Re: Using windows dll
hi Juan, Thanks for your interest. My requirement is to set (or) write values to the 'summary attributes' property window under windows 2000/XP. I have directly called Version.dll from labVIEW Call Library function and set type as 'Adopt to Type' and pass the values particular function variable (string datatype). I have tried this, but when i am running, program quits from labview environment. Can you get back to me regarding this.Thanks in advance.
Re: how can i read/write data to files compatible to code composer ?
You might want to check out this product: http://sine.ni.com/apps/we/nioc.vp?lang=UScid=11867 Regards, Ryan K.
Re: Serial Read Different from Hyperterminal
This is a good answer; I don't know of any issues where data gets corrupted somewhere between the VISA and Windows Serial API layers so there has to be some difference in settings. Check the baud rate, data bits, etc. I assume that you're using the exact same setup as far as cable, computer, port, and so on. If this is still a problem make sure that you have the latest version of VISA, or at a minimum tell me what your VISA version is so that I can look into it further. Have you tried using VISA interactive control to do the basic read/write operations? You can access this in Measurement and Automation Explorer under Tools...NI VISA...Visa Interactive Control. Also, I would like to make sure that you're using the shipping example of LabVIEW - Serial.vi. Scott B. Applications Engineer National Instruments
Re: Image acquisition using video capture card
Hello, We have a few options that we might be able to use depending on what video capture card you have. If you are using a National Instruments frame grabber to acquire the images, then this will integrate easily into LabVIEW. You can use any number of shipping examples and VIs to acquire the images or video and then save and display them. If you are using a 3rd party capture card, then, unless that company has provided VIs or DLLs that allow you to acquire and save the images, then most likely it will be difficult to create a program to acquire the images from this card into LabVIEW. The best way to do this may be to use the software or functions that came with your video card to save the images to file. Once you have saved them, you can use LabVIEW to open the images, display them, and (if you have Vision) do all types of processing of the image. Again, the hardware you have and the software/functions provided with it will dictate how easy it will be to incorporate it into LabVIEW and develop a single application to acquire, save, and display these images. I hope this helps and gives you a few ideas of what can be done and what you need to look into. If you still have any questions on what the IMAQ functions in LabVIEW can do, then let us know and we will see what else we can do. Regards, Michael Applications Engineer National Instruments
Visa 3.1 and LabVIEW 6.0.2 - some questions
Hi, by now, I have programmed interface VIs for communicating with our devices by using the old serial I/O and GPIB VIs. Now, I would like to switch to NI VISA, because I need USB, Ethernet and CAN communication functions now, and because I heard that even the serial functions are supposed to work better than the old versions. Is NI-VISA fully included in the LabVIEW FDS/PDS licence? Are there any restrictions using NI-VISA for company-specific device drivers? Can I use VISA 3.1 together with LabVIEW 6.0.2 without any problems? Thanks for your help, best regards, Gabs
fatal error datatpye.cpp (6380) when I make changes to type def
When ever I make changes to any of my type defs or global variables in my large application (24MByte) I receive the following error: D:\lvworm\src\lvsource\datatype.cpp(6380) : DAbort: unknown type $Id: //labview/branches/Wormhole/dev/lvsource/datatype.cpp#236 $ 0x005350EF - LabVIEW CompareTD + 96FF 0x0052B998 - LabVIEW CompareTDForCopy + 118 0x0052BBDE - LabVIEW CompareTD + 1EE 0x0052BCA9 - LabVIEW CompareTD + 2B9 0x0052CAE4 - LabVIEW CompareTD + 10F4 0x0052CEE2 - LabVIEW CompareTD + 14F2 0x0052BA72 - LabVIEW CompareTD + 82 0x008CEE48 - LabVIEW ProgrammaticFindHiliteResult + 9408 0x00819291 - LabVIEW OMGetClassPropListIds + 3D021 0x008EBDA7 - LabVIEW ProgrammaticFindHiliteResult + 26367 0x0081923C - LabVIEW OMGetClassPropListIds + 3CFCC 0x008EC9CE - LabVIEW ProgrammaticFindHiliteResult + 26F8E 0x008ED2DF - LabVIEW ProgrammaticFindHiliteResult + 2789F 0x005A1B03 - LabVIEW PostLVUserEvent + 5B73 0x00819291 - LabVIEW OMGetClassPropListIds + 3D021
Re: non reentrancy for TCP/IP VIs.
Rolf, I am not sure if the trouble is at TCP read and write. I have attached my VIs and a hierarchy diagram for you to understand my doubt better.They are in a different discussion thread with Mads . I am sure you should be able to see them from there. I am using LabVIEW 6.1 . Thanks -Sumit
Re: lvlog
John, you asked on June 1st, 2004: The last two times I have logged into LabVIEW 7 I have gotten an error and a file was created called lvlog with date and time appended to it. Does anyone know what this file is? I didn't see anything on the NI website or archives. This is some kind of an NI-support tool AFAIK. LV keeps a log where it stores some -possibly important- status information in case of a crash/abort etc. This is appended to the lvlog file. At its next startup LabVIEW usually detects the existance (or a changing since last start) of this file. It than asks you to provide this info to NI (investigate that error). I had this situation several times in the last months. While providing this error report you are guided to search for the specified error code in NIs public support ressources (and so possibly help yourself). Usually the error code was not yet mentioned, at least in my cases. But this little effort does not really hurd and may help me or my 'successors' min the future. My special situation (as I am from Germany with a german mail adress) is a little worse than the public, because any support requests from Germany are forwarded back to NIG in Munich. And this takes extra time and will often again require some 'callbacks' from the german support personal to Austin. NI is not willing to change this or offer the standard support path on special request. I have asked 'em several times, personally as well as via mail. Greetings from Germany! -- Uwe Frenz ~ Dr. Uwe Frenz Entwicklung getemed Medizin- und Informationtechnik AG Oderstr. 59 D-14513 Teltow Tel. +49 3328 39 42 0 Fax +49 3328 39 42 99 [EMAIL PROTECTED] WWW.Getemed.de
web publishing tool
I am using the web publishing tool in the upload a control panel to internet. In my VI, there is a sub-VI that creat by IMAQ vision builder. This sub-VI have an script that' Image buffer: retrieve copy' which will return the image that i snapped in new window. But I found that when i am using the IE to control the main VI, the image cannot be returned. Anything can I solve this problem? Thank you very much Regards, Ivan
Re: PXI or SCXI impedance analyzer?
George, you asked on 1 Jun 2004: I need to measure the impedance (low frequency, low power) of up to 16 leads. So I need an impedance analyzer and a multiplexer. Currently we have a GPIB controlled multiplexer and impedance analyzer, but would like a more compact system. Is there anyway to do this using PXI or SCXI so that we can have a smaller package? I can't seem to find an impedance analyzer for either chassis - just resistance measurement. I do not really know what an impedance analyser does other than measuring the resistance or impedance = 1/resistance of an object. IMHO a resistance measurement should be sufficient. BUT keep in mind that multiplexing adds some extra (and variable) resistance into the path, either from the relais or the semoconductors. In order to get reliable results you should use a 4-wire technique, e.g. loading the UUT with a current using two wires and sensing its voltage with another two wires. This is also the way if you need an impedance-voltage-relation or some other dependencies. HTH and Greetings from Germany! -- Uwe Frenz ~ Dr. Uwe Frenz Entwicklung getemed Medizin- und Informationtechnik AG Oderstr. 59 D-14513 Teltow Tel. +49 3328 39 42 0 Fax +49 3328 39 42 99 [EMAIL PROTECTED] WWW.Getemed.de
RE: Not quite off-topic: List misuse
Ross, Michael [EMAIL PROTECTED] wrote: As a list administrator for a small specialized mailing list and a participant in Info-LabVIEW I have some opinions on this topic. This list has never been commmercial content free, but commercial mailings are expected to be kept inobtrusive and brief. That seems to work and who am I to argue. Just my two cents here. From the original post I got the impression that the poster had previous contacts with this person, as an answer to some question he had put on Info-LabVIEW. At that time the mailing was appearently appreciated or at least no hard feelings were present. If that is really the case (and I really don't know if my impression is right) then what has been happening was that the advertiser appaerently kept the posters address in his address book and later on sent again some marketing mailing out to these addresses, maybe not really related to the original inquiry. As such the whole issue would be a little bit unclear. I for myself probably wouldn't think to good about such an advertiser but on the other hand I certainly wouldn't report him as a spammer to blocklists either and most probably just delete the mail without thinking much further. If I however receive a mailing out of the blue, it would almost certainly be reported to the blocklists I use and maybe even manually reported to its ISP and then disposed off. Rolf Kalbermatter CIT Engineering Nederland BVtel: +31 (070) 415 9190 Treubstraat 7H fax: +31 (070) 415 9191 2288 EG Rijswijkhttp://www.citengineering.com Netherlands mailto:[EMAIL PROTECTED]
Re: Is there any way to count how many cycles there has been using Function Generator VI??
Hello, there some functions in the Frontpanel under NI-Messtechnik--Datenerfassung--Z=E4hler--Ereignis oder Zeit z=E4hlen or Data Acquisition--Counter which you can use possibility. I=B4ve you like to search for example codes visit the following link http://search.ni.com/query.html?col=3Dalldocsqp=3D%2Bcontenttype%3AExample= lk=3D1qt=3D%2Bcount+%2Bcyclelayout=3DExample Reagrds Thomas D. NI Germany (SRQ 203602)
Re: how can I increment documentation?
Hello, What do you mean by documentation ? Directory ? Sincerely yours, Isabelle Jean National Instruments
Re: Polymorphic functionality of Delete From Array
George Gatling (Contractor) [EMAIL PROTECTED] wrote: The Delete From Array function has some interesting polymorphic behavior... it changes the type of one of its output terminals based on *whether* an input terminal is wired (as opposed to what type is wired to the input terminal). In particular, if length is unwired, a scalar is output. If length is wired, an array is output. I would *love* do duplicate this exact behavior for a Read Row(s) From File function. Anyone know if this is possible? No, this is not possible as you want it. This dynamic adaption needs direct manipulation of the code generator in LabVIEW and as such is only possible in LabVIEW built-in nodes. What you can do is create polymorphic VIs and make some of the inputs not present in all versions of the subVIs. There won't be automatic adaption when wiring, but you can right click and select the version of the VI you want to use. Rolf Kalbermatter CIT Engineering Nederland BVtel: +31 (070) 415 9190 Treubstraat 7H fax: +31 (070) 415 9191 2288 EG Rijswijkhttp://www.citengineering.com Netherlands mailto:[EMAIL PROTECTED]
Inserting into queue from within an event case
I seem to be having a problem with inserting into a Queue. I have a data acquisition system running with several VIs running independently int he background (loaded with VI Server) and communicating via Queues. I want to add the ability to load a previously-recorded data set, capturing the load button push through events. However, after parsing the data for the queue and sending it to the queue (no error mesasge is generated), the Queue info function still reads 0 entries in the queue. My question is: Can queues be used within Event cases? Everything else seems to be working, but the data insertion simply seems to be doing nothing. Thanks in advance Shane.
replace current version in scc with older version
I have made some changes in a vi, and I have made the check in in the SCC (Built-in). Now, I have seen that is better to use the previous version of that vi. Then, I go to retrieve version in the scc, and try to check in, but I have the error 25557, that says that the version of the server is newer than the one I want to check in. So the question is: how can I replace the current version of a vi in the SCC with an older version? Thanks in advance for your help.
Re: Maybe off topic - freeware and commercial ad
Irene He [EMAIL PROTECTED] wrote: Sure we would appreciate real freeware and thanks for it, but there is no need to depreciate non freeware, I would have understand if these people are from some non-profit organization like university, but people from industry they should accept non freeware just as with freeware if they don't provide free service themselves. Who doesn't like freebees? :-) And of course it is easier to look over an advertisement for some free tools than an aggressive commercial ad. However to actually sell LabVIEW add-ons is a very tough thing for anyone who is not National Instruments. It requires usually more in effort such as marketing, support, documentation and such than you can in most cases earn through its sales. Regarding the ad, I like to see some short ad in this list. I like to get notified about new things in LabVIEW world, so that I know one day if I need this feature, there is a way to go rather than sitting in the dark. There are too many information in internet, but there are only few places to hang out for me like this forum, so I would like to get notified here to make me feel it's powerful to work with LabVIEW, because you can do so many things...or would you rather not knowing things that is capable with LabVIEW? I have nothing against a short announcement for some new tools or products related to LabVIEW on this list, and in fact our former list maintainer Tom had a policy of explicitedly allowing such advertisements if they were brief and not intrusive, and offered people in case of doubt to ask his opinion about if a message was appropriate for the list or not. I certainly assume that this also applies to the current list maintainer. What I consider absolutely intolerable would be to harvest some or all of the email addresses from the Info-LabVIEW posts and start to mail out advertisements even for free stuff. Hope this makes sense. Of course it does ;-) Rolf Kalbermatter CIT Engineering Nederland BVtel: +31 (070) 415 9190 Treubstraat 7H fax: +31 (070) 415 9191 2288 EG Rijswijkhttp://www.citengineering.com Netherlands mailto:[EMAIL PROTECTED]
(W) Load Init file for Motion error
Hi all How can I load a different setting file for my motion controller I use the Initialize Controller.flx VI When I write the name of my Init file in the control stettings name I got a error Error -78007 occurred at Initialize Controller.flx. Motion: An invalid initialization settings name was specified. What does the error mean and what have I to do I am using MAX 3.0.2.3005 Any example Thanks Jürgen GKSS research center Jürgen Buhrz Max-Planck-Str. 1 21502 Geesthacht Germany Tel. +49 (0)4152 87 2708 FAX +49 (0)4152 87 2727 Mail [EMAIL PROTECTED]
Re: Inserting into queue from within an event case
Oops, found the problem. Sorry, wiring mistake. Shane.
Re: More doubts on: non reentrancy for TCP/IP VIs
The server part is OK. I see the session handler opens a database, my guess is there is something there that prevents parallell replies. If you strip down the session handler to just reply with a string generated in the handler; are things still not able to run side by side? If it's not could you post the stripped handler?
find value in a table
I have a table, with two columns. Both column contains strings. The first one is an indicator, and the second one the value of this indicator. The format is like this: indicator1 value1 indicator2 value2 How can I find in this table the string inidicator1 and return the corresponding value1? thank you very much for your help
Re: More doubts on: non reentrancy for TCP/IP VIs
I would have to try it ( I mean stripping of handler). But I am not sure if I would be able to feel any difference until unless the size of the string returned by the handler is of considerable size and would make the other handlers wait. As far as database is concerened I have the admin privileges for it and I can monitor the number of connection and every time a new client comes I can see a new session getting reflected.I was just wondering if it has anything to do on the client side I was trying to set the operation mode for tcp read to immediate but to no avail.
Re: Programme written in 6.1 is not writing to file in 7.0
Hi, Here is the detailed information. I am running this Labview VI for collecting data through a network analyser and controlling motion of motors through DAQ card. I have already run the cd of drivers given with Labview 7.0 The exact subvi used for writing file is the hp8720 collect data. This thing has been installed in the Laptop with version 6.1 of Labview. What I have done is that I have taken the same programme and changed its algorithm in Labview 7.0 on a different comp and copied the file back. Then I installed labview 7.0 on the Laptop and tried running the new programme. But everything is working except the writing to file. Error handling has been put up and the message I get is Error reading/writing from/to file. Check file name. Kindly help out. Regards, Harshat
Problem on filter design by using Signal Processing Toolset
Hi all, I'm now designing a filter with particular shape by using NI Digital Filter Design provided in Signal Processing Toolset. I use the Arbitrary FIR Filter Dsesign with my frequency response data file to build the filter and use it in LabVIEW. However, when I put the filtered signal to calculate THD by using Harmonic Distortion Analyzer.vi, the result was larger that the correct value. I found that when I increase the filter order, the actual frequency response become the desired response but the THD result is also increased. I tried to use 500 as the filter order and each harmonic level was quite simular to the correct level, but the THD value was wrong. Are there any suggestions? Bill
Re: Operating system support
Hello, In order to answer your query there is a Knowledge base online at : http://digital.ni.com/public.nsf/websearch/93661E9632363E7186256D12005FC9C2?OpenDocument This should answer your issue. Kind Regards Steven Bird Applications Engineer National Instruments
how to obtain plot list from xy graph
Hi! I have a XY Graph and I wnat to get the number of Plots in that Graph. There is no Property for this. Anyone knows how to do this? Bya hmann
Re: how to call LabVIEW_VI in VBScript(activex Com server) with (ByVaL, ByRef)parameters
thanks, sorry it is working fine. thanks sudheer
Re: [W] user specific LabVIEW ini file
Jason, Yes, there is. Create a new shortcut on your desktop that points to the labview executable. Once created, right click on the new shortcut and select properties. In the text box labeled target will be the full path to the labview executable. example - C:\program files\national instruments\labview\labview.ex At the end of the entry place the path to your new ini file. example - C:\program files\national instruments\labview\labview.ex -pref C:\my preferences\\labview\labview.ini Note that must be used if your paths have spaces. Also, the entry '-pref' must have a space before and after. snip. Is there any way to get LabVIEW to read a user specific LabVIEW.ini file? snip. Roger A. Coffmon Senior Design Engineer, ATE Liebert, NA http:\\www.liebert.com Emerson Network Power http:\\www.gotoemerson.com Consider It Solved This e-mail is intended only for the addressee named above. As this e-mail may contain confidential or privileged information, if you are not the named addressee, you are not authorized to retain, read, copy or disseminate this message or any part of it.
RE: [W] user specific LabVIEW ini file
Jason It's a real kludgy way of doing it but you could write a LabVIEW program that fires up LabVIEW, first get the users name then swap the current .ini with their .ini and launch LV Just a thought Dan Bookwalter N8DCJ Hi-Stat a Stoneridge Co. 345 South Mill St. Lexington, Ohio 44904 (419) 884-1219 Phone (419) 884-4172 Direct (419) 884-4195 Fax [EMAIL PROTECTED] -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] Sent: Tuesday, June 01, 2004 9:04 PM To: [EMAIL PROTECTED] Subject: [W] user specific LabVIEW ini file Is there any way to get LabVIEW to read a user specific LabVIEW.ini file? I don't have write privileges to the Program Files directory and am therefore stuck with the default choices from NI. Aren't well-behaved applications supposed to store preferences in the 'Documents and Settings/User Name' folder anyways? An amusing idea just occurred, copy the entire LabVIEW directory to an area I have write privileges to and run it from there. This being windows I'm sure the registry would get corrupted. Thanks, Jason -- Jason Corwin [EMAIL PROTECTED] (858) 592-4025 _ This electronic mail transmission contains confidential information intended only for the person(s) named. Any use, distribution, copying or disclosure by any other person is strictly prohibited. If you received this transmission in error, please send an electronic mail message to [EMAIL PROTECTED]
Re: find value in a table
it's simple, if i think the same as you. a table is a two-dimensional array of strings. first split up your table in two 1d-arrays (one for 1st column, one for the 2nd). to search a string in the 1st column (index 0) use the search 1d array function which returns the index of the element. the second array contains the values. now use the function index array again to get the value.you understood? best regards
Re: how to obtain plot list from xy graph
hi i don't know, but try it with the array size function... a xy-graph is a 1d-array of clusters. in these clusters there are two 1d-array which represent x and y coords. the array size function should return the number of plots (clusters) of the xy-graph try it and let me know if it works.. ciao
Re: Programme written in 6.1 is not writing to file in 7.0
the errror code that i am getting is d-1300 the hp8720 network analyser was installed with the previous setup. Can it be that I have to install it with th enew Labview??? For now I have just copied the directory hp8720 from the Labview 6.1 instr directory into the corresponding diresctory of Labview 7.0
Re: how to call LabVIEW_VI in VBScript(activex Com server) with (ByVaL, ByRef)parameters
Hai Ingo, One more request from you, is it posible to call LabVIEW from TestDirecotr8.0, what you gave script will work? if it will work how give the procedure. or any other procedure is there? i want to excecute this script in TestDirector8.0. thank alot reddy
Re: Is anyone aware of a timing problem when using Notifiers ?
Try setting the 'ignore previous(F)' flag to true.
Re: Parallel access of database
Ryan- That probably is it. I learned a while back to use my own Open Database Connection VI. It is just a loop that tries to open the connection, once per second for 10 seconds, until it is successful or it doesn't work. That greatly reduced the number of errors, but there is still an occasional problem. I have seen the .ldb file become corrupt for some reason, and I have seen where the data doesn't get written to the table, or should I say can't be seen by Access, but I am able to query that table for the data(one time) and it is there. It is then gone forever!
Reading a text file with Time V Voltage info
Hi, I have text files with Time and voltage info in a separate column in each which i want to plot. The problem is that the time values are not read in correctly so I must read in the data as strings, line by line. The data looks somthing like this 10:43:04=090.032 10:43:05=090.225 10:43:06=090.52 10:43:07=09-0.563 The=B4colons in the time mean that if i simply read in the file directly that the time gets messed up, so i am trying to read it line by line, without success. I have tried using shift registers and while loops without success. I have tried the =B4match pattern=B4 idea, but have been unable to generate the two columns that I want. Is there an easier solution (e.g. being able to read in the time in a way that doesn=B4t get messed up?) thanks! John M
Re: how to call LabVIEW_VI in VBScript(activex Com server) with (ByVaL, ByRef)parameters
Sorry, I am not familiar with that Software. But as long as it supports VBA or VBS it should work similarly.
Re: how can I increment documentation?
Hello, Here it is an example which allow you to create a directory : http://sine.ni.com/apps/we/niepd_web_display.display_epd4?p_guid=B45EACE3D95756A4E034080020E74861p_node=DZ52032p_source=External Hope this help ! Isabelle Jean Application Engineer National Instruments
Re: [W] user specific LabVIEW ini file
Jason, Like others have said, have a shortcut with the -pref switch on the command line. I use to have one shorcut and one labview.ini file for each project. That has the advantage to set the default directory to the project directory and to have a different Recently Opened Files lists. For those using builtin SCC, setting different default directories for projects allows to use different SCC repositories and settings. Jean-Pierre Drolet Avensys www.avensys.ca
RE: PXI or SCXI impedance analyzer?
David; This is a great idea. The '1%' that you left out has to be cost. Lets face it... PXI is expensive. Your approach has the ability to be a much more cost effective solution, Although depending on who is doing the custom HW design, this could be the trade off... Its not my intent to start a new discussion branch here, but while COTS obviously does has its advantages, I think the trend has been to cast aside custom solution based solely on cost, too often lately. I for one prefer the custom approach... Maybe its just more challenging, and what engineer doesn't like a challenge? My .02 cents Rick Mahoney Equipment Test Design Lockheed Martin Corp Syracuse NY -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] Behalf Of David A. Moore Sent: Wednesday, June 02, 2004 8:49 AM To: Info LabVIEW Mailing List Subject: Re: PXI or SCXI impedance analyzer? George, This probably won't help you, but for one project I've worked on we replaced a big HP impedance analyzer by a function generator, a high speed digitizer, and some custom circuitry. It lets us send a chirp and get impedance as a function of frequency in about 1% of the time and for 1% of the weight. --David Moore At 02:01 AM 2004-06-02 -0400, you wrote: Subject: PXI or SCXI impedance analyzer? From: Seifert, George [EMAIL PROTECTED] Date: Tue, 1 Jun 2004 12:27:21 -0500 I need to measure the impedance (low frequency, low power) of up to 16 leads. So I need an impedance analyzer and a multiplexer. Currently we have a GPIB controlled multiplexer and impedance analyzer, but would like a more compact system. Is there anyway to do this using PXI or SCXI so that we can have a smaller package? I can't seem to find an impedance analyzer for either chassis - just resistance measurement. George - -W-H-E-A-T-W-H-E-E-L-L-E-N-S-T-O-W-I-N-D-O-W-I-N-G-G-P-R-O-G-R-A-M-W-E-B - - -- David A. Moore - Moore Good Ideas, Inc. -- -- (801) 773-3067 - NI Alliance Member -- -- 1996 Allison Way --- www.MooreGoodIdeas.com -- -- Syracuse, Utah 84075 - [EMAIL PROTECTED] -- -
How to call LabVIEW from TestDirector
Hai to all, I want to call LabVIEW function from TestDirector. That TestDirector using VBScript. is it posible? if posible can you give the procedure. thanks for advance! reddy
Upgrading from LabVIEW 6.1 to 7.1, get a MS C++ Runtime Error
After upgrading from LabVIeW 6.1 to 7.1, I get a Microsoft Visual C++ Runtime Error It states: Runtime Error! Program:...ogram Files\National Instruments\LabVIEW 7.1\LabVIEW.exe abnormal program termination I am using Windows NT, ver 4.0 SP 6.
Re: best way to launch a large audio file
Hi, You could use an activeX container (activeX controls palette) to embed windows media player (or any other media player) into your app. Then use an invoke node from the application control palette to control the player. Dom.
Re: when running an application I built, I keep getting error 7
I changed the order of the elements but the problem still persists. You said something before about checking to make sure that the properties are included in the runtime engine, otherwise they will not work. I tried to check but I could not figure out how to find that information. I right clicked and then went to help but the information is not there. Could that be my problem?
Re: Maybe off topic - freeware and commercial ad
Dear Everyone,Thank you for all your replies and I appologize for any "trouble" ormisunderstanding that I may have caused whatever that is.Yes, I understand the list policy and will do my best to followIf I have too much time, I will rearrange it...(sorry off-topic again,just can't stop express feeling).Have a nice day, everyone :-)Regards,Irene
Saving the Control Values on a Front Panel
I am creating a VI in which I have approximately 10 front panel controls that can be changed by a user. Instead of entering the same values over an over again, I would like to provide the user the option to save a set of control values that can then be loaded the next time around via a drop-down box. Before I began I just wanted to see if anyone had done anything similar. I was stumped as to how to approach it. Any suggestions? Matt
lors d'une aquisition avec nue carte PCI6034E, j'obtiens l'erreur 10401
j'utilise LAbView 6.1, windows 2000
Re: Problem on filter design by using Signal Processing Toolset
There are many things that could cause the behavior you see. Is your filter settled before your perform your THD measurement? If each harmonic component seems correct but the THD too high, it could be because your fundamental tone is attenuated more than expected? Can you be more specific and explain your concerns in more details? What is your measured THD and what would you like it to be and why? How do you know it should be that value? Eventually if you could post your VIs with input data saved at default that would be helpful.
Re: Serial Communication speed is very low under WinXP but its good under WinMe
I agree with Dan's suggestion, but I have an additional question. Are you reading large amounts of data, or small? If large, then Dan's suggestion is sufficient. If small, then I would follow Dan's suggestion, but also investigate configuring your Reads and Writes to do I/O synchronously. (There's a popup setting on the Read and Write nodes for this.) By default LabVIEW does the I/O asynchronously, so that if it takes a long time to transfer, it doesn't tie up one of LabVIEW's execution threads. But for small transfers where you know the data's going to be available, the asynchronous setup can take a long time compared to dealing with the actual data transfer. I hope this helps. Brian
Re: i am gettign objheap.cpp error
I am also getting this identical objheap.cpp error at the same line number 592. I was editing my VI yesterday on a computer using winXP operating system. Today, I am trying to bring it up on win2K OS and it will not even open due to this error!! I would like to send the code to NI but it has a lot of subVIs and since I cannot open it, I cannot get the heirarachy. I suppose I could send the directory(s) to them. Any advice is appreciated. Sincerely, Don
Re: find value in a table
Thanks!! finaly I changed the table and I put an array, but your solution also works
VI hangs while attempting to save
When we try to save the VI, it hangs and we have to reopen the LabVIEW, also no modifications are saved. Size of VI is around 1MB. There are no SubVI's in the top level VI. (LabVIEW 6.1)
Re: find value in a table
Thanks!! I don=B4t have an array, I had a table, but after reading your answer I have changed it, and it works.
Accelerometer application DAQ programming
I inherited a program and project from some seniors who have since graduated. They were using strain gauges to measure motion. They developed this rather large DAQ program in Labview to acquire the signals, compare them, calculate some things, It would take me months to decipher the code. I need help in developing a labview program that acquires both the accelerometer and horn data. Then the two are compared and the difference is calculated and sent to a data file as a Response time along with the original data of first movement and horn sounding. Can anyone please help me out?
Re: How would you recommend that I schedule a file-creation...
Thanks for your response, Ryan. The only problem with that approach is that I am getting data every two seconds and I would like the data to go with the date of the file, i.e. I could potentially get about 10 seconds worth of data in the previous day's file. Not a big deal, but I already have such an approach in place and I'm looking for a precisely scheduled event.
Re: best way to launch a large audio file
Yes, the provided VIs that work with wave files just like to treat them as one enormous buffer, so that doesn't work very well for large files. Another approach would be to look at the wave file VIs and split them apart. There's part that reads the header, and there's part that reads the data. If you split that into two VIs--one for reading the header, and one for reading the data--I think you'll have good success. The reading the data part is essentially just a File Read function. As you read the data in chunks like this, you'll also want to take advantage of the SO Set Num Buffers function (or something like that). It was described very well in the most recent LabVIEW Technical Resource (LTR, see ltrpub.com). You can also look at the continuous sound output example for information about the buffer management. (I'm assuming you have LV 7 or later.) I hope this helps. Brian
Re: Maybe off topic - freeware and commercial ad
At 10:11 AM 6/2/2004, you wrote: might engender a similar warning as would a discussion of whether the Grateful Dead were the greatest all time rock band. I cast my vote for Floyd oh.. maybe that was rhetorical? :P But I do agree with you Scott... the list is most useful as a place for like minded people to bring their collective technical knowledge to bear on each others problems. I have always felt the general rule of thumb here as been that it was better to ask forgiveness than permission when posting a question that seems off topic. Of course, when the post is not solicited or a question, perhaps there is a different rule of thumb? And I can't help wondering if an off topic discussion about off topicness is something recursive that we might never escape... :)) Good thing recursion isn't allowed in LabVIEW! George Gatling Applied Technology Division, SFA Inc. Space Physics Simulation Chamber US Naval Research Laboratory 202-404-5405 (phone) 202-767-3553 (fax) If trees could scream, would we be so cavalier about cutting them down? We might, if they screamed all the time, for no good reason. --Jack Handy
RE: Maybe off topic - freeware and commercial ad
I'll have to vote for Floyd ,Allman Bros , Eric Clapton and Muddy Waters :-) Dan Bookwalter N8DCJ Hi-Stat a Stoneridge Co. 345 South Mill St. Lexington, Ohio 44904 (419) 884-1219 Phone (419) 884-4172 Direct (419) 884-4195 Fax [EMAIL PROTECTED] -Original Message- From: George Gatling (Contractor) [mailto:[EMAIL PROTECTED] Sent: Wednesday, June 02, 2004 10:40 AM To: Scott Hannahs Cc: [EMAIL PROTECTED] Subject: Re: Maybe off topic - freeware and commercial ad At 10:11 AM 6/2/2004, you wrote: might engender a similar warning as would a discussion of whether the Grateful Dead were the greatest all time rock band. I cast my vote for Floyd oh.. maybe that was rhetorical? :P But I do agree with you Scott... the list is most useful as a place for like minded people to bring their collective technical knowledge to bear on each others problems. I have always felt the general rule of thumb here as been that it was better to ask forgiveness than permission when posting a question that seems off topic. Of course, when the post is not solicited or a question, perhaps there is a different rule of thumb? And I can't help wondering if an off topic discussion about off topicness is something recursive that we might never escape... :)) Good thing recursion isn't allowed in LabVIEW! George Gatling Applied Technology Division, SFA Inc. Space Physics Simulation Chamber US Naval Research Laboratory 202-404-5405 (phone) 202-767-3553 (fax) If trees could scream, would we be so cavalier about cutting them down? We might, if they screamed all the time, for no good reason. --Jack Handy _ This electronic mail transmission contains confidential information intended only for the person(s) named. Any use, distribution, copying or disclosure by any other person is strictly prohibited. If you received this transmission in error, please send an electronic mail message to [EMAIL PROTECTED]
Re: HTML posts
At 10:53 +0200 6/2/04, Rolf Kalbermatter wrote: Would it be possible to not post with HTML to this mailing list as it is a text mailing list? The list software does it's best to strip all HTML from the mail. This is hard since people use incorrect HTML so there is no sure way to do this. The list is *supposed* to reject all mail that it can't strip the HTML from. Certain people have a problem sending non-HTML mail (Braindead AOL mailers for example have no way to do this). The rest are clueless about how to turn this feature off. I just looked thru the recent past set of messages in my inbox and only found one that had the x-flowed attribute though the mailer incorrectly marked the message content as text/plain. But I looked in the trash and my filters had dumped one Yahoo mail that had gotten thru. Again, it is hard to remove HTML on this free service. It had incorrect headers and listed it as multipart/alternative but did not have any multiparts. Sigh. Other than rejecting everyone from yahoo.com (that would simplify my life, they are most of the bad addresses that bounce) I don't have a good way of blocking it, but I will work on it. -Scott -- Dr. Scott Hannahs, National High Magnetic Field Lab Info-LabVIEW List Maintainer http://sthmac.magnet.fsu.edu/labview Subscribe: mailto://[EMAIL PROTECTED] Unsubscribe: mailto://[EMAIL PROTECTED]
RE: Maybe off topic - freeware and commercial ad
This off topic Discussion on Off Topicness is making me dizzy, But as long as I'm here... I vote, and I vote head bangin' (Sabbath, VH, Metallica) and just to be complete, I'll reference the off topic of recursion Wasn't Pluto actually Goofy's Pet? Whats up with that? Rick M -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] Behalf Of Bookwalter, Dan Sent: Wednesday, June 02, 2004 10:45 AM To: 'George Gatling (Contractor)'; Scott Hannahs Cc: [EMAIL PROTECTED] Subject: RE: Maybe off topic - freeware and commercial ad I'll have to vote for Floyd ,Allman Bros , Eric Clapton and Muddy Waters :-) Dan Bookwalter N8DCJ Hi-Stat a Stoneridge Co. 345 South Mill St. Lexington, Ohio 44904 (419) 884-1219 Phone (419) 884-4172 Direct (419) 884-4195 Fax [EMAIL PROTECTED] -Original Message- From: George Gatling (Contractor) [mailto:[EMAIL PROTECTED] Sent: Wednesday, June 02, 2004 10:40 AM To: Scott Hannahs Cc: [EMAIL PROTECTED] Subject: Re: Maybe off topic - freeware and commercial ad At 10:11 AM 6/2/2004, you wrote: might engender a similar warning as would a discussion of whether the Grateful Dead were the greatest all time rock band. I cast my vote for Floyd oh.. maybe that was rhetorical? :P But I do agree with you Scott... the list is most useful as a place for like minded people to bring their collective technical knowledge to bear on each others problems. I have always felt the general rule of thumb here as been that it was better to ask forgiveness than permission when posting a question that seems off topic. Of course, when the post is not solicited or a question, perhaps there is a different rule of thumb? And I can't help wondering if an off topic discussion about off topicness is something recursive that we might never escape... :)) Good thing recursion isn't allowed in LabVIEW! George Gatling Applied Technology Division, SFA Inc. Space Physics Simulation Chamber US Naval Research Laboratory 202-404-5405 (phone) 202-767-3553 (fax) If trees could scream, would we be so cavalier about cutting them down? We might, if they screamed all the time, for no good reason. --Jack Handy _ This electronic mail transmission contains confidential information intended only for the person(s) named. Any use, distribution, copying or disclosure by any other person is strictly prohibited. If you received this transmission in error, please send an electronic mail message to [EMAIL PROTECTED]
which command I can use to exit from a subvi without exiting from labview in run-time?
Similiar to 'Exit Sub' command in Visual Basic.
Suggestion for the list
It would be greatly appreciated if you could configure the InfoLabVIEW server so it would reject non-text based e-mail and return them to the sender with a message that they should resend as text. As you know, the list frequently gets cluttered up with stuff like this: -_=_NextPart_001_01C44828.0FDB51E1 Content-Type: text/html; charset=US-ASCII Content-Transfer-Encoding: quoted-printable !DOCTYPE HTML PUBLIC -//W3C//DTD HTML 4.0 Transitional//EN HTMLHEAD META HTTP-EQUIV=3DContent-Type CONTENT=3Dtext/html; = charset=3Dus-ascii TITLEMessage/TITLE META content=3DMSHTML 6.00.2737.800 name=3DGENERATOR/HEAD BODY DIVSPAN class=3D447192722-01062004FONT face=3DArial color=3D#ff = size=3D2PJM,/FONT/SPAN/DIV DIVSPAN class=3D447192722-01062004FONT face=3DArial color=3D#ff = size=3D2/FONT/SPANnbsp;/DIV DIVFONT face=3DArialFONT color=3D#ffFONT size=3D2YSPAN=20 class=3D447192722-01062004our Bird/SPANSPAN = class=3D447192722-01062004nbsp;is=20 getting nice.nbsp; Thanks for all the = work!/SPAN/FONT/FONT/FONT/DIV DIVFONT face=3DArialFONT color=3D#ffFONT size=3D2SPAN=20 class=3D447192722-01062004/SPAN/FONT/FONT/FONTnbsp;/DIV DIVFONT face=3DArialFONT color=3D#ffFONT size=3D2SPAN=20 class=3D447192722-01062004My wish for the Bird:nbsp;nbsp; some sort = of pick -=20 maybe Alt-Dbl-Click - in the Bird window and the BD centers at that = point.nbsp;=20 This would eliminate all that = dragging./SPAN/FONT/FONT/FONT/DIV DIVFONT face=3DArialFONT color=3D#ffFONT size=3D2SPAN=20 class=3D447192722-01062004/SPAN/FONT/FONT/FONTnbsp;/DIV DIVFONT face=3DArialFONT color=3D#ffFONT size=3D2SPAN=20 class=3D447192722-01062004Mike/SPAN/FONT/FONT/FONT/DIV BLOCKQUOTE style=3DMARGIN-RIGHT: 0px DIV/DIV DIV class=3DOutlookMessageHeader lang=3Den-us dir=3Dltr = align=3DleftFONT=20 face=3DTahoma size=3D2-Original Message-BRBFrom:/B PJ M = Lewis Drake Process Automation Corporation Belle Mead, NJ 908 359-1011 www.processauto.com
RE: Suggestion for the list
Lewis I am all too familiar with this feature, the list use to reject all my email and send me a nice notice with links to sites to explain how to fix the problem every time IT reconfigured Outlook, you wouldn't believe how hard it can be sometimes to get Outlook to send Text Only ALL the time. So maybe it can be turned back on. Dan Bookwalter N8DCJ Hi-Stat a Stoneridge Co. 345 South Mill St. Lexington, Ohio 44904 (419) 884-1219 Phone (419) 884-4172 Direct (419) 884-4195 Fax [EMAIL PROTECTED] -Original Message- From: Lewis Drake [mailto:[EMAIL PROTECTED] Sent: Wednesday, June 02, 2004 9:47 AM To: Comments Info-LabVIEW Cc: ListMgr Info-LabVIEW Subject: Suggestion for the list It would be greatly appreciated if you could configure the InfoLabVIEW server so it would reject non-text based e-mail and return them to the sender with a message that they should resend as text. As you know, the list frequently gets cluttered up with stuff like this: -_=_NextPart_001_01C44828.0FDB51E1 Content-Type: text/html; charset=US-ASCII Content-Transfer-Encoding: quoted-printable !DOCTYPE HTML PUBLIC -//W3C//DTD HTML 4.0 Transitional//EN HTMLHEAD META HTTP-EQUIV=3DContent-Type CONTENT=3Dtext/html; = charset=3Dus-ascii TITLEMessage/TITLE META content=3DMSHTML 6.00.2737.800 name=3DGENERATOR/HEAD BODY DIVSPAN class=3D447192722-01062004FONT face=3DArial color=3D#ff = size=3D2PJM,/FONT/SPAN/DIV DIVSPAN class=3D447192722-01062004FONT face=3DArial color=3D#ff = size=3D2/FONT/SPANnbsp;/DIV DIVFONT face=3DArialFONT color=3D#ffFONT size=3D2YSPAN=20 class=3D447192722-01062004our Bird/SPANSPAN = class=3D447192722-01062004nbsp;is=20 getting nice.nbsp; Thanks for all the = work!/SPAN/FONT/FONT/FONT/DIV DIVFONT face=3DArialFONT color=3D#ffFONT size=3D2SPAN=20 class=3D447192722-01062004/SPAN/FONT/FONT/FONTnbsp;/DIV DIVFONT face=3DArialFONT color=3D#ffFONT size=3D2SPAN=20 class=3D447192722-01062004My wish for the Bird:nbsp;nbsp; some sort = of pick -=20 maybe Alt-Dbl-Click - in the Bird window and the BD centers at that = point.nbsp;=20 This would eliminate all that = dragging./SPAN/FONT/FONT/FONT/DIV DIVFONT face=3DArialFONT color=3D#ffFONT size=3D2SPAN=20 class=3D447192722-01062004/SPAN/FONT/FONT/FONTnbsp;/DIV DIVFONT face=3DArialFONT color=3D#ffFONT size=3D2SPAN=20 class=3D447192722-01062004Mike/SPAN/FONT/FONT/FONT/DIV BLOCKQUOTE style=3DMARGIN-RIGHT: 0px DIV/DIV DIV class=3DOutlookMessageHeader lang=3Den-us dir=3Dltr = align=3DleftFONT=20 face=3DTahoma size=3D2-Original Message-BRBFrom:/B PJ M = Lewis Drake Process Automation Corporation Belle Mead, NJ 908 359-1011 www.processauto.com _ This electronic mail transmission contains confidential information intended only for the person(s) named. Any use, distribution, copying or disclosure by any other person is strictly prohibited. If you received this transmission in error, please send an electronic mail message to [EMAIL PROTECTED]
Re: Problems using DAQmx Channel Property Node in Labview
Hi Ian, You can wire a DAQmx Channel directly to the channel property node. For that matter, you can wire a DAQmx Channel to any DAQmx node/input that takes a DAQmx Task. LV does the conversion to a Task for you. Deborah
Re: Shared memory function call NEED HELP
Works great, thank you for the help.
Re: pc-dio-96
Thanks for all your help. I'm Not that great with IO. It works just like you said. So now all I have to do is create a task then write zero's to it at the beginning of my program. then it should work correctly right. thanks Joe
Re: which command I can use to exit from a subvi without exiting from labview in run-time?
Are you trying to exit a subVI to get back to a Main VI? If so, use a simple state machine. There is a template for this in LabVIEW. Put the SubVI inside the state machine to be called. For the subVI, under the VI Property Window Appearances, customize the window to Show Front Panel when called, and Close afterwards if originally closed. If this is what you are looking for I can send an example.
Re: how to call LabVIEW_VI in VBScript(activex Com server) with (ByVaL, ByRef)parameters
Hai, Ingo, I ahve one dobut in you script, call oVI.Call2(sIONames, sIOValues, true, true) in that call2, it is in LabVIEW? if it is in LabVIEW, here how to see that function name in LabVIEW. how to configure LabVIEW? please give the procedure.
Why can I not view my channels configured in MAX in order?
I am using the GET NAMES.VI to get the Virtual channel names from MAX, and I am calling them one at a time, starting with Channel 0. However, it spits them back out in the order they were CREATED. I thought it was my mistake but apparently if I look at the DAQ Channel Viewer inside Labview, this is still the case. Why are they organized this way and not by channel? Is there an easy way around this or do I need to start programming? LABVIEW 6.1 MAX 2.2 NI DAQ 6.9.1 Thanks! Lauren
Re: Application Builder for labVIEW 7 Doesn't support any report generation function
Hello, These are all great suggestions, and I would like to add to them by mentioning that you can programmatically return whether the program is being run as an executable or a VI. To do this, call the application property App.Kind. This property returns whether the program is currently being run in the Development System or Run-Time System. You can then use a case structure to use a different number of Strip Path functions depending on the system. Hope this helps! Liz F National Instruments
How to control an Electronic Load to give me a constant power output.
I need to keep a constant power output on my electronic load. The voltage and more so the current will be dynamic in order to keep the power constant. I am new to Labview and am trying to write code to accomplish this task.
Re: which command I can use to exit from a subvi without exiting from labview in run-time?
In LabVIEW, go to the FIND EXAMPLES menu. View the bNew Event Handler.VI/b or the bOld Event Handler.VI/b and either of these will do if this is indeed what you are looking for... =0)
Re: Image acquisition using video capture card
Viji, The video capture card will be the device that you connect your image source to and that is responsible for acquiring the image that you want. Unfortunately National Instruments does not develop any image acquisition device that will acquire from a basic RC jack. We do have a board that will acquire images from an S-Video connection, so some customers can acquire images from high-end, commercial VCRs to our image acquisition board through an S-Video connection. Also, currently our IMAQ and Vision products are only supported and developed on the Windows platform, and we do not have IMAQ/Vision support for Linux. Because of this, you will not be able to use the IMAQ or Vision functions on a Linus machine, unless you can find or create a 3rd party driver that interfaces properly. Regards, Michael Applications Engineer
Upgrading LabView program from 3.0.1 to 6.1
Hi, I have a LabView program which was written and run in LabView Version 3.0.1. We are upgrading our test system to LabView 6.1 and would like to port this program over to the new environment. When I tried opening up the program in 6.1 I got a message saying the version the program was written in was too old to upgrade to 6.1. Is there a way of porting an older version lab view program to a newer one without reentering everything? Thanks in advance... Dan
Re: Programmatically retrieve Past versions of a control item
Your answer suggests even I change the structure, I can keep using the same datalog file. This definitely helps. I do have to remember (i.e. store) all the past versions (structures) in my program and use the correct one to retrieve the item it was saved in, don't I? Zuolan
Re: deletion of arrays during specific time intervals...how to get it working?
Henry, The VI which you posted is not executable, and doesn't make very much sense. A few tips: 1. Is this a SubVI? Or your main VI? If this is your main VI you should have an overall while loop which controls when the averages are taken. 2. You should use local variables instead of value property nodes, and you should generally use wires and shift registers in place of local variables. 3. What do you mean that you want to delete the array of peak values? Do you mean that you want to actually delete those valus from your original data or that you just don't need to use them any more? In LabVIEW it's not neccessary to delete an array after you use it, just don't use the wire again. You might want to look into buying a book or taking a class on LabVIEW programming, as I think that you may need to learn some more about dataflow programming. Regards, Ryan K.
Re: New to active X, why does this not work
I got this work with mpg, mp3, and wav files. what version of labview and windows are you running.
Re: Parallel access of database
Yes, the approach you use to opening a connection is exactly the approach to take to get around that problem. Not sure what to tell you about the other one except to maybe try it with a different DB. Regards, Ryan K.
Re: Upgrading LabView program from 3.0.1 to 6.1
Dan follow this link http://digital.ni.com/public.nsf/3efedde4322fef19862567740067f3cc/429e45271cfd683786256d87006b1eef?OpenDocument here is th eimportant part: To load a VI from LabVIEW 3.x or earlier, you must use the LabVIEW VI Conversion Kit, which is available free of charge from National Instruments. The part number of this kit for Windows and Macintosh is 776874-03. VIs from UNIX must be transferred to a Mac or PC where the VI can be converted to LabVIEW 4.0 and then transferred back to UNIX. The LabVIEW VI Conversion Kit is not available in the online catalog. Please contact the National Instruments Sales Department directly to request this free conversion kit. good luck Dan
Re: New to active X, why does this not work
I have 6.1 and XP. My partner tried running and got nothing. Then he ran an MP3 file, it worked, then the .wav file worked? HELP!!!
Re: Saving the Control Values on a Front Panel
What you need to is write a configuration file. There is a shipping example on how to do this called write configuration settings file. Joe
Re: New to active X, why does this not work
The wave file that I am trying to load is 90Mb. I just did a 30Mb wave file and it worked fine. Suggestions, anything I can do to make more robust?
Re: LabVIEW stores data to disk without being told to
Is it possible that the OS is increasing the swap file size (What is you OS?) due to increasing memory demands? Try setting a minimum swap file size in the OS configuration. You should pick a value for the minimum size slightly above the size after a few runs of the program. You might also want to carefully inspect your code to eliminate unnecessary extra data copies.
Re: Obtain Queue.vi error 2 after long execution, Labview 6.1
No, if I could simply wire the queue reference to both sections of code, I would have. That code is just the basic structure, I need/really, really prefer to use Obtain Queue.vi for the full program. Also, this is still growing and I need to figure out what is the problem for future development. I found the following on NI page Differences Between Queues in LabVIEW 6.1 and Previous Versions: ...for named queues, each call to Obtain Queue with the same name will result in a new refnum that points to the original queue. So I guess there is some Labview-set limit to the number of refnums in memory, since the computer still has 97% free. I will try using Release Queue.vi within the loop as well as at program termination and report back.
Re: Using windows dll
Crashing LabVIEW when calling external code is usually the way you know that some parameters are wrong. What function are you calling? may be I can give it a try here. All of the suggestions here are very valuable when calling external code. Make sure you have the right calling convetion, use C string and reserve the memory in LabVIEW beofre calling the dll. I hope this helps. Juan Carlos
Re: XY graph
Under LabVIEW Help, click Find Examples, then search for XY Graph. It shows examples of different types of plots. Les
Re: Autoscale Y axis
Stephan, Thanks for your comments, but I am afraid I do not follow your advice. In the property node, I cannot see any context menu. I previoulsy had several property nodes so that the user could either autoscale or set the max and the min manually. Could you please elaborate on your comment? Thanks. Karthik.
Re: Problems using DAQmx Channel Property Node in Labview
Hi Ian, I can run your VI with success when wiring the chanel names in directly. What is the incorrect result that you are seeing? What property node is failing you? What is the error and result from that node? Deborah
Re: HTML posts
Hi all Beeing a yahoo user, I am a guilty party. While I kind of know I was sending HTML email, I forgot It could be a problem for others. It is quite easy to switch back to text only email [in yahoo](select Plain instead of Colors and Graphics in the compose window). I will try to remember to do so from now on. Regards PJM --- Info-LabVIEW List Maintainer [EMAIL PROTECTED] wrote: At 10:53 +0200 6/2/04, Rolf Kalbermatter wrote: Would it be possible to not post with HTML to this mailing list as it is a text mailing list? The list software does it's best to strip all HTML from the mail. This is hard since people use incorrect HTML so there is no sure way to do this. The list is *supposed* to reject all mail that it can't strip the HTML from. Certain people have a problem sending non-HTML mail (Braindead AOL mailers for example have no way to do this). The rest are clueless about how to turn this feature off. I just looked thru the recent past set of messages in my inbox and only found one that had the x-flowed attribute though the mailer incorrectly marked the message content as text/plain. But I looked in the trash and my filters had dumped one Yahoo mail that had gotten thru. Again, it is hard to remove HTML on this free service. It had incorrect headers and listed it as multipart/alternative but did not have any multiparts. Sigh. Other than rejecting everyone from yahoo.com (that would simplify my life, they are most of the bad addresses that bounce) I don't have a good way of blocking it, but I will work on it. -Scott -- Dr. Scott Hannahs, National High Magnetic Field Lab Info-LabVIEW List Maintainer http://sthmac.magnet.fsu.edu/labview Subscribe: mailto://[EMAIL PROTECTED] Unsubscribe: mailto://[EMAIL PROTECTED] __ Do You Yahoo!? Tired of spam? Yahoo! Mail has the best spam protection around http://mail.yahoo.com
Re: VI hangs while attempting to save
Sorry, I don't have a solution, just a comment. A single VI of 1MB seems quite large and I wonder where all the bulk is coming from. It would be hard to believe it's all code. Could it be that all your indicators (arrays, graphs, charts, etc.) contain huge arrays as default vaules? It might be worth clearing all, followed by set current values to defaults before saving the VI. Go to File..VI properties..memory usage. What are the numbers for objects, code and data?
Re: Display the indicator bigger when the user clicks on it
For the first question, you probably should create a seperate subVI for each indicator. About (2). There are many ways to stop the loops in the subVIs (You seem to use a global variable). You could just use the numeric itself and test for a value that never can occur during normal runs (e.g. NaN, -Inf, or Inf, etc.), then, when you stop the main VI just write these to all the indicators and everything else will stop. (This can be useful during development. Once this VI is deployed in a production environment, stopping is probably not needed, just a sane shutdown of the entire application.)
Re: Autoscale Y axis
Dear Karthik, sorry, I was a bit unprecise! There is no context menu for the property node, but if you click right on the graph belongig to it on the front panel than you will get a context menu. There you have to disable auto scale for the y axis. This should be menu item under y axis or similar (unfortunate I have a german version of LabVIEW, so I'm not aware how the correct names of the menu items og the english version might be). Stephan
File size above 2 GB, is that possible in LabVIEW.
I want to stream data to disk for a long period, in the format waveform data type - my problem is that the data files tends to reach the limit of 2 GB. Is it possible to make files in LabVIEW greater than 2 GB ? My OS is Windows XP and the disk is NTFS formatted. I really appreciate your help on this one! Allan
Re: LabVIEW stores data to disk without being told to
Rolf, that seems to be the problem... I can see from the system monitor that Labview starts up with something like 14 or 15 MB assigned and then climbs up to around 400 MB when I start running the program. Once it gets to around 400 MB it seems to run fine. Do you have any quick hints for what you mean by inefficient wiring. The program is quite large and I am asking it to do a lot. Since I am not a programmer by trade I may have caused some problems there. As well, is there any way in Windows to assign a program a certain memory usage allotment. I looked around on the web but couldn't find anything. Since I am only running this program, If I can get it to allocate the amount of memory up front then I might as well try it?
Re: Display the indicator bigger when the user clicks on it
About question 1: I will have up to 10 or more indicators on the final fron panel of my main VI. I thought of making subVI for each indicator but would that be too many subVIs. I guess they are not that big so it doesn't take much memory. Regarding this topic of making subVIs can you remind what is the way of adding all those subVIs that my application calls into one library? Is that done during compiling into the actual application and then you just select all subVIs?...something like that I think. Thanks for everything. Regards, Pedja
Re: LabVIEW stores data to disk without being told to
Swapping memory is relatively fast unless the OS needs to constantly incremetally grow the swap file. Above, I have mentioned to make sure the swapfile does not need to be dynamically resized. Here is a relevant aplication note: a href= http://digital.ni.com/public.nsf/3efedde4322fef19862567740067f3cc/9c654bf862c049c786256cc4005ea4ad?OpenDocumentbHow Can Virtual Memory Help With Memory Issues in LabVIEW?/b/a An excellent writeup on issues related to dealing with large data sets is the following document: a href=http://zone.ni.com/devzone/conceptd.nsf/webmain/6A56C174EABA7BBD86256E58005D9712?opendocumentbManaging Large Data Sets in LabVIEW/b/a. This is certainly something you should read.
Basics - edge detect or software counter
I'm trying to build a basic counter in software - push a button and a number increments - with a while loop (or any other way). Can't get it to work. The loop clears and doesn't hold a boolean in a shift register when the enable is cleared so I can't single step it. This should be real easy stuff yet can't find any info anywhere, search for software counter comes up with nothing. Just using LabView, no hardware. Where is all the basic beginner stuff that would have this?
how to convert time (X-axis) from seconds to minutes
I have Graph indicator and I am trying to change the units of time axis (x) from seconds to minutes. I wrote the small VI that increments the voltage at the output of the power supply in steps of 100 V every 1 min. After each time interval of 1 minute passes by the voltage is incremented by 100V. The resulting plot looks like stairs going up. Since my time interval will always be fixed to 1 minute I wish I can change the x axis so that it is scaled in minutes instead of seconds. So let's say I wanna go from 1 to 20 minutes on x axis in increments of 1 minute. Is that possible? What are the options I have? Thanks, Pedja
RE: Bird's Eye View 1.5.0 Available
PJM wrote: Let me use this opportunity to mentioned that if anyone has ideas to improve upon this tool, please feel free to contact me. ... PJM It would be interesting to have this work remotely, or does it already do that? Very Nifty Utility, and almost as interesting for the Picture Control programming example as for the intended viewing functionality. Mike *** Michael C. Ashe Imaginatics Control Test Systems 11 Quinley Way Waterford, CT 06385 Phone: 860-444-2141 Cell: 860-961-0876 email: [EMAIL PROTECTED] ***
How to set the SE_SHUTDOWN_NAME privilege?
How do I set the SE_SHUTDOWN_NAME privilege so that I can execute ExitWindows on LabView 6.1 / Windows 2000? KnowledgeBase document 2CTJ76G4 says that a CIN is used to set the necessary privilege: what function / DLL? (The attachment to KB #2CTJ76G4 is for LV 7.0; I am running 6.1.)
