expressed it better than I ever did... There are several examples of this tension in the Ptolemy II library. E.g., the FFT actor has type double -- double. Why isn't it [double] -- [double]? It could just as well be, and I don't know of any way to choose between these... Surely double -- double is just wrong. It uses the COSSAP fudge to support Arrays in a non-Array tool via accidental sequences. Any type system that requires exaplanatory text, (use N successive samples) is not a type system. For the proposed WDL, Waveform Description Language, (http://www.computing.surrey.ac.uk/personal/pg/E.Willink/wdl/ wdl.html) I identified three distinct forms of array. A conventional array (distributed over adjacent memory addresses) A spatial array (distributed in space over a multi-port/multiple ports) A sequential array (distributed in time over sequential samples) (There is no limitation to 1D, provided the rasterising policy is well defined.) An FFT specification therefore is always T1[N} -- T2[N]. Particular specialisations may choose different forms of array distribution. Once these three forms are treated uniformly, it is also very easy to do automated conversions between them. For instance in Caltrop, each conversion would be just an 'assignment', with the distribution being an externally inferable property. In Ptolemy the multi-axis type lattice needed for fixed point must be extended with a further axis for the array-form lattice. Regards Ed Willink E.D.Willink, Email: mailto:[EMAIL PROTECTED] Thales Research and Technology (UK) Ltd, Tel: +44 118 923 8278 (direct) Worton Drive,or +44 118 986 8601 (ext 8278) Worton Grange Business Park, Fax: +44 118 923 8399 Reading, RG2 0SB ENGLAND http://www.computing.surrey.ac.uk/personal/pg/E.Willink Edward A. Lee, Professor 518 Cory Hall, UC Berkeley, Berkeley, CA 94720 phone: 510-642-0455, fax: 510-642-2739 [EMAIL PROTECTED],
Constraints with assignment to parameters
Hello, we are three students from Aalborg University. We are using Ptolemy II for our study project. We encountered a few problems and would like to know if they are constraints of Ptolemy II or if we are just doing things in the wrong way. 1) In expression editor it is normal to assign a value to a variable. In an Expression actor we tried to assign a value to a parameter and it throws a parsing error. In FSM model, assigning to a parameter (set action) works correctly. 2) We decided to model a block of RAM as an array (FSM model). We put a parameter named RAM and assigned initial values as following: ([1:1:length]*0.0).toArray() We encountered a problem while assigning a value to a element of this array (set action RAM[c]=value, where c is a parameter with integer value). The expression says that it requires INTEGER instead of c. We would be really grateful if anyone could explain these problems Regards, Marija Posted to the ptolemy-hackers mailing list. Please send administrative mail for this list to: [EMAIL PROTECTED]
Re: Constraints with assignment to parameters
The expression language itself is not a programming language. It does not have statements (sequencing of operations) nor does not support assignments... It supports just expressions. The result of evaluating an expression is an immutable (unchangable) token. If the result is an array, you cannot modify the elements of the array. You would have to create a new array. FSM augments the expression language with assignments, but this makes sense because FSM has sequencing in its semantics. If what you really want is a scripting capability, I suggest using the Python actor. Then you have a full programming language accessible rather than just an expression language. You can also use Matlab as a scripting language using the MatlabExpression actor. Edward At 12:55 PM 5/21/2004 +0200, Marija Surnaite wrote: Hello, we are three students from Aalborg University. We are using Ptolemy II for our study project. We encountered a few problems and would like to know if they are constraints of Ptolemy II or if we are just doing things in the wrong way. 1) In expression editor it is normal to assign a value to a variable. In an Expression actor we tried to assign a value to a parameter and it throws a parsing error. In FSM model, assigning to a parameter (set action) works correctly. 2) We decided to model a block of RAM as an array (FSM model). We put a parameter named RAM and assigned initial values as following: ([1:1:length]*0.0).toArray() We encountered a problem while assigning a value to a element of this array (set action RAM[c]=value, where c is a parameter with integer value). The expression says that it requires INTEGER instead of c. Edward A. Lee, Professor 518 Cory Hall, UC Berkeley, Berkeley, CA 94720 phone: 510-642-0455, fax: 510-642-2739 [EMAIL PROTECTED], http://ptolemy.eecs.berkeley.edu/~eal Posted to the ptolemy-hackers mailing list. Please send administrative mail for this list to: [EMAIL PROTECTED]
Re: Ptolemy applets problems
Efrat Jaeger [EMAIL PROTECTED] writes: - I created the following applet, http://users.sdsc.edu/~efrat/workflows/queryPGAP.htm, very similar to the demo applets. Apparently it loads on some computers but on others I get a java.lang.NoClassDefFoundError: ptolemy/actor/gui/MoMLApplet error. On the same computers the existing demo applets load perfectly. I wasn't able to figure out what causes the exception. Does anyone have any suggestions? - Applets are notoriously tricky to get right. I looked over the source code and did not see anything obvious. There is some documentation at http://ptolemy.eecs.berkeley.edu/ptolemyII/ptIIlatest/ptII/doc/coding/applets.htm and there is a custom applet chapter in Volume 2 of the Ptolemy II design doc: http://ptolemy.eecs.berkeley.edu/papers/03/ptIIDesignSoftware The applet code you are using is the complex applet code that will work under Netscape 4.x. If you do not require support of Netscape 4.x, then you could use the much simpler applet .. /applet code. In fact, for debugging, I would use the simple applet code so that you are testing the same html code on the different platforms. Another trick is to look at the website logs and see what files are being downloaded. With Java 1.4.2, I noticed that if a class was loaded from a jar file, then it seemed like the applet class loader would not find individual .class files on the file system. The solution was to make sure and have the archive= tag include jar files that included all the .class files. I'm not sure about the details of this new behaviour, I poked around on the Sun website but did not see anything. When I tried to run your applet, I had to install Java 1.4.1_02, the applet would not run with Java 1.5.0-beta under Mozilla. Applets can have dynamic versioning or static versioning. Dynamic versioning permits a JRE greater or equal to a a certain version to be used. Static versioning requires that a certain version of JRE be used. The details are covered in: http://java.sun.com/products/plugin/versions.html From the title tag, it looks like your applet is based on one of the Ptolemy Eye applets. It looks like your applet and the Ptolemy II 3.0 SDF Eye applet are using dynamic versioning under IE, but static versioning under Mozilla? This would be a bug. The IE section says: classid=clsid:8AD9C840-044E-11D1-B3E9-00805F499D93 which http://java.sun.com/products/plugin/versions.html indicates is for dynamic versioning. The Netscape section says: application/x-java-applet;jpi-version=1.4.1_02 http://java.sun.com/products/plugin/versions.html indicates is for static versioning. The applet code shipped in Ptolemy II 3.0 in theory uses static version to restrict the version of the JVM can be used to 1.4.1_02. This was done because of a bug in 1.4.1 and 1.4.1_01 that machines that use a particular video chip set to hang. Since Professor Lee and I were affected by this bug, we restricted the JVM choice to 1.4.1_02. I tried to make the applet use dynamic versioning for Netscape so we would accept 1.4.1_02 or greater, but could not get this to work, it appeared to be a problem with the patch level. If possible, it is better to use dynamic versioning. The Ptolemy II 4.0 applets use dynamic versioning correctly to require Java 1.4.2 or later. In principle, Java 1.5.0-beta should work with these applets. In general, applets have restrictions: 1) Don't use the readFile() expression function in a model that is within an applet. This is because of restrictions in the applet class loader. 2) If possible, use the simple applet .../applet code and avoid the really complex javascript code. If you really think you need to support Netscape 4.x, consider looking at the web server logs for the number of Netscape 4.x users and evaluate the cost of supporting applets for those users. Note that Ptolemy II 4.0 supports Netscape 4.x. Perhaps the next release of Ptolemy II applets will not support Netscape 4.x? 3) The MoMLViewerApplet class does not permit look inside. It would be cool if we could use the Single Window interface created by Thales within an applet. To run the single window interface in Ptolemy II 4.0, do $PTII/bin/vergil -single The idea would be to create an applet that would use this interface 4) The code generator will generate applets for a model. See $PTII/doc/codegen.htm for somewhat out of date documentation. There will be a chapter in the design doc about how to use the applet generator. 5) For vergil applets, it might be better to create Web Start versions. I noticed that the Java Event Listener Tutorial is now using Web Start, see http://java.sun.com/docs/books/tutorial/uiswing/events/example-1dot4/ I started hacking up the applet code generator to generate both applets and Web Start configurations, but I never really finished that work BTW - If you use the controls parameter in your applet, then users can run the applet. To do this,
Ptolemy applets problems
Hi, I created the following applet, http://users.sdsc.edu/~efrat/workflows/queryPGAP.htm,verysimilar to the demo applets. Apparently it loads on some computers but on others I get a "java.lang.NoClassDefFoundError: ptolemy/actor/gui/MoMLApplet" error. On the same computers the existing demo applets load perfectly. I wasn't able to figure out what causes the exception. Does anyone have any suggestions? Thanks, Efrat
Ptolemy II 4.0-beta is available for download
Ptolemy II 4.0-beta is available for download. Changed between 4.0-alpha and 4.0-beta: Feature enhancements * IterateOverArray usability features: Look inside now skips a level to show the model that actually gets iterated rather than the intermediate level. Also, IterateComposite can be dropped on IterateOverArray, and changes to its ports either inside or outside will be reflected in the IterateOverArray actor. * Gave a more reasonable title to window used to edit custom icons. Bug Fixes * Fixed bug that didn't allow changing the name of graphical attributes when there were subclasses. * Fixed potential deadlock in simultaneous accesses to a CrossReferenceList. * If change requests are queued in a top-level entity and then its container is set, the change requests were never executed. Now, they are transferred to the new container. * If a change request is made during cloning of an object, then the change request was executed immediately even if deferChangeRequests(true) has been called on object being cloned. This is because during cloning, the cloned object has no container. Now, the clone() method of NamedObj ensures that every cloned object has deferChangeRequests(true) set before it starts to get populated with its contents. This means that callers to clone() need to set it back to false if this is what they want. * Improved performance of models that animate execution by changing parameters of icons (removed spurious acquisition of write permission on the Workspace). * StyleConfigurer was directly making kernel calls rather than issuing change requests to apply changes. This could result in exceptions if a style is changed while a model is running, and it also means that changes to a style are not propagated to subclasses and instances. * Fixed bug where deleting class definitions and subclasses or instances would throw a spurious exception because it would try to delete the subclasses or instances twice. * Fixed bug where editing the custom icon of a class definition did not propagate to instances and subclasses until the model was closed and reopened. * Fixed bug where dropping an actor into a model, followed by undo left the icon in the model (but without any associated actor) until the model was closed and re-opened. * Removed a leak in diva.graph.AbstractGraphController where figures that are no longer being used by the model were still stored in a private hash table. * Fixed a bug with TerrainModel in the wireless domain where the geometry that was used for determining terrain obstacles didn't match the geometry displayed in the icon. * StyleConfigurer was directly making kernel calls rather than issuing change requests to apply changes. This could result in exceptions if a style is changed while a model is running, and it also means that changes to a style are not propagated to subclasses and instances. * Many uses of the _hideName attribute were Parameter or Attribute rather than SingletonAttribute. Changed to consistently be SingletonAttribute. * Configure now handles causes where the Java Advanced Imaging (JAI) interface is in a location outside of the JRE * Configure now sets up $PTII/.classpath properly for use by Eclipse * Broken HTML links have been fixed. Below is an update of the announcement I sent out with Ptolemy II 4.0-alpha. ---start-- VisualSense-4.0-beta is also available as part of the download. VisualSense is a visual editor and simulator for wireless sensor network systems. Modeling of wireless sensor networks requires sophisticated modeling of communication channels, sensor channels, ad-hoc networking protocols, localization strategies, media access control protocols, energy consumption in sensor nodes, etc. VisualSense is designed to support a component-based construction of such models. VisualSense is intended to enable the research community to share models of disjoint aspects of the sensor nets problem and to build models that include sophisticated elements from several aspects. The VisualSense documentation can be found at http://ptolemy.eecs.berkeley.edu/papers/04/VisualSenseERLMemo0408/VisualSenseERLMemo0408.pdf Eventually, we will have a separate VisualSense only Windows installer. In this release, under Windows, to install VisualSense, install the full version of Ptolemy II and select Vergil - VisualSense from the Start menu. If you rebuild from source, then to start up VisualSense, run vergil -visualsense New Features Major Features that are new in Ptolemy II 4.0 * Modeling wireless sensor networks (VisualSense) The wireless domain extends the DE domain with wireless channel modeling and library of components and methodologies for modeling wireless systems. This domain is packaged in a Ptolemy II configuration called VisualSense, which includes an extensive suite of demos. *
A customized ptolemy for bioinformatic
Hi all, perhaps someone could give me some advice or remarks on the application based on Ptolemy and Vergil I need to develop. 1 - This application will execute bioinformatics workflows designed from a graphical interface (a customized vergil). For a main part the actors are external applications a user can easily add to his workspace without programming (I need to develop an actor which acts as a wrapper). 2 - The workflow must be able to run these applications concurrently : I think of using a customized PN director which executes the workflow only one time. 3 - I need to be able to run several instances of one model. For example after creating a model which analyze DNA sequences, I launch several instances concurrently with different parameters and then compare the results between the instances. 4 - As the external applications can be very long (several days), I would like to be able to a design the workflow, launch ptolemy in background (without graphical interface) and retrieve at any moment the current state from a graphical interface used as a viewer. I have already made a little prototype which launches external applications and displays the state of each. I've tried with a PN director to try the concurrent executions but it seems to do an infinite loop (I'm currently reading the doc and I think my comprehension of behaviours is not perfect yet !) I think the point 4 is the most délicate but I'm rather confident as ptolemy and vergil communicates using event messages. It seems I don't need to break all the architecture ! Do you think my features are reasonable ? ;) Sorry if some answers are in the doc, I'm currently reading it too ! Franck Posted to the ptolemy-hackers mailing list. Please send administrative mail for this list to: [EMAIL PROTECTED]
NullPointerException in 4.0alpha initialize
[I previously posted this to the newsgroup, but it didn't make it to the mailing list ...] I'm trying to initialize and run a Ptolemy model generated by XSLT from an existing XML description of an experiment (not a MoML file). When I try to run the model, I get the error: java.lang.NullPointerException at ptolemy.actor.CompositeActor.initialize(CompositeActor.java:437) at ptolemy.domains.de.kernel.DEDirector.initialize(DEDirector.java:721) at ptolemy.actor.CompositeActor.initialize(CompositeActor.java:464) at ptolemy.actor.Manager.initialize(Manager.java:420) at ptolemy.actor.Manager.execute(Manager.java:277) at ptolemy.actor.Manager.run(Manager.java:831) at ptolemy.actor.Manager$1.run(Manager.java:880) I suspect the error lies in my generated XML code, and not in Ptolemy, but I'm having trouble tracking it down. (The generated code includes several Ptolemy actors that execute okay outside of the model, so it's most likely an integration bug.) What sorts of errors in the MoML file might cause this exception? ALZ - Andrew Zimdars Modeling, Simulation, and Information Sciences (Org. ABCS) Advanced Technology Center, Lockheed Martin Space Systems Co. Bldg. 153, Col. 2J4 Lockheed Martin Way, Sunnyvale, CA 94089 w: 408.742.2111 m: 510.915.0662 Posted to the ptolemy-hackers mailing list. Please send administrative mail for this list to: [EMAIL PROTECTED]
Re: NullPointerException in 4.0alpha initialize
Looks like receivers are not getting created for one of the actors, which shouldn't happen. It would be helpful to get the generated MoML file, along with any custom java actors you are using... Steve At 11:23 AM 5/13/2004, Zimdars, Andrew wrote: [I previously posted this to the newsgroup, but it didn't make it to the mailing list ...] I'm trying to initialize and run a Ptolemy model generated by XSLT from an existing XML description of an experiment (not a MoML file). When I try to run the model, I get the error: java.lang.NullPointerException at ptolemy.actor.CompositeActor.initialize(CompositeActor.java:437) at ptolemy.domains.de.kernel.DEDirector.initialize(DEDirector.java:721) at ptolemy.actor.CompositeActor.initialize(CompositeActor.java:464) at ptolemy.actor.Manager.initialize(Manager.java:420) at ptolemy.actor.Manager.execute(Manager.java:277) at ptolemy.actor.Manager.run(Manager.java:831) at ptolemy.actor.Manager$1.run(Manager.java:880) I suspect the error lies in my generated XML code, and not in Ptolemy, but I'm having trouble tracking it down. (The generated code includes several Ptolemy actors that execute okay outside of the model, so it's most likely an integration bug.) What sorts of errors in the MoML file might cause this exception? ALZ - Andrew Zimdars Modeling, Simulation, and Information Sciences (Org. ABCS) Advanced Technology Center, Lockheed Martin Space Systems Co. Bldg. 153, Col. 2J4 Lockheed Martin Way, Sunnyvale, CA 94089 w: 408.742.2111 m: 510.915.0662 Posted to the ptolemy-hackers mailing list. Please send administrative mail for this list to: [EMAIL PROTECTED] Posted to the ptolemy-hackers mailing list. Please send administrative mail for this list to: [EMAIL PROTECTED]
Re: I am using ptolemy II to develop an optical network simulator.
In comp.soft-sys.ptolemy, [EMAIL PROTECTED] (Kaizen) writes: This is for an academic project so the complexity of the simulator will not reach that of something commercial like Optiwave or VPI. VPI and Ptolemy Classic have a connection, http://ptolemy.eecs.berkeley.edu/conferences/99/opticalsystems.pdf Says VPI products comprise: *Photonic Transmission Design Suite (PTDS) based on Ptolemy 0.7 . . . The components that I am simulating include the transmitter, the fiber and the receiver. In the transmitter which I am working on now, there is a PRBS that goes thru a NRZ and that signal is modulated with that of a DFB laser. I don't know much about optical systems, so the above are just TLAs to me :-) What kind of domain should I be simulating this in, Hard to say. Usually network simulators use a timed domain, such as DE. However, it can be tricky to create large efficient DE models - it is hard to get the level of abstraction right. Someone else might have a suggestion I am currently doing it in SDF, but so far the entire simulation just slows down a lot when I leave it running for a while. 1. Make sure you are not using the Display actor, it eats up memory. 2. Try monitoring your memory usage. Is the java process consuming lots of memory? 3. There are some notes at $PTII/doc/coding/performance.htm, which is at http://ptolemy.eecs.berkeley.edu/ptolemyII/ptII4.0/ptII4.0-beta/doc/coding/performance.htm ( I see that the file has a .html bug which I will fix shortly) 4. Using a commercial tool like JProbe can help. They have a free trial. -Christopher Posted to the ptolemy-hackers mailing list. Please send administrative mail for this list to: [EMAIL PROTECTED]
possible application
Dear Hackers, I am new to Ptolemy. I am intrigued by Ptolemy particularly because if is freely available and I can use it both personally and at work. I would like to simulate a radar system with it. I am having a little trouble deciding which domain to use. What I am would like to do is set up is some sort of a system with a master clock that fires the transmitter, and delays to simulate ground returns and system timings that will all be off of a master clock. There will be digital track loops who will all be synchronous with this clock. I there a good domain to accomplish this ? I am having a little trouble figuring out how to do to system timing. I long for a way to have stuff happen on clock edges as an event. Also, I have access to matlab/simulink but I am a mathcad user, so I am kind of the decision point as to what I should invest my time in learning. I also have access to vissim which came with my last Mathcad. Will Ptolemy be around for a while and be supported ? Does it compare well with these other tools ? I know this is like asking a politician who I should vote for but anyway... Also I tried to get into the ftp site to look up the archives but didn't get in. I tried ftp://www.pub/ptolemy/mailing-lists/ptolemy-hackers.archive in my browser but this didn't work. Please forgive these questions, I know they probably sound trivial to you all. Regards, Tim Posted to the ptolemy-hackers mailing list. Please send administrative mail for this list to: [EMAIL PROTECTED]
Re: Compiling Ptolemy with Eclipse
Thanks for your help, I also tried the method described but I can not get the project compiled, here is what I tried : tar xfz ptII3.0.2.src.tar.gz mv ptII3.0.2 ptII export PTII=/home/franck/bin/my_PTII/ptII cd $PTII ./configure cd ~/bin/my_PTII eclipse File-New Project Project Name : ptII Directory: /home/franck/bin/my_PTII Finish -- An error occured while creating the java project Reason : invalid project description /home/franck/bin/my_PTII and /home/franck/bin/my_PTII/workspace overlap If I change the directory with : /home/franck/bin/my_PTII/ptII -- An error occurred while creating the java project See error log for more details. (java.lang.NullPointerException in the .log of Eclipse !) I tried other thinks but I can only compile and run (make fast install) without Eclipse ! Franck On Mon, 2004-05-03 at 17:14, Christopher Hylands Brooks wrote: With Eclipse, usually it is necessary to run configure so that the .classpath file is properly set up. An alternative is to set up the project class path by hand. Locally, our Eclipse users run configure, so the by hand section of the doc could probably use some testing and updating. One issue is that Ptolemy II includes many packages that use other external packages that might not be present, so setting the classpath and excluding packages by hand can be time consuming. -Christopher Good morning, I'm a software designer in the Pasteur Institute (Paris) and I'm involved with a workflow definition and conception for sequence analysis (mainly). Ptolemy II seems to correspond to the core functionalities I need and seems to be easy to customize (thanks to have made docs and UML diagrams !) Unfortunatly I'm trying to make an eclipse project following the instructions described but without success. I'm now trying to install Ptolemy by hand following the chapter Setting up for Ptolemy II By Hand described in doc/coding/eclipse.htm and I have these errors : 1 - The project was not built since its classpath is incomplete. Cannot find the class file for ptolemy.math.Complex. Fix the classpath then try rebuilding this project. 2 - For the file /ptolemy/matlab/test/TestEngine.java : This compilation unit indirectly references the missing type ptolemy.math.Complex (typically some required class file is referencing a type outside the classpath) (Weird because I can see ptolemy.math in Eclipse) Can you say me if there is a mistake in the procedure described or I made something wrong. Thanks a lot ! Regards Franck Valentin --- - Posted to the ptolemy-hackers mailing list. Please send administrative mail for this list to: [EMAIL PROTECTED] Posted to the ptolemy-hackers mailing list. Please send administrative mail for this list to: [EMAIL PROTECTED] Posted to the ptolemy-hackers mailing list. Please send administrative mail for this list to: [EMAIL PROTECTED]
Re: Compiling Ptolemy with Eclipse
Hmm, this sounds like an Eclipse bug tickled by Ptolemy adjusting
setting up the ptII/.classpath file.
I've seen stack traces inside eclipse 2.1.2. Rather than
reinstalling, what I usually what I ended up doing was removing my
eclipse/workspace directory and trying various things.
You could try removing ptII/.classpath and seeing if the setup
completes. That worked for me.
I was able to build after hacking adding the following to .classpath.in:
classpathentry excluding=cm/ kind=src path=ptolemy/copernicus/c/test/
and I had to add
ptolemy/copernicus/c/test/cm/|
to the list of excluded files.
At one point, the Java build path window came up and I had
to remove jmf.jar and sound.jar
I later removed the jxta jar files because they had this
bogus ${PTII} inside of them. I'll fix configure momentarily.
This bug occurred because our devel tree contains the jxta jar files,
but we don't ship these jar files.
To remove the jxta jar files, right click on the ptII project, select
Properties - Java Build Path - Libraries
You may later want to exclude ptolemy/moml/jxta from the build.
Below is a copy of the .classpath.in that worked for me:
--start--
?xml version=1.0 encoding=UTF-8?
classpath
classpathentry excluding=cm/ kind=src path=ptolemy/copernicus/c/test/
classpathentry
excluding=**/CVS/|**/codeDoc/|config/|doc/coding/templates/|ptolemy/apps/agilent/|ptolemy/apps/anytimecontrol/|ptolemy/apps/charon/|ptolemy/apps/crazyboard/|ptolemy/apps/etherealSting/|ptolemy/apps/fullscreen/|ptolemy/apps/giotto/|ptolemy/apps/ia/|ptolemy/apps/kurt/|ptolemy/apps/jmf/|ptolemy/apps/kvm/|ptolemy/apps/lego/|ptolemy/apps/lejos/|ptolemy/apps/midp/|ptolemy/apps/mobileCoding/|ptolemy/apps/pendulum/|ptolemy/apps/rijndael/|ptolemy/apps/robot/|ptolemy/apps/security/|ptolemy/apps/sobel/|ptolemy/apps/softwalls/|ptolemy/apps/soot/|ptolemy/apps/throttle/|ptolemy/apps/tini/|ptolemy/apps/transmission/|ptolemy/apps/vergil/|ptolemy/apps/waba/|ptolemy/apps/webstart/|ptolemy/apps/xsl/|ptolemy/copernicus/c/test/|ptolemy/copernicus/c/test/cm/|ptolemy/domains/ct/demo/Saber/|ptolemy/domains/gr/lib/experimental/|ptolemy/domains/pdf/|ptolemy/plot/servlet/|vendors/@ECLIPSE_EXCLUDING_SRC@
kind=src path=/
classpathentry kind=con path=org.eclipse.jdt.launching.JRE_CONTAINER/
@ECLIPSE_CLASSPATHENTRY_LIBS@
classpathentry kind=output path=/
/classpath
--end--
I'll add a note to the website about this
-Christopher
Thanks for your help, I also tried the method described but I can not
get the project compiled, here is what I tried :
tar xfz ptII3.0.2.src.tar.gz
mv ptII3.0.2 ptII
export PTII=/home/franck/bin/my_PTII/ptII
cd $PTII
./configure
cd ~/bin/my_PTII
eclipse
File-New Project
Project Name : ptII
Directory: /home/franck/bin/my_PTII
Finish
-- An error occured while creating the java project
Reason : invalid project description
/home/franck/bin/my_PTII and /home/franck/bin/my_PTII/workspace overlap
If I change the directory with : /home/franck/bin/my_PTII/ptII
-- An error occurred while creating the java project
See error log for more details.
(java.lang.NullPointerException in the .log of Eclipse !)
I tried other thinks but I can only compile and run (make fast install)
without Eclipse !
Franck
On Mon, 2004-05-03 at 17:14, Christopher Hylands Brooks wrote:
With Eclipse, usually it is necessary to run configure so that the
.classpath file is properly set up. An alternative is to set up the
project class path by hand. Locally, our Eclipse users run configure,
so the by hand section of the doc could probably use some testing
and updating.
One issue is that Ptolemy II includes many packages that
use other external packages that might not be present, so setting the
classpath and excluding packages by hand can be time consuming.
-Christopher
Good morning,
I'm a software designer in the Pasteur Institute (Paris) and I'm
involved with a workflow definition and conception for sequence analy
sis
(mainly). Ptolemy II seems to correspond to the core functionalities
I
need and seems to be easy to customize (thanks to have made docs and
UML
diagrams !)
Unfortunatly I'm trying to make an eclipse project following the
instructions described but without success.
I'm now trying to install Ptolemy by hand following the chapter
Setting up for Ptolemy II By Hand described in doc/coding/eclipse.h
tm
and I have these errors :
1 - The project was not built since its classpath is incomplete. Cann
ot
find the class file for ptolemy.math.Complex.
Compiling Ptolemy with Eclipse
Good morning, I'm a software designer in the Pasteur Institute (Paris) and I'm involved with a workflow definition and conception for sequence analysis (mainly). Ptolemy II seems to correspond to the core functionalities I need and seems to be easy to customize (thanks to have made docs and UML diagrams !) Unfortunatly I'm trying to make an eclipse project following the instructions described but without success. I'm now trying to install Ptolemy by hand following the chapter Setting up for Ptolemy II By Hand described in doc/coding/eclipse.htm and I have these errors : 1 - The project was not built since its classpath is incomplete. Cannot find the class file for ptolemy.math.Complex. Fix the classpath then try rebuilding this project. 2 - For the file /ptolemy/matlab/test/TestEngine.java : This compilation unit indirectly references the missing type ptolemy.math.Complex (typically some required class file is referencing a type outside the classpath) (Weird because I can see ptolemy.math in Eclipse) Can you say me if there is a mistake in the procedure described or I made something wrong. Thanks a lot ! Regards Franck Valentin Posted to the ptolemy-hackers mailing list. Please send administrative mail for this list to: [EMAIL PROTECTED]
Re: Compiling Ptolemy with Eclipse
Hi Franck: fyi: you may also be interested in the following Ptolemy II spin-off called Kepler that has been used for bioinformatics and other scientific workflows: http://kepler.ecoinformatics.org The first official Kepler release is planned for later this month, but the code is available already (and earlier pre-releases). There is also a page contributed by one of the Kepler folks to using Eclipse: http://kepler.ecoinformatics.org/eclipse.html Bertram FV == Franck Valentin [EMAIL PROTECTED] writes: FV FV Good morning, FV I'm a software designer in the Pasteur Institute (Paris) and I'm FV involved with a workflow definition and conception for sequence analysis FV (mainly). Ptolemy II seems to correspond to the core functionalities I FV need and seems to be easy to customize (thanks to have made docs and UML FV diagrams !) FV FV Unfortunatly I'm trying to make an eclipse project following the FV instructions described but without success. FV FV I'm now trying to install Ptolemy by hand following the chapter FV Setting up for Ptolemy II By Hand described in doc/coding/eclipse.htm FV and I have these errors : FV FV 1 - The project was not built since its classpath is incomplete. Cannot FV find the class file for ptolemy.math.Complex. Fix the classpath then try FV rebuilding this project. FV FV 2 - For the file /ptolemy/matlab/test/TestEngine.java : FV This compilation unit indirectly references the missing type FV ptolemy.math.Complex (typically some required class file is referencing FV a type outside the classpath) FV FV (Weird because I can see ptolemy.math in Eclipse) FV Can you say me if there is a mistake in the procedure described or I FV made something wrong. FV FV Thanks a lot ! FV FV FV FV Regards FV FV Franck Valentin FV FV FV FV Posted to the ptolemy-hackers mailing list. Please send administrative FV mail for this list to: [EMAIL PROTECTED] Posted to the ptolemy-hackers mailing list. Please send administrative mail for this list to: [EMAIL PROTECTED]
Re: Compiling Ptolemy with Eclipse
With Eclipse, usually it is necessary to run configure so that the .classpath file is properly set up. An alternative is to set up the project class path by hand. Locally, our Eclipse users run configure, so the by hand section of the doc could probably use some testing and updating. One issue is that Ptolemy II includes many packages that use other external packages that might not be present, so setting the classpath and excluding packages by hand can be time consuming. -Christopher Good morning, I'm a software designer in the Pasteur Institute (Paris) and I'm involved with a workflow definition and conception for sequence analysis (mainly). Ptolemy II seems to correspond to the core functionalities I need and seems to be easy to customize (thanks to have made docs and UML diagrams !) Unfortunatly I'm trying to make an eclipse project following the instructions described but without success. I'm now trying to install Ptolemy by hand following the chapter Setting up for Ptolemy II By Hand described in doc/coding/eclipse.htm and I have these errors : 1 - The project was not built since its classpath is incomplete. Cannot find the class file for ptolemy.math.Complex. Fix the classpath then try rebuilding this project. 2 - For the file /ptolemy/matlab/test/TestEngine.java : This compilation unit indirectly references the missing type ptolemy.math.Complex (typically some required class file is referencing a type outside the classpath) (Weird because I can see ptolemy.math in Eclipse) Can you say me if there is a mistake in the procedure described or I made something wrong. Thanks a lot ! Regards Franck Valentin --- - Posted to the ptolemy-hackers mailing list. Please send administrative mail for this list to: [EMAIL PROTECTED] Posted to the ptolemy-hackers mailing list. Please send administrative mail for this list to: [EMAIL PROTECTED]
Re: ANNOUNCE: galsC 0.1.0 (alpha) release
Elaine Cheong and Jie Liu announced availability of galsC 0.1.0 (alpha) -Christopher --- Forwarded Message Subject: [Ptolemy] ANNOUNCE: galsC 0.1.0 (alpha) release Date: Sun, 25 Apr 2004 16:18:30 -0700 (PDT) We are announcing the alpha release of galsC, a language and compiler for use with the TinyGALS programming model, which uses TinyOS as the underlying component model. galsC is compatible with TinyOS 1.x and nesC 1.1.1. You can use the galsC compiler to compile all your existing TinyOS programs. TinyGALS is a globally asynchronous, locally synchronous model for programming event-driven embedded systems, especially sensor networks. At the local level, software components communicate with each other synchronously via method calls. Components are composed to form actors. At the global level, actors communicate with each other asynchronously via message passing, which separates the flow of control between actors. A complementary model called TinyGUYS is a guarded yet synchronous model designed to allow thread-safe sharing of global state between actors without explicitly passing messages. The TinyGALS programming model is structured such that code for all inter-actor communication, actor triggering mechanisms, and access to guarded global variables can be automatically generated from a high level specification. By raising concurrency concerns above the level of TinyOS components, the TinyGALS programming model allows programmers to focus on the main tasks that the application must execute. Programs developed using this task-oriented model are thread safe and easy to debug. For more information and download instructions, please see: http://galsc.sourceforge.net/ To receive future announcements about galsC, please sign up here: http://lists.sourceforge.net/lists/listinfo/galsc-announce Please visit us at IPSN'04 (Berkeley, California, April 26-27, 2004): http://ipsn04.cs.uiuc.edu/ --- End of Forwarded Message Posted to the ptolemy-hackers mailing list. Please send administrative mail for this list to: [EMAIL PROTECTED]
Re: Reading a file from Matlab
In comp.soft-sys.ptolemy, [EMAIL PROTECTED] (Renooj Jacob) writes: I have a script file in matlab which solves a series of equations. I would like to access this matlab file from ptolemy and plot within ptolemy using the matlab expression. Is it possible? If not is there any other way. I'm not sure what the format of the script file is. You could read from the file using ExpressionReader, FileReader or LineReader and then you could use the String actors to process the data, though you might find it easier to create a custom actor to do custom plotting. You could then call the Matlab Expression actor to plot the data. Also i have a function file in matlab. i want to execute it from ptolemy. How to do that? I don't know much about Matlab, but I did create a simple test that reads in a function from a .m file. Is a function file a .m fle? Under Windows, running cd $PTII ptolemy/matlab/test $PTII/bin/vergil mFileTest.xml will bring up a model that reads mFileTest.m that defines a simple file. The model annotation says: This test uses a function defined in an m-file called mFileTest.m. The packageDirectories parameter of the MatlabExpression actor is set to include $PTII/ptolemy/matlab/test in the directories that are searched by Matlab. The _debugging parameter is set to 2 so that debugging output will appear on standard out. I also created a simple wireless model that uses a .m file at $PTII/ptolemy/domains/wireless/demo/MatlabWirelessSoundDetection/ Note that at this time you cannot use .m files with pure jar file based installers like Web Start. We could hack something up that would get the .m file from a jar file and copy it to a directory and add that directory to the packageDirectories parameter of the model. Also, it appears that gcc-5.3 has problems running the Matlab interface. Use gcc-5.2 instead Regards Renooj -Christopher Posted to the ptolemy-hackers mailing list. Please send administrative mail for this list to: [EMAIL PROTECTED]
Re: FOR LOOP
[EMAIL PROTECTED] (Renooj Jacob) writes: 1) How does one implement FOR LOOP in Ptolemy. There was a little bit of discussion about this in November. Searching google with: switch group:comp.soft-sys.ptolemy yields this post in comp.soft-sys.ptolemy Professor Lee wrote: The Switch actor will do this in DE... It will also do this in PN, without a timing model... Edward At 12:44 PM 11/19/2003 -0800, Christopher Hylands Brooks wrote: In comp.soft-sys, [EMAIL PROTECTED] (Dave from Dublin) writes: I am quite new to Ptolemy and I am working a little in the DE domain. I cannot seem to find an actor that will perform the equivalent of an IF statement, i.e. an actor that reads from a single input channel and chooses which output port to write to, based on the value read (e.g. 5 write to port1, else write to port2). Is there an actor to do this or is there another way to implement this kind of functionality? Any help greatly appreciated, This sounds a bit like Dynamic Dataflow (DDF), which is not supported in Ptolemy II. In SDF, having an actor that fires to a different port depending on its value makes it difficult to figure out the balance equations. You could try using a Comparator connected to a BooleanSelect or BooleanSwitch. Comparator is found under actor library - logic BooleanSelect and BooleanSwitch are found under actor library - boolean flow control - boolean flow control. Someone else might have a suggestion. -Christopher [EMAIL PROTECTED] (Renooj Jacob) writes: 2) I am trying to simulate Electromagnetic simulation using the Finite Difference time domain technique whose code is written in C language. I would like to do the same in Ptolemy. Is it possible? Which Director should i choose. I'm not sure. Take a look at th Continuous Time domain? -Christopher Posted to the ptolemy-hackers mailing list. Please send administrative mail for this list to: [EMAIL PROTECTED]
Speech processing
Hello, I am studying speech processing. How do I get all frames of a wave file, each frame is N=256 samples. (It is for short-time analysis) Thank you for your help Tu T. Do Posted to the ptolemy-hackers mailing list. Please send administrative mail for this list to: [EMAIL PROTECTED]
XML fragments as StringTokens/XMLTokens
I'm trying to construct a container that takes an XML fragment as a parameter value.
I've tried two approaches to this, and both result in exceptions (possibly due to
limitations in the Microstar XML parser, or laxity in my attempt to use XML).
If I use
public MyChannel extends WirelessChannel {
// ...
public Parameter pModifiers;
// ...
public MyContainer(CompositeEntity container, String name)
throws IllegalActionException {
super(container, name);
// ...
pModifiers = new Parameter(this, modifiers);
pModifiers.setExpression(modifiers/);
pModifiers.setTypeEquals(BaseType.XMLTOKEN);
}
public void attributeChanged(Attribute attribute)
throws IllegalActionException {
if (attribute == pModifiers);
Document doc;
try {
doc = ((XMLToken) pModifiers.getToken()).getDomTree();
}
catch (Exception e) {
// Results in exception here;
// the parser gets confused when it hits the first
}
}
}
then an exception occurs while building the Vergil palette that contains my entity:
the AElfred parser tries to interpret the value of the parameter with name modifiers
and gets confused, because isn't a valid token in an XML attribute. (The same
thing happens if I set the type of pModifiers to BaseType.STRING and attempt to parse
it on my own.) However, if I use
public MyChannel extends WirelessChannel {
// ...
public Parameter pModifiers;
// ...
public MyContainer(CompositeEntity container, String name)
throws IllegalActionException {
super(container, name);
// ...
pModifiers = new Parameter(this, modifiers);
pModifiers.setToken(new XMLToken(modifiers/));
pModifiers.setTypeEquals(BaseType.XMLTOKEN);
}
public void attributeChanged(Attribute attribute)
throws IllegalActionException {
if (attribute == pModifiers);
Document doc;
try {
doc = ((XMLToken) pModifiers.getToken()).getDomTree();
}
catch (Exception e) {
// Results in exception here;
// the parser gets confused when it hits the first
}
}
}
then Vergil startup goes okay, but I get an XML parsing exception when I try to update
the modifiers parameter (say, from modifiers/ to modifiers/modifiers, which
should be semantically equivalent).
Is it possible to include an XML expression as a mutable part of an entity's
configuration, just as string or record parameters are mutable? (Keep in mind that
the XML expression isn't MoML.) I'd be happy to treat the expression as a plain
string and do the parsing myself, but replacing all of the tag delimiters with escape
sequences (e.g. lt; or gt;) would be inconvenient.
Thanks,
Andy Z.
-
Andrew Zimdars
Modeling, Simulation, and Information Sciences (Org. ABCS)
Advanced Technology Center, Lockheed Martin Space Systems Co.
Bldg. 153, Col. 2J4
Lockheed Martin Way, Sunnyvale, CA 94089
w: 408.742.2111 m: 510.915.0662
Posted to the ptolemy-hackers mailing list. Please send administrative
mail for this list to: [EMAIL PROTECTED]
Re: XML fragments as StringTokens/XMLTokens
Andrew,
The expression language does not have any bindings for xml tokens,
unfortunately It probably should have at least a function that takes a
StringToken and returns an XMLToken.
There are several possible immediate solutions:
1) In vergil, use the expression modifiers/ (with the double quotes)
that will generate a StringToken.
In java code, this is equivalent to setExpression(\modifiers/\);
2) Change the Parameter to a StringParameter. A String parameter has a
different interpretation for expressions: from your point of view it makes
the double quotes implicit. A variable named v can be referred to as $v
with explicit string concatenation. In vergil, you would then use the
expression modifier/ (with no double quotes) and in java code, you would
say setExpression(modifier/); The down side of this is if you have a
string that contains a dollar sign, you have to escape the dollar sign.
3) Change the Parameter to a StringAttribute, which is an uninterpreted
string... This avoids the nastiness of explicit quotes and escaping dollar
signs, but makes it impossible to refer to the value of other parameters
symbolically.
Note that in each of these cases, when the expression is saved to XML, it
must be be appropriately escaped (as you seem to be aware) using lt;...
This is done automatically by the routines that save your model as an XML
file and is transparent from the point of view of Java or the user interface.
Steve
At 01:40 PM 4/14/2004 -0700, Zimdars, Andrew wrote:
I'm trying to construct a container that takes an XML fragment as a
parameter value. I've tried two approaches to this, and both result in
exceptions (possibly due to limitations in the Microstar XML parser, or
laxity in my attempt to use XML).
If I use
public MyChannel extends WirelessChannel {
// ...
public Parameter pModifiers;
// ...
public MyContainer(CompositeEntity container, String name)
throws IllegalActionException {
super(container, name);
// ...
pModifiers = new Parameter(this, modifiers);
pModifiers.setExpression(modifiers/);
pModifiers.setTypeEquals(BaseType.XMLTOKEN);
}
public void attributeChanged(Attribute attribute)
throws IllegalActionException {
if (attribute == pModifiers);
Document doc;
try {
doc = ((XMLToken)
pModifiers.getToken()).getDomTree();
}
catch (Exception e) {
// Results in exception here;
// the parser gets confused when it hits the
first
}
}
}
then an exception occurs while building the Vergil palette that contains
my entity: the AElfred parser tries to interpret the value of the
parameter with name modifiers and gets confused, because isn't a
valid token in an XML attribute. (The same thing happens if I set the
type of pModifiers to BaseType.STRING and attempt to parse it on my
own.) However, if I use
public MyChannel extends WirelessChannel {
// ...
public Parameter pModifiers;
// ...
public MyContainer(CompositeEntity container, String name)
throws IllegalActionException {
super(container, name);
// ...
pModifiers = new Parameter(this, modifiers);
pModifiers.setToken(new XMLToken(modifiers/));
pModifiers.setTypeEquals(BaseType.XMLTOKEN);
}
public void attributeChanged(Attribute attribute)
throws IllegalActionException {
if (attribute == pModifiers);
Document doc;
try {
doc = ((XMLToken)
pModifiers.getToken()).getDomTree();
}
catch (Exception e) {
// Results in exception here;
// the parser gets confused when it hits the
first
}
}
}
then Vergil startup goes okay, but I get an XML parsing exception when I
try to update the modifiers parameter (say, from modifiers/ to
modifiers/modifiers, which should be semantically equivalent).
Is it possible to include an XML expression as a mutable part of an
entity's configuration, just as string or record parameters are
mutable? (Keep in mind that the XML expression isn't MoML.) I'd be happy
to treat the expression as a plain string and do the parsing myself, but
replacing all of the tag delimiters with escape sequences (e.g. lt; or
gt;) would be inconvenient.
Thanks,
Andy Z.
-
Andrew Zimdars
Modeling, Simulation, and Information Sciences (Org. ABCS)
Advanced Technology Center, Lockheed Martin Space Systems Co.
Bldg. 153, Col. 2J4
Lockheed Martin Way, Sunnyvale, CA 94089
w: 408.742.2111 m: 510.915.0662
RE: Using Ptolemy II embedded in my product
Hi Christopher How do I run the shallow code generator from the command line? Michael The shallow code generator will read in certain models and generate java files. (See http://ptolemy.eecs.berkeley.edu/ptolemyII/ptIIlatest/ptII/doc/codegen.htm ) Below I ran the shallow code generator on ptII/ptolemy/domains/de/lib/test/auto/Queue.xml and added throws lines so that it would compile The file is in the ptolemy/copernicus/shallow/cg/Queue directory, so it is in the ptolemy.copernicus.shallow.cg.Queue package. [EMAIL PROTECTED] 66% pwd /vol/maury/maury2/cxh/ptII/ptolemy/copernicus/shallow/cg/Queue [EMAIL PROTECTED] 67% cat CGQueue.java /* CGQueue - Decompiled by JODE * Visit http://jode.sourceforge.net/ */ package ptolemy.copernicus.shallow.cg.Queue; Posted to the ptolemy-hackers mailing list. Please send administrative mail for this list to: [EMAIL PROTECTED]
Re: memory problem
This bounced because of configuration problem on the mail server, so I'm resending it. -Christopher --- Forwarded Message From: Stephen Andrew Neuendorffer [EMAIL PROTECTED] To: Nilgun Fescioglu Unver [EMAIL PROTECTED], [EMAIL PROTECTED], [EMAIL PROTECTED] Subject: [Ptolemy] Re: memory problem Date: Wed, 31 Mar 2004 08:55:16 -0800 The culprit is apparently the Display actor, which internally uses a JTextArea, which is a known memory hog: A quick google search turns up: I can't believe this exists in Swing, but I've found that when I loaded a 2MB file into JTextArea it creates literally 394,000+ java.lang.ref.Finalizer objects that hang around event after the JTextArea is released. What's worse is my memory usage spikes to 65MB! That's 30 times the size of the text string! I don't know what java.lang.ref.Finalizer object is, or why it gets created. After 6000 iterations, that's roughly 1.3 MB of text At 01:26 PM 3/30/2004 -0800, Nilgun Fescioglu Unver wrote: Hi, Sorry if you received this message for the second time.. I have a java.lang.OutOfMemory error problem with my model developed in Ptolemy II version 3.0.2. I am working on a model which uses an ArrayToken (of 180 tokens) and my actors change the value of the tokens in each iteration. As tokens are immutable I am creating new tokens in each iteration. During the run time after several iterations the system stops with an error java.lang.OutOfMemory. I thought some problem with garbage collection is creating the problem so I tried calling System.gc at the end of fire() function in my actors but there was no change in the number of iterations before getting the error. I tried to generate the same problem with the actors of Ptolemy and created a simple model using the ArrayExtract actor (the xml file is attached) and ran into the same problem after several iterations (6143 iterations on a computer with 512MB Ram, Windows XP operating system, java version 1.4.2 ). Could you help me to find out the reason of this problem? And how can I continue the simulation without running out of memory? Thanks, Nilgun Fescioglu Unver Attachment deleted Posted to the ptolemy-hackers mailing list. Please send administrative mail for this list to: [EMAIL PROTECTED]
memory problem
Hi,
Sorry if you received this message for the second
time..
I have a java.lang.OutOfMemory error problem with my
model developed in Ptolemy II version 3.0.2.
I am working on a model which uses an ArrayToken (of
180 tokens) and my actors change the value of the
tokens in each iteration. As tokens are immutable I am
creating new tokens in each iteration. During the run
time after several iterations the system stops with an
error java.lang.OutOfMemory. I thought some problem
with garbage collection is creating the problem so I
tried calling System.gc at the end of fire() function
in my actors but there was no change in the number of
iterations before getting the error.
I tried to generate the same problem with the actors
of Ptolemy and created a simple model using the
ArrayExtract actor (the xml file is attached) and ran
into the same problem after several iterations (6143
iterations on a computer with 512MB Ram, Windows XP
operating system, java version 1.4.2 ).
Could you help me to find out the reason of this
problem? And how can I continue the simulation without
running out of memory?
Thanks,
Nilgun Fescioglu Unver
__
Do you Yahoo!?
Yahoo! Finance Tax Center - File online. File on time.
http://taxes.yahoo.com/filing.html?xml version=1.0 standalone=no?
!DOCTYPE entity PUBLIC -//UC Berkeley//DTD MoML 1//EN
http://ptolemy.eecs.berkeley.edu/xml/dtd/MoML_1.dtd;
entity name=memoryTest2 class=ptolemy.actor.TypedCompositeActor
property name=_createdBy class=ptolemy.kernel.attributes.VersionAttribute value=3.0.2
/property
property name=DE Director class=ptolemy.domains.de.kernel.DEDirector
property name=startTime class=ptolemy.data.expr.Parameter value=0.0
/property
property name=stopTime class=ptolemy.data.expr.Parameter value=1.7976931348623E308
/property
property name=stopWhenQueueIsEmpty class=ptolemy.data.expr.Parameter value=true
/property
property name=synchronizeToRealTime class=ptolemy.data.expr.Parameter value=false
/property
property name=isCQAdaptive class=ptolemy.data.expr.Parameter value=true
/property
property name=minBinCount class=ptolemy.data.expr.Parameter value=2
/property
property name=binCountFactor class=ptolemy.data.expr.Parameter value=2
/property
property name=_location class=ptolemy.kernel.util.Location value=95.0, 35.0
/property
/property
property name=_windowProperties class=ptolemy.actor.gui.WindowPropertiesAttribute value={bounds={104, 174, 815, 518}}
/property
property name=_vergilSize class=ptolemy.actor.gui.SizeAttribute value=[600, 400]
/property
property name=annotation class=ptolemy.kernel.util.Attribute
property name=_hideName class=ptolemy.kernel.util.SingletonAttribute
/property
property name=_iconDescription class=ptolemy.kernel.util.SingletonConfigurableAttribute
configuresvgtext x=20 y=20 style=font-size:14; font-family:SansSerif; fill:blueafter 6143 iterations java lang.OutOfMemory error
/text/svg/configure
/property
property name=_smallIconDescription class=ptolemy.kernel.util.SingletonConfigurableAttribute
configure
svg
text x=20 style=font-size:14; font-family:SansSerif; fill:blue y=20-A-/text
/svg
/configure
/property
property name=_controllerFactory class=ptolemy.vergil.basic.NodeControllerFactory
/property
property name=_editorFactory class=ptolemy.vergil.toolbox.AnnotationEditorFactory
/property
property name=_location class=ptolemy.kernel.util.Location value=70.0, 235.0
/property
/property
entity name=SingleEvent class=ptolemy.domains.de.lib.SingleEvent
property name=time class=ptolemy.data.expr.Parameter value=0.0
/property
property name=value class=ptolemy.data.expr.Parameter value={0.0944506216287, 0.0975191625284, 0.0944506216287, 0.0857999241191, 0.0730679504667, 0.0582762735578, 0.0434458637753, 0.0301629913445, 0.0193529221347, 0.0112813340563, 0.0084582314143, 0.0049053935788, 0.0027967090808, 0.0016312805584, 0.0010305804697, 7.414891291827E-4, 6.1146737601312E-4, 5.5677601186248E-4, 5.3524811455656E-4, 5.2731439069799E-4, 5.2457583224341E-4, 5.2369013529995E-4, 5.2342166719598E-4, 5.2334537982137E-4, 5.2332505352927E-4, 5.2331997439197E-4, 5.2331878392172E-4, 5.2331852216018E-4, 5.2331846815861E-4, 5.2331845770494E-4, 5.233184558059E-4, 5.2331845548212E-4, 5.2331845543031E-4, 5.2331845542253E-4, 5.2331845542143E-4, 5.2331845542128E-4, 5.2331845542126E-4, 5.2331845542126E-4, 5.2331845542126E-4, 5.2331845542126E-4, 5.2331845542126E-4, 5.2331845542126E-4, 5.2331845542126E-4, 5.2331845542126E-4, 5.2331845542126E-4, 5.2331845542126E-4, 5.2331845542126E-4, 5.2331845542126E-4, 5!
.2331845542126E-4, 5.2331845542126E-4, 5.2331845542126E-4, 5.2331845542126E-4, 5.2331845542126E-4,
Add an extra button to Ptolemy/Vergil
Hi, The short question is: How do I add a button to the toolbar in Ptolemy. I'm working on a add-on for ptolemy to do some specific actions. The goal is for users to click the to-be made button and then let the magic happen: validation of some values against a database. The huge amount of code dazzled me :) Where do I start with extending vergil/ptolemy to fit my needs? Martijn Bodewes -- Posted to the ptolemy-hackers mailing list. Please send administrative mail for this list to: [EMAIL PROTECTED]
Re: Add an extra button to Ptolemy/Vergil
At 10:48 AM 3/29/2004 +0200, Martijn Bodewes wrote:
Hi,
The short question is: How do I add a button to the toolbar in Ptolemy.
I'm working on a add-on for ptolemy to do some specific actions. The goal
is for users to click the to-be made button and then let the
magic happen: validation of some values against a database. The huge
amount of code dazzled me :) Where do I start with extending
vergil/ptolemy to fit my needs?
The simplest way to do this is to define an attribute that you
drop into your model where double clicking on your attribute invokes
your magic. Below is an example of such an attribute that in this
case opens its own, custom UI for a verification tool called Chic.
You can also add buttons to the toolbar, but doing so is more involved.
You need to subclass the ActorGraphFrame to add to the toolbar,
and ActorGraphTableau, which creates the ActorGraphFrame
(both in $PTII/ptolemy/vergil/actor). Then you need to create
a Configuration (like those in $PTII/ptolemy/configs) to create
this tableau rather than the default one.
This latter mechanism is intended for much more drastic changes
to the UI than just adding a button to the toolbar (you can create
a completely custom UI for a model this way).
Hope this helps...
Edward
--- the attribute that you drop in your model:
public class ChicInvoker extends Attribute {
/** Construct an attribute with the specified container and name.
* @param container The container.
* @param name The name of the attribute.
* @exception IllegalActionException If the factory is not of an
* acceptable attribute for the container.
* @exception NameDuplicationException If the name coincides with
* an attribute already in the container.
*/
public ChicInvoker(NamedObj container, String name)
throws IllegalActionException, NameDuplicationException {
super(container, name);
// Create a custom icon.
_attachText(_iconDescription, svg\n +
rect x=\-50\ y=\-25\
+ width=\100\ height=\50\
+ style=\fill:white\/\n
+ image x=\-50\ y=\-25\ width=\100\ height=\50\
+ xlink:href=\ptolemy/chic/chic.gif\/\n
+ /svg\n);
// Do not show the actor name.
new SingletonAttribute(this, _hideName);
// Create the attribute that overrides what you do when you
// double click.
new ChicControllerFactory(this, _controllerFactory);
...
}
-- The controller attribute:
/* An attribute that produces a custom node controller for ChicInvoker.
Copyright (c) 1998-2003 The Regents of the University of California.
All rights reserved.
Permission is hereby granted, without written agreement and without
license or royalty fees, to use, copy, modify, and distribute this
software and its documentation for any purpose, provided that the above
copyright notice and the following two paragraphs appear in all copies
of this software.
IN NO EVENT SHALL THE UNIVERSITY OF CALIFORNIA BE LIABLE TO ANY PARTY
FOR DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES
ARISING OUT OF THE USE OF THIS SOFTWARE AND ITS DOCUMENTATION, EVEN IF
THE UNIVERSITY OF CALIFORNIA HAS BEEN ADVISED OF THE POSSIBILITY OF
SUCH DAMAGE.
THE UNIVERSITY OF CALIFORNIA SPECIFICALLY DISCLAIMS ANY WARRANTIES,
INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. THE SOFTWARE
PROVIDED HEREUNDER IS ON AN AS IS BASIS, AND THE UNIVERSITY OF
CALIFORNIA HAS NO OBLIGATION TO PROVIDE MAINTENANCE, SUPPORT, UPDATES,
ENHANCEMENTS, OR MODIFICATIONS.
PT_COPYRIGHT_VERSION_2
COPYRIGHTENDKEY
@ProposedRating
@AcceptedRating
*/
package ptolemy.chic;
// Diva imports
import diva.graph.GraphController;
// Ptolemy imports
import ptolemy.kernel.util.*;
import ptolemy.vergil.basic.NamedObjController;
import ptolemy.vergil.basic.NodeControllerFactory;
// Java imports
//
ChicControllerFactory
/**
This is an attribute that produces a custom node controller for
Chic visible attributes. This class creates an instance of
ChicController, for controlling Chic visible attributes in a ptolemy
model.
@author Eleftherios Matsikoudis
@version $Id: ChicControllerFactory.java,v 1.2 2003/07/28 01:26:53 cxh Exp $
@since Ptolemy II 3.0
*/
public class ChicControllerFactory extends NodeControllerFactory {
/** Construct a new attribute with the given container and name.
* @param container The container.
* @param name The name.
* @exception IllegalActionException If the attribute cannot be contained
* by the proposed container.
* @exception NameDuplicationException If the container already has an
* attribute with this name.
*/
public
Updating Actor in User Library
I've saved a composite actor in my User Library and now I want to update it with some changes. When I try saving over the existing actor using Graph, Save in Library, I get the error message: Save in Library failed: An object already exists in the user library with name ... Also, I've tried to find where the user library is stored on my computer and delete the old version of the actor directly, but have not been able to locate the directory the User Library is stored in. What's procedure to update actors in the User Library? Thanks for your help! - Keith Jacobs Posted to the ptolemy-hackers mailing list. Please send administrative mail for this list to: [EMAIL PROTECTED]
Re: Random numbers
Kostas Oikonomou [EMAIL PROTECTED] writes: I'm trying to see if I can use the DE domain of Ptolemy II to simulate a simple semi- Markov process. The main obstacle I've run into is that I can't see any way of generating random numbers from distributions other than the exponential and normal. Is there some relatively easy way of doing this? (i.e. no Java code, because I don't know enough Java). I remember from a while ago that Ptolemy Classic had such facilities. I'm not sure. I don't know that much about random numbers. In Ptolemy II 3.0, there are the following actors that generate random numbers under actor library-random Bernoulli - An actor that outputs a random sequence of booleans. DiscreteRandomSource - An actor that produces tokens with a given probability mass function. Gaussian - An actor that outputs a random sequence with a Gaussian distribution. Rician - An actor that outputs a random sequence with a Rician distribution. Uniform - An actor that outputs a random sequence with a uniform distribution. Under actor library - sources - timed sources, there is PoissonClock - A Poisson process clock source. The expression language has random() and gaussian() functions: The functions random() and gaussian() shown in Table 5 on page 96 return one or more random numbers. With the minimum number of arguments (zero or two, respectively), they return a single number. With one additional argument, they return an array of the specified length. With a second additional argument, they return a matrix with the specified number of rows and columns. There is a key subtlety when using these functions in Ptolemy II. In particular, they are evaluated only when the expression within which they appear is evaluated. The result of the expression may be used repeatedly without re-evaluating the expression. Thus, for example, if the ivalue/i parameter of the iConst/i actor is set to random()/font, then its output will be a random constant, i.e., it will not change on each firing. The output will change, however, on successive runs of the model. In contrast, if this is used in an Expression actor, then each firing triggers an evaluation of the expression, and consequently will result in a new random number. random() and gaussian() are declared in ptolemy/data/expr/UtilityFunctions.java. You could add other functions to that file. You could also use the interface to Matlab, see http://ptolemy.eecs.berkeley.edu/ptolemyII/ptII3.0/ptII3.0.2/ptolemy/matlab/matlab.htm Someone else on the list might have other suggestions. -Christopher Posted to the ptolemy-hackers mailing list. Please send administrative mail for this list to: [EMAIL PROTECTED]
Port Width for LinearStateSpace Input
Title: Port Width for LinearStateSpace Input I am building a simulation using a LinearStateSpace actor. I have configured this actor and used a Continuous Sinewave as a test input. When I run the simulation, I get the following Exception message: The number of columns of the B matrix (1) should be equal to the width of the input port (0) How do I set the input port width to the correct width? Thanks! Keith Jacobs
Re: Using Ptolemy II embedded in my product
Michael Doorley writes:
Hi Christopher
Thanks for adding me to the list.
1. Can I use Ptolemy II by calling methods in the API that would
create a model, populate it, run a simulation and extract the results?
As a bonus for the advanced user I would like to save the model as an
XML file that could be opened in Ptolemy II GUI tools (e.g. Vergil),
but that is not a priority.
Yes. See ptolemy/actor/gui/MoMLSimpleApplication.java and
ptolemy/actor/gui/PtExecuteApplication.java, which both instantiate and
run
a model.
I have looked at MoMLSimpleApplication.java and my problem with it is that
it seems to require a file as input. I am looking for a solution where I
can create and populate model in memory directly from my program. The
closest thing I have found is the Dining Philosophers demo of the CSP
domain, which does not seem to have a file dependency, unless I am missing
it.
I am currently trying build an equivalent of that program for DE. Do you
know if any similar sample already exists?
Thanks for your help,
Michael
Sorry, I thought you wanted to _read_ a MoML file.
You could do something similar to how the
ptII/ptolemy/domains/ct/demo/Helicopter/Helicopter.java
works.
You could create a similar model with domain polymorphic or DE
actors and using the DE Director
Note that if you call
System.out.println(exportMoML());
from within a TypedCompositeActor, then you will get the MoML output.
See also:
ct/demo/Lorenz/Lorenz.java
ct/demo/SigmaDelta/SigmaDelta.java
ct/demo/SquareWave/SquareWave.java
ct/demo/StickyMasses/StickyMasses.java
ct/demo/Thermostat/Thermostat.java
sdf/demo/Butterfly/Butterfly.java
For example, to run the last demo, you would do
java -classpath ptolemy.actor.gui.CompositeActorApplication -class
ptolemy.domains.sdf.demo.Butterfly.Butterfly
The shallow code generator will read in certain models and generate
java files.
(See
http://ptolemy.eecs.berkeley.edu/ptolemyII/ptIIlatest/ptII/doc/codegen.htm)
Below I ran the shallow code generator on
ptII/ptolemy/domains/de/lib/test/auto/Queue.xml
and added throws lines so that it would compile
The file is in the ptolemy/copernicus/shallow/cg/Queue
directory, so it is in the ptolemy.copernicus.shallow.cg.Queue package.
[EMAIL PROTECTED] 66% pwd
/vol/maury/maury2/cxh/ptII/ptolemy/copernicus/shallow/cg/Queue
[EMAIL PROTECTED] 67% cat CGQueue.java
/* CGQueue - Decompiled by JODE
* Visit http://jode.sourceforge.net/
*/
package ptolemy.copernicus.shallow.cg.Queue;
import ptolemy.actor.IOPort;
import ptolemy.actor.TypedCompositeActor;
import ptolemy.actor.TypedIOPort;
import ptolemy.actor.TypedIORelation;
import ptolemy.actor.gui.LocationAttribute;
import ptolemy.actor.gui.SizeAttribute;
import ptolemy.actor.lib.Clock;
import ptolemy.actor.lib.Test;
import ptolemy.data.expr.Parameter;
import ptolemy.domains.de.kernel.DEDirector;
import ptolemy.domains.de.kernel.DEIOPort;
import ptolemy.domains.de.lib.Queue;
import ptolemy.kernel.ComponentPort;
import ptolemy.kernel.CompositeEntity;
import ptolemy.kernel.attributes.VersionAttribute;
import ptolemy.kernel.util.Settable;
import ptolemy.kernel.util.Workspace;
import ptolemy.kernel.util.IllegalActionException;
import ptolemy.kernel.util.NameDuplicationException;
import ptolemy.moml.Documentation;
import ptolemy.moml.Vertex;
public class CGQueue extends TypedCompositeActor
{
public VersionAttribute A_createdBy;
public SizeAttribute A_vergilSize;
public LocationAttribute A_vergilLocation;
public DEDirector ADE;
public Parameter ADE_startTime;
public Parameter ADE_stopTime;
public Parameter ADE_stopWhenQueueIsEmpty;
public Parameter ADE_synchronizeToRealTime;
public Parameter ADE_isCQAdaptive;
public Parameter ADE_minBinCount;
public Parameter ADE_binCountFactor;
public ComponentPort PQueue_input;
public ComponentPort PQueue_output;
public ComponentPort PQueue_trigger;
public ComponentPort PClock_output;
public ComponentPort PClock_trigger;
public Parameter AClock_stopTime;
public Parameter AClock_period;
public Parameter AClock_offsets;
public Parameter AClock_values;
public Parameter AClock_numberOfCycles;
public Documentation AClock__doc;
public ComponentPort PClock2_output;
public ComponentPort PClock2_trigger;
public Parameter AClock2_stopTime;
public Parameter AClock2_period;
public Parameter AClock2_offsets;
public Parameter AClock2_values;
public Parameter AClock2_numberOfCycles;
public Documentation AClock2__doc;
public ComponentPort PTest_input;
public ComponentPort PTest_output;
public Parameter ATest_correctValues;
public Parameter ATest_tolerance;
public Parameter ATest_trainingMode;
public Vertex Arelation5_vertex1;
public CGQueue(Workspace workspace) throws IllegalActionException,
NameDuplicationException {
super(workspace);
__CGInit();
}
Re: Firing by events
The single window tabbed interface by Jerome Blanc and Benoit Masson of Thales might be useful here. This interface is in the ptII developer tree in $PTII/thales. The single window interface has not yet been publically released. To start it up from, run vergil -single. The ptII/thales/README says: For the single window mode, the principle is to catch the frames created on each Tableau and move its container into the main TabbedPane. In this mode, you can either create classic editors, or navigable graph editor where beside the actors library there is a browsable model tree (warning : this doesn't work with any state machine actor, because there is only a navigable ActorGraphFrame, and there should be other navigable Frame for modal models, FSM and interface automation actors. This could be solved by merging the NavigableActorGraphFrame features into the BasicGraph Frame, but as always we try to develop without modifying the original Ptolemy sources.) There is a specific effigy for navigable models (single window mode). To create this specific effigy, the MoML file should contain a property at the top level named _navigable (property name=3D_navigable /). It is created automatically for each new navigable graph editor (new menu), and could be added on existing models. So, perhaps this code could be used as the basis of an applet that would allow traversal of the model? The other thing I was working on was extending the applet code generator so that it would generate a Web Start setup that would consist of only the classes necessary to run the model. This work is still in progress. -Christopher Professor Lee wrote: At 05:00 PM 2/18/2004 -0800, Efrat Jaeger wrote: A different question is about applets. When I create an applet out of a model that contains a composite entity, is it possible to look inside the composite entity from within the applet? (for presenting and running the workflow on a web page). This has been on the to do list for some time... But it's not entirely clear what it should do... replace the current image in the web page? Open a window? Go to a new page? I'm inclined to think it should go to a new page, so the back button takes you back... Edward Posted to the ptolemy-hackers mailing list. Please send administrative mail for this list to: [EMAIL PROTECTED]
Re: Firing by events
At 05:00 PM 2/18/2004 -0800, Efrat Jaeger wrote: A different question is about applets. When I create an applet out of a model that contains a composite entity, is it possible to look inside the composite entity from within the applet? (for presenting and running the workflow on a web page). This has been on the to do list for some time... But it's not entirely clear what it should do... replace the current image in the web page? Open a window? Go to a new page? I'm inclined to think it should go to a new page, so the back button takes you back... Edward Edward A. Lee, Professor 518 Cory Hall, UC Berkeley, Berkeley, CA 94720 phone: 510-642-0455, fax: 510-642-2739 [EMAIL PROTECTED], http://ptolemy.eecs.berkeley.edu/~eal Posted to the ptolemy-hackers mailing list. Please send administrative mail for this list to: [EMAIL PROTECTED]
changing default 'configure' action
Hi, I'm trying to change the default action for double clicking (or choosing 'configure' from the right click menu) on an actor. It appears that in the class ConfigureAction, EditParametersDialog is hard coded to be the default editor for configuration. Is there anyway to circumvent this so I can replace EditParametersDialog? I know I can change the editor for a specific actor, but I'd like to change the default for all of them and this seems like the place to do it. thanks, chad Posted to the ptolemy-hackers mailing list. Please send administrative mail for this list to: [EMAIL PROTECTED]
Re: VersionAttribute equals false problem
Interesting... Your fix looks right to me... And in fact this
is a serious memory leak, so the fix is much appreciated.
I believe that the reason _tupleList is null is that the instance
of VersionAttribute is added to the workspace before setContainer()
is called to set the container. Then when setContainer() is called,
the object should get removed from the workspace, since the workspace
only contains top-level objects. setContainer() is called in the constructor
of the base class, probably NamedObj, so the fields of the derived
class have not been constructed yet.
I've implemented your fix in our development tree...
Edward
At 11:15 AM 1/29/2004 +0100, Richard van der Laan wrote:
Hi there,
I discovered a problem related to the VersionAttribute class while
integrating the ptolemy kernel in one of our own applications. Our
application creates a default workspace that is reused over the life-cycle
of many executed models. Models are manually parsed from a MoML file and
added to the workspace as seperate composite entities. After the model has
been executed it is removed from the workspace. By printing a workspace
directory list after the remove operation I discovered that the
VersionAttribute that is contained by the model is not removed from the
workspace. I don't know if Vergil creates a single workspace that is
reused for every new model, but in our application this eventually leads
to a out of memory exception.
The workspace remove operation discards all contained named objects by
calling remove on the internal workspace directory list. However this
operation fails for a VersionAttribute object. By analysing the equals
method of this class I discovered that equals fails for a comparison
between two identical object references:
public boolean equals(Object obj) {
// If the _tupleList is null, then we are not fully constructed.
// I see no choice but to return false.
if (_tupleList == null) {
---return false;
}
if (obj instanceof VersionAttribute) {
return (compareTo(obj) == 0);
}
return false;
}
Somehow the tupleList attribute does not exist during this call. I should
mention that the VersionAttribute object was created by the MoMl parser
and setExpression was applied under normal conditions. Therefore I cannot
explain why tupleList is null. Maybe there is a clone method involved.
However if it is correct that the tupleList attribute can be null under
these conditions, the implemention of the equals method should be modified
by calling equals on it's parent:
public boolean equals(Object obj) {
if (_tupleList == null) {
--- return super.equals(obj);
}
if (obj instanceof VersionAttribute) {
return (compareTo(obj) == 0);
}
return false;
}
This provides a working solution to our problem. However the fact that
tupleList can be null when parsed from a MoML file doesn't make any sense
to me.
Kind regards,
Richard van der Laan / [L]uminis
Email : [EMAIL PROTECTED]
TheWeb: http://www.luminis.nl
Posted to the ptolemy-hackers mailing list. Please send administrative
mail for this list to: [EMAIL PROTECTED]
Edward A. Lee, Professor
518 Cory Hall, UC Berkeley, Berkeley, CA 94720
phone: 510-642-0455, fax: 510-642-2739
[EMAIL PROTECTED], http://ptolemy.eecs.berkeley.edu/~eal
Posted to the ptolemy-hackers mailing list. Please send administrative
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Re: [Ptolemy] Re: how to set icon locations
From: [EMAIL PROTECTED] (Manish_Kushwaha) Subject: how to set icon locations Date: 14 Jan 2004 13:25:30 -0800 Hi there, I am using ptolemy II for my application. I have a small question. I want to place the entity icons at specified locations. I have a file having a list of what icon will go where. Can someone tell me how do we read those file entries and set _location property in the XML file. Is this the correct way to set location or there is another approach. Thank you, Manish Kushwaha The MoML representation of location is, by default: property name=_location class=ptolemy.kernel.util.Location value=205.0, 155.0 /property If you simply set the X and Y value as shown, this will work. You could use an XSL script, for example. You can also set the position of an icon within a Ptolemy model. There is an example at: $PTII/ptolemy/actor/parameters/demo/Bouncer/ It uses a parameter of class ptolemy.actor.parameters.LocationParameter whic can have a value that is an expression that depends on other parameters in the model. In that example, the location is changed dynamically. Edward Edward A. Lee, Professor 518 Cory Hall, UC Berkeley, Berkeley, CA 94720 phone: 510-642-0455, fax: 510-642-2739 [EMAIL PROTECTED], http://ptolemy.eecs.berkeley.edu/~eal Posted to the ptolemy-hackers mailing list. Please send administrative mail for this list to: [EMAIL PROTECTED]
Creating subfolders using one file
Hello, I'm working on an application where I need to create a folder composed of some number of actor subfolders. The subfolders are created dynamically, by executing a specific actor. (The actor wraps external operations as Ptolemy II actors and places them in folders in the hierarchy.) Since the number of subfolders are not specified in advance and the number of subfolder files can be very big, I don't want to create a file for each folder and link them using the input source=... moml facility. To solve this, I was wondering if there is a way to create subfolders without having to give references to input sources. So instead of saying input source=ptolemy/actor/lib/... under the entity, can I have other entities defining subfolders (in just one file)? Has anyone had this problem before? Or do you have any suggestions on how it would be done if it is possible to do it? I appreciate your help. Thanks, Ilkay Posted to the ptolemy-hackers mailing list. Please send administrative mail for this list to: [EMAIL PROTECTED]
Re: Need to delay execution by 1 clk...
Hi Kiran and all, If this actor is constructed as one atomic-actor that models the eight stages of execution, I would suggest that you re-build it as a composite actor from eight diffent atmoic-actors (your own models and/or from library actors).Each atomic actor in this model would be corresponding to one of the eight stages of execution. Pipeline your actors; in other words output of (actor1/stage 1) is connected to input of (actor2/stage2);meanwhile all eight are synchronous;i.e connected to the same main clock. The DE director reacts to each positive edge as an event. The running(execution) of the overall composite actor is a sequene of events corresponding to each positive edge of the clock. In this criteria, Consider two consecutive actors (one delivering to the next) in (execution graph) ; at the positive edge both of them are Fired such that at this instance(event) T ; (actorX) delivers its output at time (T-1)to (actorX+1) and it produces simultaneously an output that to be delivered to (actorX+1)in the next firing event(next positive edge)at time (T+1).In other words the output token of actorX is reserved (not changing) in the gap between two consecutive events. for example : assume actorX output at T-1 = m actorX output at T = n (ActorX reserves-stores(flipflop) a value =m for one clock cycle) Then actor X+1 processes an input = m at time T actor X+1 processes an input = n at time T+1 Conclusion , if I understand your exact problem , this method could do your job without a delay actor in between actorX and actor X+1. Otherwise, insertion of a Timedelay with delay parameter of 1 could help. I hope that this would be helpful ... let me know about results. THANKS for your time and interest Best Regards, Mohamed A.Salem On Thu, 2003-11-27 at 13:06, Kiran SB wrote: Hi I am new to ptolemy (6 months). Currently I am using PTII 3.0.2 for building(simulating) custom actors in the DE domain, which are basically executional elements (of a reconfigurable device). In one particular situation I have an actor with 8 stages of execution. During initialize I construct a Execution(Data) flow graph depending on the selector settings in the actor. I traverse through the graph and execute each stage in it during fire. Now at one stage I need to create a delay of 1 clock. The executional unit needs to sleep for a clock and proceed to the next stage. Basically I need to forward time by a clock. setCurrentTime (currentTime+1) might not be a good idea as it might cause problems to the token's timestamp. What is to be achieved is that the currentTime after this stage should be t+1(say we started at t). I don't know if I can use DEEventQueue in any way for this purpose. Maybe its a wrong or a repeat question! I have searched all group messages and couldn't find anybody with such a requirement. Can somebody help me out with this problem? - kiran Posted to the ptolemy-hackers mailing list. Please send administrative mail for this list to: [EMAIL PROTECTED]
Re: Need to delay execution by 1 clk...
Thanks for the response... TimedDelay just sends out a token after a specified delay (send (token, delay)). what I am looking at is to stop(delay) the execution by a clock and proceed. I could have used TimedDelay if I had to delay in a particular simulation. But I need to delay inside an actor and not while sending out the Token. Just somehow hold the execution for one clock. Its a flipflop kind of a device which needs to hold the data for 1 clock and then give it out to the next stage of execution. - kiran - Original Message - From: Edward A Lee [EMAIL PROTECTED] Date: Tue, 02 Dec 2003 15:23:31 -0800 To: Kiran SB [EMAIL PROTECTED] Subject: Re: Need to delay execution by 1 clk... Will the TimedDelay actor do what you need? Edward Lee At 04:06 PM 11/27/2003 +0500, Kiran SB wrote: Hi I am new to ptolemy (6 months). Currently I am using PTII 3.0.2 for building(simulating) custom actors in the DE domain, which are basically executional elements (of a reconfigurable device). In one particular situation I have an actor with 8 stages of execution. During initialize I construct a Execution(Data) flow graph depending on the selector settings in the actor. I traverse through the graph and execute each stage in it during fire. Now at one stage I need to create a delay of 1 clock. The executional unit needs to sleep for a clock and proceed to the next stage. Basically I need to forward time by a clock. setCurrentTime (currentTime+1) might not be a good idea as it might cause problems to the token's timestamp. What is to be achieved is that the currentTime after this stage should be t+1(say we started at t). I don't know if I can use DEEventQueue in any way for this purpose. Maybe its a wrong or a repeat question! I have searched all group messages and couldn't find anybody with such a requirement. Can somebody help me out with this problem? - kiran -- __ Check out the latest SMS services @ http://www.linuxmail.org This allows you to send and receive SMS through your mailbox. Powered by Outblaze Posted to the ptolemy-hackers mailing list. Please send administrative mail for this list to: [EMAIL PROTECTED] Edward A. Lee, Professor 518 Cory Hall, UC Berkeley, Berkeley, CA 94720 phone: 510-642-0455, fax: 510-642-2739 [EMAIL PROTECTED], http://ptolemy.eecs.berkeley.edu/~eal -- __ Check out the latest SMS services @ http://www.linuxmail.org This allows you to send and receive SMS through your mailbox. Powered by Outblaze Posted to the ptolemy-hackers mailing list. Please send administrative mail for this list to: [EMAIL PROTECTED]
Re: Need to delay execution by 1 clk...
Hmm... Your problem statement is still ambiguous. If you want the delay to be a real-time delay, then you can set the synchronizeToRealTime parameter of the DEDirector. If what you need is the effect of a latch, then you want to combine the TimedDelay with the Previous actor (in the domain-specific/DE library). It's also possible that the actor you want is Sleep (in the real-time library). Edward At 06:56 PM 12/3/2003 +0500, Kiran SB wrote: Thanks for the response... TimedDelay just sends out a token after a specified delay (send (token, delay)). what I am looking at is to stop(delay) the execution by a clock and proceed. I could have used TimedDelay if I had to delay in a particular simulation. But I need to delay inside an actor and not while sending out the Token. Just somehow hold the execution for one clock. Its a flipflop kind of a device which needs to hold the data for 1 clock and then give it out to the next stage of execution. - kiran - Original Message - From: Edward A Lee [EMAIL PROTECTED] Date: Tue, 02 Dec 2003 15:23:31 -0800 To: Kiran SB [EMAIL PROTECTED] Subject: Re: Need to delay execution by 1 clk... Will the TimedDelay actor do what you need? Edward Lee At 04:06 PM 11/27/2003 +0500, Kiran SB wrote: Hi I am new to ptolemy (6 months). Currently I am using PTII 3.0.2 for building(simulating) custom actors in the DE domain, which are basically executional elements (of a reconfigurable device). In one particular situation I have an actor with 8 stages of execution. During initialize I construct a Execution(Data) flow graph depending on the selector settings in the actor. I traverse through the graph and execute each stage in it during fire. Now at one stage I need to create a delay of 1 clock. The executional unit needs to sleep for a clock and proceed to the next stage. Basically I need to forward time by a clock. setCurrentTime (currentTime+1) might not be a good idea as it might cause problems to the token's timestamp. What is to be achieved is that the currentTime after this stage should be t+1(say we started at t). I don't know if I can use DEEventQueue in any way for this purpose. Maybe its a wrong or a repeat question! I have searched all group messages and couldn't find anybody with such a requirement. Can somebody help me out with this problem? - kiran -- __ Check out the latest SMS services @ http://www.linuxmail.org This allows you to send and receive SMS through your mailbox. Powered by Outblaze --- - Posted to the ptolemy-hackers mailing list. Please send administrative mail for this list to: [EMAIL PROTECTED] Edward A. Lee, Professor 518 Cory Hall, UC Berkeley, Berkeley, CA 94720 phone: 510-642-0455, fax: 510-642-2739 [EMAIL PROTECTED], http://ptolemy.eecs.berkeley.edu/~eal -- __ Check out the latest SMS services @ http://www.linuxmail.org This allows you to send and receive SMS through your mailbox. Powered by Outblaze Edward A. Lee, Professor 518 Cory Hall, UC Berkeley, Berkeley, CA 94720 phone: 510-642-0455, fax: 510-642-2739 [EMAIL PROTECTED], http://ptolemy.eecs.berkeley.edu/~eal Posted to the ptolemy-hackers mailing list. Please send administrative mail for this list to: [EMAIL PROTECTED]
Re: Need to delay execution by 1 clk...
Will the TimedDelay actor do what you need? Edward Lee At 04:06 PM 11/27/2003 +0500, Kiran SB wrote: Hi I am new to ptolemy (6 months). Currently I am using PTII 3.0.2 for building(simulating) custom actors in the DE domain, which are basically executional elements (of a reconfigurable device). In one particular situation I have an actor with 8 stages of execution. During initialize I construct a Execution(Data) flow graph depending on the selector settings in the actor. I traverse through the graph and execute each stage in it during fire. Now at one stage I need to create a delay of 1 clock. The executional unit needs to sleep for a clock and proceed to the next stage. Basically I need to forward time by a clock. setCurrentTime (currentTime+1) might not be a good idea as it might cause problems to the token's timestamp. What is to be achieved is that the currentTime after this stage should be t+1(say we started at t). I don't know if I can use DEEventQueue in any way for this purpose. Maybe its a wrong or a repeat question! I have searched all group messages and couldn't find anybody with such a requirement. Can somebody help me out with this problem? - kiran -- __ Check out the latest SMS services @ http://www.linuxmail.org This allows you to send and receive SMS through your mailbox. Powered by Outblaze Posted to the ptolemy-hackers mailing list. Please send administrative mail for this list to: [EMAIL PROTECTED] Edward A. Lee, Professor 518 Cory Hall, UC Berkeley, Berkeley, CA 94720 phone: 510-642-0455, fax: 510-642-2739 [EMAIL PROTECTED], http://ptolemy.eecs.berkeley.edu/~eal Posted to the ptolemy-hackers mailing list. Please send administrative mail for this list to: [EMAIL PROTECTED]
Need to delay execution by 1 clk...
Hi I am new to ptolemy (6 months). Currently I am using PTII 3.0.2 for building(simulating) custom actors in the DE domain, which are basically executional elements (of a reconfigurable device). In one particular situation I have an actor with 8 stages of execution. During initialize I construct a Execution(Data) flow graph depending on the selector settings in the actor. I traverse through the graph and execute each stage in it during fire. Now at one stage I need to create a delay of 1 clock. The executional unit needs to sleep for a clock and proceed to the next stage. Basically I need to forward time by a clock. setCurrentTime (currentTime+1) might not be a good idea as it might cause problems to the token's timestamp. What is to be achieved is that the currentTime after this stage should be t+1(say we started at t). I don't know if I can use DEEventQueue in any way for this purpose. Maybe its a wrong or a repeat question! I have searched all group messages and couldn't find anybody with such a requirement. Can somebody help me out with this problem? - kiran -- __ Check out the latest SMS services @ http://www.linuxmail.org This allows you to send and receive SMS through your mailbox. Powered by Outblaze Posted to the ptolemy-hackers mailing list. Please send administrative mail for this list to: [EMAIL PROTECTED]
Coupling HLA federate with Ptolemy II ?
Hi, Which is the positioning of Ptolemy compared to HLA ? How coupling an HLA federate with Ptolemy II ? Best regards, Posted to the ptolemy-hackers mailing list. Please send administrative mail for this list to: [EMAIL PROTECTED]
Ptolemy II : reuse legacy application, distributed actors
Hi, I have 2 (newbie?) questions : * While waiting for e-ptolemy, with Ptolemy II and in the same simulation, how to use local actors and remote (distributed) actors ? : use of applets... * and how to reuse legacy application e.g. how to wrap C,FORTRAN,ADA!! code to be an Ptolemy II actor ? Best regards, Posted to the ptolemy-hackers mailing list. Please send administrative mail for this list to: [EMAIL PROTECTED]
Re: Ptolemy II : reuse legacy application, distributed actors
BERGERO Didier [EMAIL PROTECTED] writes: I have 2 (newbie?) questions : * While waiting for e-ptolemy, with Ptolemy II and in the same simulation, how to use local actors and remote (distributed) actors ? : use of applets... I'm not sure what e-ptolemy is in this context. There are some actors that use jxta in $PTII/ptolemy/actor/lib/jxta We have some corba actors, though they have not been released. We are starting to look at Grid computing, but we do not have any results to report yet. Use of applets is covered in http://ptolemy.eecs.berkeley.edu/papers/03/ptIIDesignSoftware * and how to reuse legacy application e.g. how to wrap C,FORTRAN,ADA!! code to be an Ptolemy II actor ? Ptolemy II 3.0.2 includes an interface that uses JNI, see http://ptolemy.eecs.berkeley.edu/ptolemyII/ptII3.0/ptII3.0.2/jni/doc/JNIActorHelp.pdf See also the matlab actor in $PTII/ptolemy/matlab -Christopher Posted to the ptolemy-hackers mailing list. Please send administrative mail for this list to: [EMAIL PROTECTED]
Re: removing and readding actors to a model
Ah, this sounds like an extremely useful capability...
Java has a hot-swap capability... This is used, for example,
by Eclipse when you modify and recompile a piece of code while
the debugger is running. So to some extent, you get this for
free if you use Eclipse as the development environment.
However, I suspect this hot-swap capability is tricky to use...
Sometimes Eclipse reports that a hot swap isn't
possible for some instances... I'm not sure what the
criteria are for determining whether hot swap is possible.
Anybody out there know more about this?
BTW: The capabilities you are describing here would probably
be most useful if they were folded in to the main Ptolemy II tree...
However, keep in mind that we can't fold in GPL'd code, because
then the GPL terms spread to the entire system...
Edward
At 08:38 AM 11/24/2003 -0800, Chad Berkley wrote:
hi edward,
sorry, I should have told you what I was doing. I've already written a
utility to create actor code, compile it and then put it into the actor
library. Now, I'm trying to use the same GUI that I developed to open an
existing actor, modify it, recompile it then update the relevant models
(those being the actorLibrary and the model that the edit request came
from). Is there an easier way to get the models to update with the new
actor information?
thanks,
chad
Edward A Lee wrote:
Shouldn't removing the actor also be done in a ChangeRequest?
This seems like a very puzzling thing to do... What are you trying
to accomplish?
Edward
At 10:34 AM 11/21/2003 -0800, Chad Berkley wrote:
hi,
I'm trying to remove and actor from the actorLibrary model, change it,
then re-add it. For some reason, when it re-adds, you don't see the
changes that were made.
Here's the code that I'm using:
List l = actorLibrary.entityList();
for(int i=0; il.size(); i++)
{ //look for the actor in the container.if it's there, remove it
ComponentEntity ce = (ComponentEntity)l.get(i);
if(ce.getName().equals(actor.getName()))
{
try
{
ce.setContainer(null); //remove the found entity
StringWriter buffer = new StringWriter();
ce.exportMoML(buffer, 1);
ChangeRequest request = new MoMLChangeRequest(ce, actorLibrary,
buffer.toString());
actorLibrary.requestChange(request);
break;
}
catch(Exception e)
{
throw new RuntimeException(Error removing existing actor from +
container: + e.getMessage());
}
}
}
actor.setContainer(actorLibrary);
StringWriter buffer = new StringWriter();
actor.exportMoML(buffer, 1);
ChangeRequest request = new MoMLChangeRequest(actor, actorLibrary,
buffer.toString());
actorLibrary.requestChange(request);
When the ChangeRequest is made within the loop, it seems to *add* the
actor to the library instead of remove it, even though I set the
container to null. Vergil gives me an error when it hits the 2nd
ChangeRequest saying that there is already an Entity with the same name
in the model. If I remove the ChangeRequest within the loop, it appears
to work (i.e. it does not give any error when it leaves the loop and
resets the container) but it does not, in fact, update the model.
Any ideas?
thanks,
chad
--
---
Chad Berkley
National Center for
Ecological Analysis
and Synthesis (NCEAS)
[EMAIL PROTECTED]
---
Posted to the ptolemy-hackers mailing list. Please send administrative
mail for this list to: [EMAIL PROTECTED]
Edward A. Lee, Professor
518 Cory Hall, UC Berkeley, Berkeley, CA 94720
phone: 510-642-0455, fax: 510-642-2739
[EMAIL PROTECTED], http://ptolemy.eecs.berkeley.edu/~eal
--
---
Chad Berkley
National Center for
Ecological Analysis
and Synthesis (NCEAS)
[EMAIL PROTECTED]
---
Edward A. Lee, Professor
518 Cory Hall, UC Berkeley, Berkeley, CA 94720
phone: 510-642-0455, fax: 510-642-2739
[EMAIL PROTECTED], http://ptolemy.eecs.berkeley.edu/~eal
Posted to the ptolemy-hackers mailing list. Please send administrative
mail for this list to: [EMAIL PROTECTED]
Re: removing and readding actors to a model
Chad,
I think that you need to consider the classloader issues in order to be
able to do this. The JVM loads a class using the default ClassLoader --
which I think caches the class so that it needn't load it again.
So...even if you get it reinserted into the Ptolemy hierarchy, the JVM
will still use the original class unless you override the ClassLoader.
In the examples I have seem of dynamic recompilation, the application
has had to replace the default ClassLoader with a custom one that knows
to check for new compiled versions when the JVM asks for a class to be
loaded. I sent you a Java tutorial a few months ago about this when I
was thinking about the design of the reloadable actors for Kepler. I
can drag this out again if you'd like if you don't have the original email.
Matt
Hope this helps,
Matt
Edward A Lee wrote:
Ah, this sounds like an extremely useful capability...
Java has a hot-swap capability... This is used, for example,
by Eclipse when you modify and recompile a piece of code while
the debugger is running. So to some extent, you get this for
free if you use Eclipse as the development environment.
However, I suspect this hot-swap capability is tricky to use...
Sometimes Eclipse reports that a hot swap isn't
possible for some instances... I'm not sure what the
criteria are for determining whether hot swap is possible.
Anybody out there know more about this?
BTW: The capabilities you are describing here would probably
be most useful if they were folded in to the main Ptolemy II tree...
However, keep in mind that we can't fold in GPL'd code, because
then the GPL terms spread to the entire system...
Edward
At 08:38 AM 11/24/2003 -0800, Chad Berkley wrote:
hi edward,
sorry, I should have told you what I was doing. I've already written
a utility to create actor code, compile it and then put it into the
actor library. Now, I'm trying to use the same GUI that I developed
to open an existing actor, modify it, recompile it then update the
relevant models (those being the actorLibrary and the model that the
edit request came from). Is there an easier way to get the models to
update with the new actor information?
thanks,
chad
Edward A Lee wrote:
Shouldn't removing the actor also be done in a ChangeRequest?
This seems like a very puzzling thing to do... What are you trying
to accomplish?
Edward
At 10:34 AM 11/21/2003 -0800, Chad Berkley wrote:
hi,
I'm trying to remove and actor from the actorLibrary model, change
it, then re-add it. For some reason, when it re-adds, you don't see
the changes that were made.
Here's the code that I'm using:
List l = actorLibrary.entityList();
for(int i=0; il.size(); i++)
{ //look for the actor in the container.if it's there, remove it
ComponentEntity ce = (ComponentEntity)l.get(i);
if(ce.getName().equals(actor.getName()))
{
try
{
ce.setContainer(null); //remove the found entity
StringWriter buffer = new StringWriter();
ce.exportMoML(buffer, 1);
ChangeRequest request = new MoMLChangeRequest(ce, actorLibrary,
buffer.toString());
actorLibrary.requestChange(request);
break;
}
catch(Exception e)
{
throw new RuntimeException(Error removing existing actor from
+
container: + e.getMessage());
}
}
}
actor.setContainer(actorLibrary);
StringWriter buffer = new StringWriter();
actor.exportMoML(buffer, 1);
ChangeRequest request = new MoMLChangeRequest(actor, actorLibrary,
buffer.toString());
actorLibrary.requestChange(request);
When the ChangeRequest is made within the loop, it seems to *add*
the actor to the library instead of remove it, even though I set the
container to null. Vergil gives me an error when it hits the 2nd
ChangeRequest saying that there is already an Entity with the same
name in the model. If I remove the ChangeRequest within the loop,
it appears to work (i.e. it does not give any error when it leaves
the loop and resets the container) but it does not, in fact, update
the model.
Any ideas?
thanks,
chad
--
---
Chad Berkley
National Center for
Ecological Analysis
and Synthesis (NCEAS)
[EMAIL PROTECTED]
---
Posted to the ptolemy-hackers mailing list. Please send administrative
mail for this list to:
[EMAIL PROTECTED]
Edward A. Lee, Professor
518 Cory Hall, UC Berkeley, Berkeley, CA 94720
phone: 510-642-0455, fax: 510-642-2739
[EMAIL PROTECTED], http://ptolemy.eecs.berkeley.edu/~eal
--
---
Chad Berkley
National Center for
Ecological Analysis
and Synthesis (NCEAS)
[EMAIL PROTECTED]
---
Edward A. Lee, Professor
518 Cory Hall, UC Berkeley, Berkeley, CA 94720
phone: 510-642-0455, fax: 510-642-2739
[EMAIL PROTECTED], http://ptolemy.eecs.berkeley.edu/~eal
Posted
Re: removing and readding actors to a model
I think it makes more sense to use Java's classloader to do this (as Matt
suggests) rather than hot-swap.
With hot-swap, the classes are expected to be consistent with one another
(as with a debugger, for instance)
Since there is no way to ensure this, an exception will likely result.
We've talked several times about doing this, but it always seemed very
tricky. In particular, you'd have to reload the library,
and reload some/all of the loaded models with the new class loader. There
is a facility for this in the MoMLParser
(A constructor that takes a class loader). However, only some changes can
be made while keeping the classes consistent with the
model, so there seem to be some trickiness in representing this to the user
in a consistent way.
FYI: The key to doing this in Java is that classes accessible to your class
loader should not
be accessible to the standard class loader. (i.e. they must be in a
classpath that is not accessible from $PTII).
If you follow this constraint, then it is relatively easy to implement
using the URLClassLoader class.
Steve
At 11:19 AM 11/24/2003 -0900, Matt Jones wrote:
Chad,
I think that you need to consider the classloader issues in order to be
able to do this. The JVM loads a class using the default ClassLoader --
which I think caches the class so that it needn't load it again. So...even
if you get it reinserted into the Ptolemy hierarchy, the JVM will still
use the original class unless you override the ClassLoader. In the
examples I have seem of dynamic recompilation, the application has had to
replace the default ClassLoader with a custom one that knows to check for
new compiled versions when the JVM asks for a class to be loaded. I sent
you a Java tutorial a few months ago about this when I was thinking about
the design of the reloadable actors for Kepler. I can drag this out again
if you'd like if you don't have the original email.
Matt
Hope this helps,
Matt
Edward A Lee wrote:
Ah, this sounds like an extremely useful capability...
Java has a hot-swap capability... This is used, for example,
by Eclipse when you modify and recompile a piece of code while
the debugger is running. So to some extent, you get this for
free if you use Eclipse as the development environment.
However, I suspect this hot-swap capability is tricky to use...
Sometimes Eclipse reports that a hot swap isn't
possible for some instances... I'm not sure what the
criteria are for determining whether hot swap is possible.
Anybody out there know more about this?
BTW: The capabilities you are describing here would probably
be most useful if they were folded in to the main Ptolemy II tree...
However, keep in mind that we can't fold in GPL'd code, because
then the GPL terms spread to the entire system...
Edward
At 08:38 AM 11/24/2003 -0800, Chad Berkley wrote:
hi edward,
sorry, I should have told you what I was doing. I've already written a
utility to create actor code, compile it and then put it into the actor
library. Now, I'm trying to use the same GUI that I developed to open
an existing actor, modify it, recompile it then update the relevant
models (those being the actorLibrary and the model that the edit request
came from). Is there an easier way to get the models to update with the
new actor information?
thanks,
chad
Edward A Lee wrote:
Shouldn't removing the actor also be done in a ChangeRequest?
This seems like a very puzzling thing to do... What are you trying
to accomplish?
Edward
At 10:34 AM 11/21/2003 -0800, Chad Berkley wrote:
hi,
I'm trying to remove and actor from the actorLibrary model, change it,
then re-add it. For some reason, when it re-adds, you don't see the
changes that were made.
Here's the code that I'm using:
List l = actorLibrary.entityList();
for(int i=0; il.size(); i++)
{ //look for the actor in the container.if it's there, remove it
ComponentEntity ce = (ComponentEntity)l.get(i);
if(ce.getName().equals(actor.getName()))
{
try
{
ce.setContainer(null); //remove the found entity
StringWriter buffer = new StringWriter();
ce.exportMoML(buffer, 1);
ChangeRequest request = new MoMLChangeRequest(ce, actorLibrary,
buffer.toString());
actorLibrary.requestChange(request);
break;
}
catch(Exception e)
{
throw new RuntimeException(Error removing existing actor from +
container: + e.getMessage());
}
}
}
actor.setContainer(actorLibrary);
StringWriter buffer = new StringWriter();
actor.exportMoML(buffer, 1);
ChangeRequest request = new MoMLChangeRequest(actor, actorLibrary,
buffer.toString());
actorLibrary.requestChange(request);
When the ChangeRequest is made within the loop, it seems to *add* the
actor to the library instead of remove it, even though I set the
container to null. Vergil gives me an error when it hits the 2nd
ChangeRequest saying that there is already an Entity with the same
name in the model. If I remove the
Re: [Ptolemy] Re: Implementing high level queues
At 11:33 AM 11/21/2003 -0800, [EMAIL PROTECTED] wrote: I am currently looking for a way to implement a high level queue. By this I am looking to have a queue that exists in the top level model but can be accessed in a lower level model, e.g. in submodel A, tokens can enter a queue and in submodel B, tokens can enter the same queue, e.g. for accessing a shared resource such as a LAN. Is there a way to reference a queue or some other way to implement this? Are you saying you don't want the submodels to have connections to the queue? If actors communicate outside the structure of the model of computation, then you are on your own. You can implement this in Java by, for example, having a common base class for the actors with a static data structure representing instances of the resource you want to share. However, I would caution against this approach. Since the ordering of events will be outside the model of computation, the computation will likely be nondeterministic, which means your execution will not be repeatable, and also that you won't be able to infer much from an execution (it happened to execute this way this time...). A better approach would probably be to have a mechanism for actors to communicate without connections, but within the model of computation. We are currently developing a wireless domain that is based on DE that does this. The basic mechanism is to subclass TypedIOPort to create a specialized WirelessPort that has as a parameter the name of the channel through which communication will occur. You could do something similar, creating a ResourceIOPort with a parameter that identifies the shared resource (the queue). I would be happy to help in developing this, but I don't really have much time these days... Another thing I will be looking to implement is adding extra paramenters to each event. For example at the moment my poisson event creator emits a stream of doubles, could I implement it that it emits an array instead and that the other actors, e.g. queues, comparators can accept these tokens and maybe act on a particular element of the array, e.g. array[0], without having to make changes to these actors, and then write the modified value back to array[0]? If this is not possible could I emit a stream of incrementing doubles that I can use as reference numbers to the events and have a list of parameters that would be associated with each reference number that could then be accessed and modified? As I mentioned before I am looking to model a HTTP request and I need to associate information such as the size of the page, the number of images, etc. with each request, which will then be used to determine what way the system responds. Why not just make your event a record token? Then you can have named fields of arbitrary type and manipulate them independently. Edward Edward A. Lee, Professor 518 Cory Hall, UC Berkeley, Berkeley, CA 94720 phone: 510-642-0455, fax: 510-642-2739 [EMAIL PROTECTED], http://ptolemy.eecs.berkeley.edu/~eal Posted to the ptolemy-hackers mailing list. Please send administrative mail for this list to: [EMAIL PROTECTED]
Re: removing and readding actors to a model
Shouldn't removing the actor also be done in a ChangeRequest?
This seems like a very puzzling thing to do... What are you trying
to accomplish?
Edward
At 10:34 AM 11/21/2003 -0800, Chad Berkley wrote:
hi,
I'm trying to remove and actor from the actorLibrary model, change it,
then re-add it. For some reason, when it re-adds, you don't see the
changes that were made.
Here's the code that I'm using:
List l = actorLibrary.entityList();
for(int i=0; il.size(); i++)
{ //look for the actor in the container.if it's there, remove it
ComponentEntity ce = (ComponentEntity)l.get(i);
if(ce.getName().equals(actor.getName()))
{
try
{
ce.setContainer(null); //remove the found entity
StringWriter buffer = new StringWriter();
ce.exportMoML(buffer, 1);
ChangeRequest request = new MoMLChangeRequest(ce, actorLibrary,
buffer.toString());
actorLibrary.requestChange(request);
break;
}
catch(Exception e)
{
throw new RuntimeException(Error removing existing actor from +
container: + e.getMessage());
}
}
}
actor.setContainer(actorLibrary);
StringWriter buffer = new StringWriter();
actor.exportMoML(buffer, 1);
ChangeRequest request = new MoMLChangeRequest(actor, actorLibrary,
buffer.toString());
actorLibrary.requestChange(request);
When the ChangeRequest is made within the loop, it seems to *add* the
actor to the library instead of remove it, even though I set the container
to null. Vergil gives me an error when it hits the 2nd ChangeRequest
saying that there is already an Entity with the same name in the
model. If I remove the ChangeRequest within the loop, it appears to work
(i.e. it does not give any error when it leaves the loop and resets the
container) but it does not, in fact, update the model.
Any ideas?
thanks,
chad
--
---
Chad Berkley
National Center for
Ecological Analysis
and Synthesis (NCEAS)
[EMAIL PROTECTED]
---
Posted to the ptolemy-hackers mailing list. Please send administrative
mail for this list to: [EMAIL PROTECTED]
Edward A. Lee, Professor
518 Cory Hall, UC Berkeley, Berkeley, CA 94720
phone: 510-642-0455, fax: 510-642-2739
[EMAIL PROTECTED], http://ptolemy.eecs.berkeley.edu/~eal
Posted to the ptolemy-hackers mailing list. Please send administrative
mail for this list to: [EMAIL PROTECTED]
Re: Ptolemy modeling of complex distributed software systems
Very interesting... Did you look at DEThreadActor? It has some of what you do, but not all... In particular, it doesn't have the (nice) feature that the director waits for active actors to allow time to pass. This is similar to what we've done in timed CSP and timed PN... As for these specific questions: At 06:12 PM 11/20/2003 -0600, Charles Liu wrote: The work around I have requires the insertion of a method call into the _dequeueEvents method, which can't be overriden easily due to access to private member variables in DEDirector. Here lies the question (or rather feature request): How can I request a change to the DEDirector for the next release to support what I'm attempting to do? For now, I've just modified my local copy of DEDirector. With the changes, my simulation seems to be running correctly. Please do request the change. It sounds like what you are doing is using the strategy pattern, which is often a good idea. I.e., have _dequeueEvents call a protected method where a simple default implementation is provided in the DEDirector, but your director subclasses this... If you send me your version of the DEDirector, I'll take a look. Note that any contributed code has to bear our copyright or something equivalent (e.g., you can change the name of the copyright holder if you contribute a new file). But in particular, we can't include GPL'd code in the main body of Ptolemy II, because then all of Ptolemy II will become GPL'd (this is a sort of copyright virus). Also, contributed code needs to follow our coding style in order to be included in the main code base. You can find this at: http://ptolemy.eecs.berkeley.edu/ptolemyII/ptIIlatest/ptII/doc/coding/style.htm Another (easier) question: I would like to identify tag an IOPort for special processing while creating it in the constructor of an Actor. How can I do this without adding a Parameter to it or subclassing it? All I need is something that lets me add a property (perhaps Attribute?) to the IOPort. You can simply add an attribute to a port. To do this in vergil, right click on the port, select Configure and then do add. The added property will be persistent. The attribute can also be added by Java code. The right way to do this is queue a change request, so that the attribute is added at a time when it is safe to do that. See the SDF domain director for an example... It adds attributes to ports and actors for use with scheduling. Note that in the latest release, the only way to add a non-persistent attribute was to use one of the Attribute subclasses that are not persistent, such as TransientConfigurableAttribute. In the latest version (on the CVS tree), any attribute can be made non-persistent by calling setPersistent(false). This prevents the attribute from cluttering the MoML file. Edward Edward A. Lee, Professor 518 Cory Hall, UC Berkeley, Berkeley, CA 94720 phone: 510-642-0455, fax: 510-642-2739 [EMAIL PROTECTED], http://ptolemy.eecs.berkeley.edu/~eal Posted to the ptolemy-hackers mailing list. Please send administrative mail for this list to: [EMAIL PROTECTED]
removing and readding actors to a model
hi,
I'm trying to remove and actor from the actorLibrary model, change it,
then re-add it. For some reason, when it re-adds, you don't see the
changes that were made.
Here's the code that I'm using:
List l = actorLibrary.entityList();
for(int i=0; il.size(); i++)
{ //look for the actor in the container.if it's there, remove it
ComponentEntity ce = (ComponentEntity)l.get(i);
if(ce.getName().equals(actor.getName()))
{
try
{
ce.setContainer(null); //remove the found entity
StringWriter buffer = new StringWriter();
ce.exportMoML(buffer, 1);
ChangeRequest request = new MoMLChangeRequest(ce, actorLibrary,
buffer.toString());
actorLibrary.requestChange(request);
break;
}
catch(Exception e)
{
throw new RuntimeException(Error removing existing actor from +
container: + e.getMessage());
}
}
}
actor.setContainer(actorLibrary);
StringWriter buffer = new StringWriter();
actor.exportMoML(buffer, 1);
ChangeRequest request = new MoMLChangeRequest(actor, actorLibrary,
buffer.toString());
actorLibrary.requestChange(request);
When the ChangeRequest is made within the loop, it seems to *add* the
actor to the library instead of remove it, even though I set the
container to null. Vergil gives me an error when it hits the 2nd
ChangeRequest saying that there is already an Entity with the same name
in the model. If I remove the ChangeRequest within the loop, it appears
to work (i.e. it does not give any error when it leaves the loop and
resets the container) but it does not, in fact, update the model.
Any ideas?
thanks,
chad
--
---
Chad Berkley
National Center for
Ecological Analysis
and Synthesis (NCEAS)
[EMAIL PROTECTED]
---
Posted to the ptolemy-hackers mailing list. Please send administrative
mail for this list to: [EMAIL PROTECTED]
Re: Adding a new type to BaseType
To speed up type comparisons, the TypeLattice keeps a cache of comparison information in a 2D array. The 2D array is preallocated in the TypeLattice class of size Type.HASH_MAX. You have to change that value when adding a new type. (or simply implement the getTypeHash method to return HASH_INVALID (as the documentation suggests). Note, however that it is not necessary to add new types to the type lattice, as long as they are not comparable with existing types (other than UNKNOWN and GENERAL. Simply having the type class is enough to get the type system to check types for you. There is an example of how to do this in data/type/test/TestToken.java Steve At 06:49 PM 11/4/2003 -0800, Efrat Jaeger wrote: Hi, I'm adding a new type to BaseType.java; a database connection type which would be passed between actors in a workflow to keep the DB Connection variable. I've changed the following files: TypeLattice - added nodeweight and edges (to general and unknown). Constants - added the new type to the hash table. BaseType - added the type in a similar manner as the other types. I also created a DBConToken class which contains all the methods as ObjectToken (changed for this purpose). I get an exception: ArrayIndexOutOfBound in the compare method of TypeLattice (exception 14). I saw that this exception occurs for MatrixTokens (which isn't the case here). Please let me know if there is anything else I should change in order to prevent this exception (I assume that this type should be added in a similar way to ObjectType, since it's a private case of it). I tried to solve it by changing the ConversionsUtility file as well, but it wasn't very helpful. Thank you, Efrat Posted to the ptolemy-hackers mailing list. Please send administrative mail for this list to: [EMAIL PROTECTED]
Adding a new type to BaseType
Hi, I'm adding a new type to BaseType.java;a database connection type which would be passed between actors in a workflow to keep the DB Connection variable. I've changed the following files: TypeLattice - added nodeweight and edges (to general and unknown). Constants - added the new type to the hash table. BaseType - added the type in a similar manner as the other types. I also created a DBConToken class which contains all the methods as ObjectToken (changed for this purpose). I get an exception: ArrayIndexOutOfBound in the compare method of TypeLattice (exception 14). I saw that this exception occurs for MatrixTokens (which isn't the case here). Please let me know if there is anything else I should change in order to prevent this exception (I assume that this type should be added in a similar way to ObjectType, since it's a private case of it). I tried to solve it by changing the ConversionsUtility file as well, but it wasn't very helpful. Thank you, Efrat
Re: extending the type system
Bertram: Absence of a value (something that I think a null for a double is intended to indicate) is a key property of a model of computation. I'm not sure that representing it in a data type is a good approach. In particular, a key property of process networks and dataflow is that absence is not a well-defined concept. This is a key way in which they maintain determinacy. This is why, when you call hasToken() on a port in PN, the answer is always true. I think there are potentially two better solutions: 1) Use a different MoC that has a concept of absence. E.g., DE or SR. 2) Create a new subclass of PN or SDF, where, for example, if I send through a port an instance of NullToken, then at the far end, hasToken() returns false. Having hasToken() return false will make it much easier to re-use existing actors at the receiving end. You will still need new actors to send the NullToken, however. I would look at approach 1, and only after coming up with a clear understanding of why it isn't the right solution, pursue approach 2. Implementing (2) won't be totally trivial, primarily because of the way types are enforced at run time. It will probably require some refactoring of the pertinent code. But I'm sure it could be done cleanly... Edward At 09:49 PM 10/13/2003 -0700, Bertram Ludaescher wrote: Steve, Chad: Here is a related question (I had discussed this earlier today with Shawn) on how to do things properly in PTII: The type extension mentioned by Chad, let's call it ndouble for nullable double can (and probably should) be modeled as a *supertype* to double since its instances are precisely double U null (all double numbers plus null). The problem with this, however, is that any code that works for double (say an actor computing the running average of its stream of double values) now won't work for ndouble since the latter is a supertype of the former. If it were the other way round, i.e., ndouble being a subtype of double, we could assume that all code still works for the subtype. Of course this doesn't work as-is, since the double actors don't really know what to do with a null value. Bottom line (not surprising): for existing actors to work on a new type such as ndouble, something needs to be changed to take into account the new behavior (for nulls in this case). The question is how to best engineer this in general, and in PTII in particular. Any suggestions most welcome. It also seems that the following article by Castagna is relevant to this discussion: Covariance And Contravariance:conflict Without A Cause (1994) Giuseppe Castagna http://citeseer.nj.nec.com/24009.html Bertram SAN == Stephen Andrew Neuendorffer [EMAIL PROTECTED] writes: SAN SAN Modifying the type hierarchy in this way is difficult: We haven't yet SAN implemented a good way to make it extensible in this way. SAN Part of the problem is that the type lattice is somewhat hardcoded into SAN operations on the token classes. Modifying the type hierarchy in SAN significant ways is not currently possible without modifying the existing SAN token classes at the same time. I have some ideas on improving the SAN situation, but I haven't had time to implement them yet. SAN SAN The one way that the type hierarchy *can* be simply extended is that it SAN allows the addition of new data types that are incomparable with SAN the existing types (other than UNKNOWN and GENERAL, of course). If you SAN define a new Token class, and a corresponding type class, then this type SAN will be correctly type checked. SAN SAN There are other ways to get the behavior you desire.. One is through an SAN (unimplemented) structured type called Union which operates similar SAN Unions in C... This should be relatively easy to implement, we just SAN haven't gotten around to it. Your type is then Union(double, event) or SAN something similar. SAN Another way is to use side information (a boolean, for instance) to SAN determin whether or not the double is valid. SAN Another way is to use a less constrained Model of Computation (like SR or SAN DE) which has a built-in notion of absent. SAN Any one of these would probably be significantly simpler than modifying the SAN existing double token SAN SAN Steve SAN SAN At 11:08 AM 10/13/2003 -0700, Chad Berkley wrote: Hello, We have a question about the extensibility of the Ptolemy II type system. In our project, we need to extend the type system by adding new data types and modifying the type hierarchy. As an example, we need to incorporate a new double type (as a superclass of double) that accepts null, or missing, values. We would like to add new data types without altering the Ptolemy codebase. It seems the way to do this is by overriding the TypeLattice class (to add new edges for our new extended types). We had the impression (e.g., as discussed in Chapter 12 of the manual) that this extensibility was possible. However, it appears that the TypeLattice is
Re: Is there a way to speed up the redraw?
In comp.soft-sys.ptolemy, luedeke [EMAIL PROTECTED] writes: I have the feeling that the redraw of a ptolemy.plot.Plot object is a bit slow, because doubled buffering or something else is not used, so the plot has to be recalulated each time a redraw is needed. Is there a way to speed up the redraw? Alexander Are you using the most recent version of Ptplot, Ptplot 5.3? Ptplot 5.3 is the version that shipped with Ptolemy II 3.0 There were some changes made for double buffering betweent Ptplot 5.2 and 5.3. Another change is that the lines are now drawn thicker. -Christopher Posted to the ptolemy-hackers mailing list. Please send administrative mail for this list to: [EMAIL PROTECTED]
extending the type system
Hello, We have a question about the extensibility of the Ptolemy II type system. In our project, we need to extend the type system by adding new data types and modifying the type hierarchy. As an example, we need to incorporate a new double type (as a superclass of double) that accepts null, or missing, values. We would like to add new data types without altering the Ptolemy codebase. It seems the way to do this is by overriding the TypeLattice class (to add new edges for our new extended types). We had the impression (e.g., as discussed in Chapter 12 of the manual) that this extensibility was possible. However, it appears that the TypeLattice is hard coded, e.g., it is not a parameter to the BaseType class, and instead, a default instance of TypeLattice is hard coded into BaseType. So, the questions are: Are our ideas using the Ptolemy type system code in the way in which it was intended? Are there other ways to extend types without altering the Ptolemy code? Do you have any suggestions as to our approach? thanks, chad -- --- Chad Berkley National Center for Ecological Analysis and Synthesis (NCEAS) [EMAIL PROTECTED] --- Posted to the ptolemy-hackers mailing list. Please send administrative mail for this list to: [EMAIL PROTECTED]
Plotting SVGs
Hi all, Is there a way to use PlotML files from withina Ptolemy model or perhaps it is possible to invoke PtPlot from the Vergil interface? I would like to plot SVG files similar to the way icons are created (but with a plot frame).I was able to find the code where the icons are being configured,can you please refer me to thecode wherethe icons are actuallybeing "loaded" (dealing with the SVG code). Thanks, Efrat
Re: Cancelling an Event in the DE Domain
There are two ways to generate future events: - using a DEIOPort and its send(int, Token, double) method to create an event in the future. This event cannot be cancelled. - using fireAt() to request a refiring at a future time and then when that refiring occurs, sending the output at the current time. This can be easily cancelled. Very few actors use the first method, but some of the delay actors are among them. I don't like the first method, and am considering deprecating it. The delay actors should be redone to use the second method, and I think that having a cancel port would be an excellent idea... Perhaps you would like to take a stab at making this change for VariableDelay? Edward At 01:29 PM 9/26/2003 -0400, [EMAIL PROTECTED] wrote: Hi, I'm interested in cancelling a particular discrete event that has already been scheduled. Can this be done? An example: I'm modeling a car moving on a highway in discrete steps from speed sign to speed sign. The car moves at the posted speed of the previous sign. At each speed sign the time required to reach the next sign is computed, and a delay equal to that time instantiated. But what if some asynchronous thing happens like the sudden appearance of a radar trap between signs, prior to when I will read that location. I will need to slow down, so I have a new event at the speed lign location. But, my previously calculated time-to-travel to the next sign is no longer valid: my speed has changed. I can schedule a new delay, but how do I cancel the already scheduled event? I don't see any methods in the DEDirector to cancel a specific future event, even if there was some way to precisely identify it. From an actor point-of-view, it would be nice if the variableDelay actor in the library had an additional input port labelled cancel which cancelled the pending event. Thanks! Posted to the ptolemy-hackers mailing list. Please send administrative mail for this list to: [EMAIL PROTECTED] Edward A. Lee, Professor 518 Cory Hall, UC Berkeley, Berkeley, CA 94720 phone: 510-642-0455, fax: 510-642-2739 [EMAIL PROTECTED], http://ptolemy.eecs.berkeley.edu/~eal Posted to the ptolemy-hackers mailing list. Please send administrative mail for this list to: [EMAIL PROTECTED]
Cancelling an Event in the DE Domain
Hi, I'm interested in cancelling a particular discrete event that has already been scheduled. Can this be done? An example: I'm modeling a car moving on a highway in discrete steps from speed sign to speed sign. The car moves at the posted speed of the previous sign. At each speed sign the time required to reach the next sign is computed, and a delay equal to that time instantiated. But what if some asynchronous thing happens like the sudden appearance of a radar trap between signs, prior to when I will read that location. I will need to slow down, so I have a new event at the speed lign location. But, my previously calculated time-to-travel to the next sign is no longer valid: my speed has changed. I can schedule a new delay, but how do I cancel the already scheduled event? I don't see any methods in the DEDirector to cancel a specific future event, even if there was some way to precisely identify it. From an actor point-of-view, it would be nice if the variableDelay actor in the library had an additional input port labelled cancel which cancelled the pending event. Thanks! Posted to the ptolemy-hackers mailing list. Please send administrative mail for this list to: [EMAIL PROTECTED]
Re: Point width on XYPlotter
In the XYPlotter, click on the plot format button in the upper right (this is the second from the right button that has two red impulse lines) Then select Marks: dots Save your model When you run it again, it will have a dot for the single point. The way this works is that the MoML file gets some plotml inside a configure element that sets the marks to dots -Christopher Christopher Hylands Brooks [EMAIL PROTECTED] University of California Programmer/Analyst Chess/Ptolemy/GSRC US Mail: 558 Cory Hall #1770 ph: 510.643.9841 fax:510.642.2739 Berkeley, CA 94720-1770 home: (F-Tu) 707.665.0131 (W-F) 510.655.5480 (office: 400A Cory) Hi, I'm trying to plot a single point on XYPlotter. How can I control the width of the point, so that I'll be able to view it? It is also necessary for plotting a sequence of points, if the connected variable is set to false. Thanks, Efrat --- - Posted to the ptolemy-hackers mailing list. Please send administrative mail for this list to: [EMAIL PROTECTED] Posted to the ptolemy-hackers mailing list. Please send administrative mail for this list to: [EMAIL PROTECTED]
Re: icon editor
The icon editor is toast... I've started working on a scheme that will allow for both editing icons and decorating models with drawings, but I'm afraid that the time I get to write software is so little that it may be months before I finish this... :-( Edward At 01:37 PM 9/23/2003 -0700, Chad Berkley wrote: Hi, I read in the release notes of Ptolemy II 3.0.2 that the icon editor is not yet integrated, but I was was wondering if this also means that it does not work. I've tried to run ptolemy.vergil.icon.IconEditor and it throws a NullPointerException around line 239 of IconEditor. I followed up on the exception and it appears that there is a null PaintedList object being created around line 271 in IconEditorPane.java. I can't figure out where this exception is coming from (I think it's an object in Diva) but I was wondering if this is a known problem or if I'm doing something wrong. Should the iconEditor execute properly or is it a work-in-progress? thanks, chad -- --- Chad Berkley National Center for Ecological Analysis and Synthesis (NCEAS) [EMAIL PROTECTED] --- Posted to the ptolemy-hackers mailing list. Please send administrative mail for this list to: [EMAIL PROTECTED] Edward A. Lee, Professor 518 Cory Hall, UC Berkeley, Berkeley, CA 94720 phone: 510-642-0455, fax: 510-642-2739 [EMAIL PROTECTED], http://ptolemy.eecs.berkeley.edu/~eal Posted to the ptolemy-hackers mailing list. Please send administrative mail for this list to: [EMAIL PROTECTED]
Re: diva source code of newest version
Tristan Crecelius [EMAIL PROTECTED] writes: where can I find the newest source code of the diva lib. Last version used from Ptolemy is dated 21.04.2003 (diva.jar 1.035.788 Bytes) I've created a snapshot of the Diva tree from April 22, 2003 and made it available on the Ptolemy II 3.0.2 source download page http://ptolemy.eecs.berkeley.edu/ptolemyII/ptII3.0/index.htm Both .tar.gz and zip files are available directly: http://ptolemy.eecs.berkeley.edu/ptolemyII/ptII3.0/diva-22Apr03.tar.gz http://ptolemy.eecs.berkeley.edu/ptolemyII/ptII3.0/diva-22Apr03.zip It is not necessary to download the Diva source files to build Ptolemy II, Ptolemy II includes diva.jar. Download the diva .tar.gz or .zip if you are interested in extending the Ptolemy II GUI itself. 1. Download either diva-22Apr03.tar.gz (1.8 Mb), or diva-22Apr03.zip (2.5Mb) 2. Change to the Ptolemy II directory and uncompress them. For example: cd $PTII tar -zxf /tmp/diva-22Apr03.tar.gz 3. Follow the instructions in $PTII/diva/README.txt Note that this diva snapshot will build a slightly smaller jar file than what was shipped: 974201 bytes instead of 1035788 bytes. One difference is that a few test directories are not included. There are minor differences in a few .class files as well. I'm told that these primarily are caused by local variables being renamed in the version of diva.jar that was shipped with Ptolemy II 3.0.2 Let me know if you have problems. The diva home page is on http://www.gigascale.org/diva Note that the diva home page will move to http://embedded.eecs.berkeley.edu/diva at somepoint in the not to distant future. -Christopher Christopher Hylands Brooks [EMAIL PROTECTED] University of California Programmer/Analyst Chess/Ptolemy/GSRC US Mail: 558 Cory Hall #1770 ph: 510.643.9841 fax:510.642.2739 Berkeley, CA 94720-1770 home: (F-Tu) 707.665.0131 (W-F) 510.655.5480 (office: 400A Cory) Posted to the ptolemy-hackers mailing list. Please send administrative mail for this list to: [EMAIL PROTECTED]
icon editor
Hi, I read in the release notes of Ptolemy II 3.0.2 that the icon editor is not yet integrated, but I was was wondering if this also means that it does not work. I've tried to run ptolemy.vergil.icon.IconEditor and it throws a NullPointerException around line 239 of IconEditor. I followed up on the exception and it appears that there is a null PaintedList object being created around line 271 in IconEditorPane.java. I can't figure out where this exception is coming from (I think it's an object in Diva) but I was wondering if this is a known problem or if I'm doing something wrong. Should the iconEditor execute properly or is it a work-in-progress? thanks, chad -- --- Chad Berkley National Center for Ecological Analysis and Synthesis (NCEAS) [EMAIL PROTECTED] --- Posted to the ptolemy-hackers mailing list. Please send administrative mail for this list to: [EMAIL PROTECTED]
Re: icon editor
It sounds like you have a proof that it doesn't work! :) In all seriousness, the Icon Editor was written quite a while ago and was never really useful enough to be used, even when it did run. I think a better long term solution is to integrate one of the many SVG-creating graphics tools into Vergil and to use an open source SVG library to paint the icons on the screen. Unfortunately, this is probably going to be alot of work. I have tried using XML-Batik for doing this, but it doesn't handle painting at arbitrary scaling terribly well: it is more oriented towards fixed-size image generation. Currently you can rather easily replace the icon of an actor with a reference to a manually created gif image. This is probably a much simpler approach at the moment. Steve At 01:37 PM 9/23/2003 -0700, Chad Berkley wrote: Hi, I read in the release notes of Ptolemy II 3.0.2 that the icon editor is not yet integrated, but I was was wondering if this also means that it does not work. I've tried to run ptolemy.vergil.icon.IconEditor and it throws a NullPointerException around line 239 of IconEditor. I followed up on the exception and it appears that there is a null PaintedList object being created around line 271 in IconEditorPane.java. I can't figure out where this exception is coming from (I think it's an object in Diva) but I was wondering if this is a known problem or if I'm doing something wrong. Should the iconEditor execute properly or is it a work-in-progress? thanks, chad -- --- Chad Berkley National Center for Ecological Analysis and Synthesis (NCEAS) [EMAIL PROTECTED] --- Posted to the ptolemy-hackers mailing list. Please send administrative mail for this list to: [EMAIL PROTECTED] Posted to the ptolemy-hackers mailing list. Please send administrative mail for this list to: [EMAIL PROTECTED]
Re: icon editor
Another alternative that I've seen (thanks Efrat!) was a little bit of SVG embedded right in the Java code. So one can at least create the SVG externally, then put it in somehow. Don't know if that helps. If it does, Efrat could send the code snippet. Bertram SAN == Stephen Andrew Neuendorffer [EMAIL PROTECTED] writes: SAN SAN It sounds like you have a proof that it doesn't work! :) SAN In all seriousness, the Icon Editor was written quite a while ago and was SAN never really useful enough to be used, even when it did run. SAN SAN I think a better long term solution is to integrate one of the many SAN SVG-creating graphics tools into Vergil and to use SAN an open source SVG library to paint the icons on the screen. Unfortunately, SAN this is probably going to be alot of work. I have tried using XML-Batik SAN for doing this, but it doesn't handle painting at arbitrary scaling SAN terribly well: it is more oriented towards fixed-size image generation. SAN SAN Currently you can rather easily replace the icon of an actor with a SAN reference to a manually created gif image. SAN This is probably a much simpler approach at the moment. SAN SAN Steve SAN SAN At 01:37 PM 9/23/2003 -0700, Chad Berkley wrote: Hi, I read in the release notes of Ptolemy II 3.0.2 that the icon editor is not yet integrated, but I was was wondering if this also means that it does not work. I've tried to run ptolemy.vergil.icon.IconEditor and it throws a NullPointerException around line 239 of IconEditor. I followed up on the exception and it appears that there is a null PaintedList object being created around line 271 in IconEditorPane.java. I can't figure out where this exception is coming from (I think it's an object in Diva) but I was wondering if this is a known problem or if I'm doing something wrong. Should the iconEditor execute properly or is it a work-in-progress? thanks, chad -- --- Chad Berkley National Center for Ecological Analysis and Synthesis (NCEAS) [EMAIL PROTECTED] --- Posted to the ptolemy-hackers mailing list. Please send administrative mail for this list to: [EMAIL PROTECTED] SAN SAN SAN SAN SAN Posted to the ptolemy-hackers mailing list. Please send administrative SAN mail for this list to: [EMAIL PROTECTED] Posted to the ptolemy-hackers mailing list. Please send administrative mail for this list to: [EMAIL PROTECTED]
Real life applications of Synchronous Data flow with cycles
Hello, I am currently trying to understand the implementation of the SDF domain. I am wondering if someone can provide me with a list of real-life SDF examples that have cycles other than a simple source-sink cyclic relationship. It is not difficult to see applications where feedback-systems can be implemented in SDF, however what applications are available that can have cycles other than simple feedback loops. What applications exist that can use such a domain with that constraint? I am aware that the user is to inject a token into the SDF actor to inititate the director. Your help is appreciated. Thanks, Hiren Posted to the ptolemy-hackers mailing list. Please send administrative mail for this list to: [EMAIL PROTECTED]
problems rebuilding Ptolemy classic from scratch
Hi again. Thanks all for your answers to my last question. i'm trying ti rebuild from scratch Ptolemy classic 0.7.1. I am with linux debian 3.0 (woody).I use bash, not cshell. I got the sources to 0.7.1,, the tar-gz archives with the global src and others. Then I untar the archives, in $PTOLEMY, and foollow the instructions in the web page of Ptolemy project, doing make and make install. Then an error happened, something related with Tycho. Perhaps I hasn't got Tcl/tk or something about that. Then, I do: make everything Now, I got an error related with xv. I suppose that I didn't finish my installation or something doesn't work right, because when I try to start pigi from $PTOLEMY/bin/pigi, it says that pigi.Rpc doesn't exists or is not prepared to be executable. I think I'm doing something wrong. Perphaps it would be easier if I get some .deb files from ptolemy, but I don't know how to got them. Can I receive some help? Thanks again and regards. - This mail sent through IMP: http://horde.org/imp/ Posted to the ptolemy-hackers mailing list. Please send administrative mail for this list to: [EMAIL PROTECTED]
Re: problems rebuilding Ptolemy classic from scratch
I have some notes for compiling Ptolemy II 0.7.2 devel under Linux at http://ptolemy.eecs.berkeley.edu/ptolemyclassic/pt0.7.2/linux.htm I'll see about adding a more prominent link to that page from the 0.7.1 page. xv not compiling is fairly common, you can run without it. xv is also available elsewhere. If pigiRpc is not present, then you probably have a compilation problem. Try cd $PTOLEMY make make.out and then look in make.out for lines that contain three *** -Christopher Hi again. Thanks all for your answers to my last question. i'm trying ti re build from scratch Ptolemy classic 0.7.1. I am with linux debian 3.0 (woody).I us e bash, not cshell. I got the sources to 0.7.1,, the tar-gz archives with the global src and others. Then I untar the archives, in $PTOLEMY, and foollow the instructi ons in the web page of Ptolemy project, doing make and make install. Then an er ror happened, something related with Tycho. Perhaps I hasn't got Tcl/tk or some thing about that. Then, I do: make everything Now, I got an error related with xv. I suppose that I didn't finish my installation or something doesn't work right, because when I try to start p igi from $PTOLEMY/bin/pigi, it says that pigi.Rpc doesn't exists or is not prep ared to be executable. I think I'm doing something wrong. Perphaps it would be easier if I get som e .deb files from ptolemy, but I don't know how to got them. Can I receive some help? Thanks again and regards. - This mail sent through IMP: http://horde.org/imp/ --- - Posted to the ptolemy-hackers mailing list. Please send administrative mail for this list to: [EMAIL PROTECTED] Posted to the ptolemy-hackers mailing list. Please send administrative mail for this list to: [EMAIL PROTECTED]
Ptolemy II under debian woody
Hi, I'm a student from Extremadura, Spain. I have tried to recompile everything to run Ptolemy II 3.0.2 in linux debian 3.0. I also got JDK 1.4.1, but I think I'm not well configured in the Java enviroment. I use linux since 3 months. Then, my question is: I would like to know what version of Ptolemy II is more stable or proved to start with it, or if the Ptolemy classic version is better for a new user like me. I know is a very simple question but I also think that you (hackers) are the best people to answer me, I'm a little bit lost from the moment. Thank you and sorry for my bad english. Posted to the ptolemy-hackers mailing list. Please send administrative mail for this list to: [EMAIL PROTECTED]
[no subject]
Hi, I have a question: I want the user to be able to click on a point on the graph in order to obtain more information about it. To do so, I need the mouse click to return the coordinates of the point. So I tried to add to the Plot object an instance of a class that implements the MouseListener interface. And then in the mouseClicked function, the getX()and getY() methods of the MouseEvent are supposed to return the coordinates of the point where the user clicked. But these coordinates are given with respect to the window where the plot is found, whereas I need the coordinates with respect to the Xaxis and Yaxis of the plot (that is the coordinates assigned to the point by my application). So I was wondering how I can obtain these coordinates upon a mouse click. Can anyone help me with that? Thanx Posted to the ptolemy-hackers mailing list. Please send administrative mail for this list to: [EMAIL PROTECTED]
Re:
Hmm, I thought I sent a reply to this earlier this week, see below From: Christopher Hylands Brooks [EMAIL PROTECTED] To: Darine Abdelahad [EMAIL PROTECTED] Subject: Re: Ptplot mouse code Cc: [EMAIL PROTECTED] Date: Wed, 03 Sep 2003 09:04:41 -0700 Take a look at the zoom code in PlotBox.java It converts from window coordinates to plot coordinates. See also http://ptolemy.eecs.berkeley.edu/java/ptplot5.2/ptolemy/plot/doc/ptplotfaq.htm#ptplot potential features -Christopher Hi, I have a question: I want the user to be able to click on a point on the graph in order to obtain more information about it. To do so, I need the mouse click to retur n the coordinates of the point. So I tried to add to the Plot object an instance of a class that implements the MouseListener interface. And then in the mouseClicked functi on, the getX()and getY() methods of the MouseEvent are supposed to return the coordinates of the point where the user clicked. But these coordinates are given with respect to the window where the plot is found, whereas I need the coordinates with respect to the Xaxis and Yaxis of the plot (that is the coordinates assigned to the point by my application). So I was wondering how I can obtain these coordinates upon a mouse click. Can anyone help me with that? Thanx Posted to the ptolemy-hackers mailing list. Please send administrative mail for this list to: [EMAIL PROTECTED]
Re: first day with ptolemyII
In comp.soft-sys.ptolemy, cfk [EMAIL PROTECTED] writes:
Well, let me answer my own question and pose the next one.
It appears the webstart is an interactive demo only.
The Web Start version if fully functional with the exception
of the Jython actor, which uses some strange caching mechanism.
See below for details.
So, I downloaded the java run-time environment and installed it. I now
have in /usr/bin executables such as java, jar, javadoc and other
somewhat familiar things (although its been a few years since I
installed java). I also have a /usr/src/ptII3.0.2 directory and
was able to './configure', 'make' and 'make install'. The first
two completed with no errors, but 'make install' has troubles at
the end with '/usr/bin/jar: invalid option -- i' and no rule to
make target 'coding/condingConfig.jar' needed by 'docConfig.jar'.
I've seen this problem with Windows Cygwin jar before, where it is not
entirely compatible with the Sun jar.
Try putting the JDK bin in your path before /usr/bin.
I'll see about making a test for this in configure.
If you really want to use /usr/bin/jar, try editing
$PTII/mk/ptcommon.mk and change
(cd $(PTJAR_TMPDIR); $(JAR) -cvf tmp.jar .; $(JAR) -i tmp.jar)
to
(cd $(PTJAR_TMPDIR); $(JAR) -cvf tmp.jar .)
in three places.
The -i option is used to generate an index for the jar file which
make applications and applets start faster.
I added /usr/src/ptII3.0.2/bin to my path in .bashrc. I also added
an export of PTII=/usr/src/ptII3.0.2. At this point, if I invoke
vergil, I can see the error couldnt find 'java/lang/Object'. I
have been here before and I think it is the lack of a setting for
JAVAHOME and CLASSPATH. Unfortunately, I dont know where
java/lang/Object is, so setting the CLASSPATH and JAVAHOME are
mysterious right now.
Seems like your Java installation is broken and not finding
any the runtime jar file that contains java.lang.Object.
I don't have a good solution for this, I don't have a Linux machine in
front of me.
Under Solaris, Object.class can be found in:
[EMAIL PROTECTED] 9% jar -tvf /opt/local/j2sdk1.4.1_02/jre/lib/rt.jar | grep
java/lang/Object.class
1428 Thu Feb 20 14:58:48 PST 2003 java/lang/Object.class
[EMAIL PROTECTED] 10%
However, adding rt.jar to the classpath should not be necessary.
The way that I would proceed is to poke around on the
Sun tutorial and make sure that your JVM works
http://java.sun.com/docs/books/tutorial/getStarted/cupojava/index.htmld
Also, you should be able to start vergil by hand by including
lib/diva.jar
Something like the following should work:
java -classpath ${PTII}:${PTII}/lib/diva.jar ptolemy.vergil.VergilApplication
I am hoping that someone who uses java a bit more then I have over
the last couple of years would consider helping me navigate this
minefield a bit.
Yep, the classpath can be a bear.
Charles
At this point, I can navigate to /usr/src/ptII3.0.2/bin
cfk [EMAIL PROTECTED] wrote in message
news:[EMAIL PROTECTED]
Gentlemen:
I downloaded the webstart and installed the ptolemyII 3.0.2
application ion a RedHat8 system and am currently enjoying
reading through the examples. But, I am puzzled by a *real*
newbie question. How do I get back to running the application
when I exit it. At this point, I can see that it
is running from a new .javaws directory and I can see http and
lastAccessed in that directory. But what do I invoke to startup
ptolemy when I exit and reboot the comptuer.
The Java Web Start Application Manager is a standalone application
that lists the Web Start applications that are available.
http://java.sun.com/j2se/1.4.2/docs/guide/jws/Readme.html#install
Under Windows, there is a standalone Java Web Start Application under
Start - All Programs - Java Web Start
Under Solaris (for me_, there is standalone Java Web Start Application zip
file installer at
/opt/local/j2sdk1.4.1_02/jre/javaws-1_2_0_02-solaris-sparc-i.zip
For now, I'll leave it on for a few days until I figure it out.
Guess everyone has to be a newbie at something on a regular
basis in order to get anywhere.
-Christopher
Christopher Hylands Brooks [EMAIL PROTECTED] University of California
Programmer/Analyst Chess/Ptolemy/GSRC US Mail: 558 Cory Hall #1770
ph: 510.643.9841 fax:510.642.2739 Berkeley, CA 94720-1770
home: (F-Tu) 707.665.0131 (W-F) 510.655.5480 (office: 400A Cory)
Posted to the ptolemy-hackers mailing list. Please send administrative
mail for this list to: [EMAIL PROTECTED]
setActions in FSM models
Hi, While in the setActions field of a transition in FSM models one can use ahierarchical destination (like state.parameter or even state.actor.parameter) it is impossible to use a hierarchical source. Sometimes it just causes an inconvinience of having a doubling parameter in the top model (i.e. it is impossible to write state.parameter=state.parameter + 1, one ought to have Parameter in the top model, e.g. TopPar, first increment it, TopPar=TopPar+1, and when set, state.parameter=TopPar). But there are more serious drawbacks, because of this. As an output of my SDF refinement all I needed was the final result of the simultaion. I wanted to use a Recorder actor in that refinement to be able to access the final result in the top model by setting the source in the setActions field to be something like: state.Recorder.getLatest(0). This does not work, the message I got was that state ID is not known. Therefore I have two questions. First, whether the possibility to use a hierarchical source is going to be implemented. This was one of the issues of a message sent to the list two years ago. You can find it here http://groups.yahoo.com/group/ptolemy-hackers/message/1722 Second, maybe, somebody could advice another way to get only the last result of a refinement (with an SDF director in it with vectorization factor set not to 1) Thanks, Michail Chavkin Posted to the ptolemy-hackers mailing list. Please send administrative mail for this list to: [EMAIL PROTECTED]
Re: Thank you!
-- Virus Warning Message (on relay2) Found virus WORM_SOBIG.F in file document_9446.pif The uncleanable file document_9446.pif is moved to /etc/iscan/virus/virLCBFcba1J. - See the attached file for details -- Virus Warning Message (on relay2) document_9446.pif is removed from here because it contains a virus. -
Re: help me on image filtering
On 7/23, in comp.soft-sys.ptolemy, Paul.Shumacher wrote:
Hi,
I am new to Ptolemy so please forgive me if this question has been
raised already.
I am interested in doing various operations on 2-D images/frames. For
example, using a
1-D FIR filter to smooth or find edges. I have tried the ImageSequence
actor followed
by MatrixToSequence or ImagePartition, but I get the following error:
Conversion is not supported from ptolemy.data.IntToken '3' to the type
[int].
I am using Ptolemy II 3.0. Any suggestions?
Well, you could use the new JAIEdgeDetection actor to do this,
there is a test at
http://ptolemy.eecs.berkeley.edu/ptolemyII/ptII3.0/ptII3.0-beta/ptolemy/actor/lib/jai/demo/test/JAIEdgeDetection.xml
If you install Ptolemy II 3.0 under Windows with the built in
JRE, the Java Advanced Imaging API will be included in the JRE.
If you are building from source, you would need to install
the Java Advanced Imaging API and rerun configure
cd $PTII
rm config.*; ./configure
cd ptolemy/actor/lib/jai
make
If you start up Ptolemy II 3.0 and do File - Open URL
and cut and paste the above URL in, the model will open for you.
You will need to change the JAIImageReader fileOrURL path
to an image on your local disk.
When you run the image, edge detection will occur.
The actors you refer to are part of the Vector Quantization
actors in sdf/lib/vq. These actors are somewhat special purpose, see
the sdf/demo/HTVQ/HTVQ.xml demo for an example use.
You should be able to create a model that has
ImageSequence - ImagePartition - ImageDisplay
1. ImageSequence reads in a series of images and outputs
IntMatrices.
If you use it, you may need to change the imageURLTemplate
from
/ptolemy/domains/sdf/lib/vq/data/seq/missa/missa***.qcf
to
ptolemy/domains/sdf/lib/vq/data/seq/missa/missa***.qcf
(I fixed this in the release and development trees)
2. ImagePartition reads in IntegerMatrices, not integers, so this could
be part of the problem in your example
Change the partitionColumns to 88 and
the partitionRows to 72
3. Add a SDFDirector and set the iterations to 100
When you run it, the ImageDisplay should pop up.
You may need to mouse on the ImageDisplay actor to get it to display
each frame.
I think the problem you were having with
ImageSequence - MatrixToSequence - ImagePartition
is that ImagePartition expects an IntMatrix, not a sequence of
Integers.
You could do
ImageSequence -
MatrixToSequence - Quantizer - Round
-SequenceToMatrix - ImageDisplay
1. ImageSequence needs the imageURLTemplate adjusted as per above.
2. In MatrixToSequence and SequenceToMatrix, set the rows to 144
and the columns to 176
4. Change the Quantizer to {-1.0, 40.0} to Quantize the values
-Christopher
Christopher Hylands Brooks [EMAIL PROTECTED] University of California
Programmer/Analyst Chess/Ptolemy/GSRC US Mail: 558 Cory Hall #1770
ph: 510.643.9841 fax:510.642.2739 Berkeley, CA 94720-1770
home: (F-Tu) 707.665.0131 (W-F) 510.655.5480 (office: 400A Cory)
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Re: [Ptolemy] Re: The ID PI is undefined. in Ptolemy II 3.0-beta ...
Yes, this is a bug in the code generator that shipped with the beta.
It is likely that the final release will include a fix that allows
constants (like PI) to be dealt with
correctly.
Note that for other reasons, the Butterfly demo will not generate usable
code. (Because the
plotter uses parts of Ptolemy II that are not initialized or understood by
the code generator).
This is also something I'm working on, but it is unlikely that a fix will
be included in the release.
Steve
At 04:04 PM 8/18/2003 -0700, Christopher Hylands Brooks wrote:
Sorry for the delay in getting back to you on this, I was
away on vacation
On 8/02, in comp.soft-sys.ptolemy, [EMAIL PROTECTED] (Long-Bao) wrote:
Hi, everyone:
I've encounterd the following exception
when I used code generator (for Java)
with the Demo Butterfly (or something else)
in SDF Domain:
Soot started on Sat Aug 02 21:58:46 CST 2003
WatchDogTimer.internalTransform(wjtp.watchDog, {time=60,
cancel=false})
ModelTransformer.internalTransform(wjtp.mt,
{targetPackage=ptolemy.copernicus.java.cg.Butterfly})
ModelTransformer: Creating actor class
ptolemy.copernicus.java.cg.Butterfly.CGRamp
for actor .Butterfly.Ramp
based on ptolemy.actor.lib.Ramp
ptolemy.kernel.util.IllegalActionException: The ID PI is undefined.
at
ptolemy.copernicus.java.DataUtilities$ActorCodeGenerationScope.getType(DataUtilities.java:366)
at
ptolemy.data.expr.ParseTreeTypeInference._getTypeForName(ParseTreeTypeInference.java:495)
at
ptolemy.data.expr.ParseTreeTypeInference.visitLeafNode(ParseTreeTypeInference.java:303)
at ptolemy.data.expr.ASTPtLeafNode.visit(ASTPtLeafNode.java:115)
at
ptolemy.data.expr.ParseTreeTypeInference._inferChild(ParseTreeTypeInference.java:536)
at
ptolemy.data.expr.ParseTreeTypeInference._inferAllChildren(ParseTreeTypeInference.java:519)
at
ptolemy.data.expr.ParseTreeTypeInference.visitProductNode(ParseTreeTypeInference.java:400)
at
ptolemy.data.expr.ASTPtProductNode.visit(ASTPtProductNode.java:124)
at
ptolemy.data.expr.ParseTreeTypeInference.inferTypes(ParseTreeTypeInference.java:78)
at
ptolemy.copernicus.java.ParseTreeCodeGenerator.generateCode(ParseTreeCodeGenerator.java:74)
at
ptolemy.copernicus.java.DataUtilities.generateExpressionCodeBefore(DataUtilities.java:184)
at
ptolemy.copernicus.java.ModelTransformer.computeAttributesBefore(ModelTransformer.java:185)
at
ptolemy.copernicus.java.GenericAtomicActorCreator.createAtomicActor(GenericAtomicActorCreator.java:196)
at
ptolemy.copernicus.java.ModelTransformer._createActorsIn(ModelTransformer.java:1462)
at
ptolemy.copernicus.java.ModelTransformer._createCompositeActor(ModelTransformer.java:1493)
at
ptolemy.copernicus.java.ModelTransformer.internalTransform(ModelTransformer.java:914)
at soot.SceneTransformer.transform(SceneTransformer.java:46)
at soot.Pack.apply(Pack.java:79)
at soot.Main.run(Main.java:1649)
at
ptolemy.copernicus.kernel.KernelMain.generateCode(KernelMain.java:17
5)
at ptolemy.copernicus.java.Main.main(Main.java:450)
Code generation of
'jar:file:/C:/Ptolemy/Ptolemy_II_3.0-beta/ptolemy/domain
s/sdf/demo/demo.jar!/ptolemy/domains/sdf/demo/Butterfly/Butterfly.xml'
failed:
java.lang.RuntimeException:
ptolemy.kernel.util.IllegalActionException: The ID PI is undefined.
at
ptolemy.copernicus.java.DataUtilities.generateExpressionCodeBefore(DataUtilities.java:188)
at
ptolemy.copernicus.java.ModelTransformer.computeAttributesBefore(ModelTransformer.java:185)
at
ptolemy.copernicus.java.GenericAtomicActorCreator.createAtomicActor(GenericAtomicActorCreator.java:196)
at
ptolemy.copernicus.java.ModelTransformer._createActorsIn(ModelTransformer.java:1462)
at
ptolemy.copernicus.java.ModelTransformer._createCompositeActor(ModelTransformer.java:1493)
at
ptolemy.copernicus.java.ModelTransformer.internalTransform(ModelTransformer.java:914)
at soot.SceneTransformer.transform(SceneTransformer.java:46)
at soot.Pack.apply(Pack.java:79)
at soot.Main.run(Main.java:1649)
at
ptolemy.copernicus.kernel.KernelMain.generateCode(KernelMain.java:175)
at ptolemy.copernicus.java.Main.main(Main.java:450)
WARNING: Default charset MS950 not supported, using ISO-8859-1 instead
All Done.
Have anyone met the same problem as me ??
Or I've done something wrong??
I'm using Ptolemy II Windows executable file that includes JVM
on Windows XP Professional SP1 and Compaq Presario 1500.
How to overcome it???
Thans a lot!!!
Long-Bao
I see the same problem in Ptolemy 3.0-beta in the Windows prebuilt
executable and in a 3.0-beta binary built from scratch.
I think the problem is the Expression actor. Generating code for
Re: dynamically reloading the treeview in vergil
Hi Edward,
Ok, so I understand in general what you are saying but I'm not
understanding the implementation details. I have created a new Tableau
NewActorWizardTableau that extends Tableau. Whithin the construtor, I
am able to call topEffigy() from the NewActorWizardTableau's container
(which is passed in via the constructor). I have the effigy of the top
level object, but I can't find any way to actually add a new actor to
it. Here's the code of my constructor:
public NewActorWizardTableau(PtolemyEffigy container, String name)
throws IllegalActionException, NameDuplicationException
{
super(container, name);
Effigy e = container.topEffigy();
Container parent = e.showTableaux().getFrame();
NewActorFrame NAFrame = new NewActorFrame(parent);
NAFrame.setBackground(BACKGROUND_COLOR);
setFrame(NAFrame);
}
So, my question is: now that I have the top level effigy (Effigy e), how
do I add my new actor to the model? I'm still a little foggy on the
concepts of the Effigys and Tableaus so please forgive any details that
I'm overlooking.
thanks,
chad
Edward A Lee wrote:
Are you referring to the actor library when you say tree view?
The actor library is a Ptolemy model like any other (see the
ptolemy.actor.gui package ... An instance Configuration, which
is a CompositeEntity, contains the library). If you add the actors
to the model (as opposed to just adding them to the XML file),
then they will appear in the tree view.
Edward Lee
At 10:09 AM 8/7/2003 -0700, Chad Berkley wrote:
Hello,
I'm working on a project in which I am writing out and compiling actors
dynamically at runtime. I would like these actors to then show up in
the treeview on the left side of Vergil but it seems that it only reads
the MoML file once. Does anyone know a way to force the tree to reread
the MoML file or is there a better way to do this? I am basically
adding an entity line to a MoML file for each actor that I dynamically
generate. If I restart Vergil, the new actors show up but I would
rather them be added at runtime.
Any help would be appreciated. I searched the archive for matters such
as this and didn't find much. If this has already been discussed
before, please just point me in the direction of the thread.
Thanks,
Chad Berkley
--
---
Chad Berkley
National Center for
Ecological Analysis
and Synthesis (NCEAS)
[EMAIL PROTECTED]
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Edward A. Lee, Professor
518 Cory Hall, UC Berkeley, Berkeley, CA 94720
phone: 510-642-0455, fax: 510-642-2739
[EMAIL PROTECTED], http://ptolemy.eecs.berkeley.edu/~eal
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Chad Berkley
National Center for
Ecological Analysis
and Synthesis (NCEAS)
[EMAIL PROTECTED]
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