[sage-support] Re: Cannot upgrade from 4.5.2 to 4.5.3
Hi Jan, Yes i do use a proxyserver. I did make some changes in a couple of *.conf files as suggested by the CentOS team but it seems that it is not yet complete for sage to upgrade flawlessly. I'll browse some more and try to rectify the problem. I'll report failures or successes soon. Thanks and bye. On Sep 13, 10:44 am, Mitesh Patel qed...@gmail.com wrote: On 09/13/2010 12:28 AM, Jan Groenewald wrote: Hi Mitesh Does your firefox have a proxy set up under Edit Preferences Advanced Network ? Good idea! Samrat's upgrade problem may well stem from the local networking setup. Can you check the firewall, too? -- To post to this group, send email to sage-support@googlegroups.com To unsubscribe from this group, send email to sage-support+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/sage-support URL: http://www.sagemath.org
Re: [sage-support] Re: Cannot upgrade from 4.5.2 to 4.5.3
Hi On Sun, Sep 12, 2010 at 11:00:21PM -0700, samrat wrote: Yes i do use a proxyserver. I did make some changes in a couple of *.conf files as suggested by the CentOS team but it seems that it is not yet complete for sage to upgrade flawlessly. I'll browse some more and try to rectify the problem. I'll report failures or successes soon. http://docs.python.org/library/urllib.html : The urlopen() function works transparently with proxies which do not require authentication. In a Unix or Windows environment, set the http_proxy, or ftp_proxy environment variables to a URL that identifies the proxy server before starting the Python interpreter. For example (the '%' is the command prompt): % http_proxy=http://www.someproxy.com:3128; % export http_proxy % python Replace 'someproxy' with your real settings. The last python would be 'sage -upgrade' in your case. I advise adding a trailing slash (/) to the http_proxy setting. I have seen apps fail due to it not being there. regards, Jan -- .~. /V\ Jan Groenewald /( )\www.aims.ac.za ^^-^^ -- To post to this group, send email to sage-support@googlegroups.com To unsubscribe from this group, send email to sage-support+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/sage-support URL: http://www.sagemath.org
[sage-support] Machine Learning Py
Hello, Do you know if there are any plans to integrate the mlpy library (https://mlpy.fbk.eu/) in sage? Thanks, Pere -- To post to this group, send email to sage-support@googlegroups.com To unsubscribe from this group, send email to sage-support+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/sage-support URL: http://www.sagemath.org
Re: [sage-support] Machine Learning Py
Hi Pere, On Mon, Sep 13, 2010 at 5:49 PM, Pere Quintana Seguí p...@illadelaire.org wrote: Hello, Do you know if there are any plans to integrate the mlpy library (https://mlpy.fbk.eu/) in sage? I'm not aware of any such plans. But a few months ago, there was some discussion about having support vector machine functionalities in Sage. If you would like to use mlpy [1] from within Sage, you could produce an optional package or a contributed package. A contributed package (otherwise known as an experimental package) is something you produce and maintain yourself. The Sage project take no responsibility in maintaining a contributed package. However, we offer hosting space for your contributed spkg. An optional package needs to pass some minimum requirements in order for it to become an optional package. For example, an optional spkg must be tested and work on most of the operating systems that Sage runs on. The Sage project takes minimum responsibility vis-a-vis maintaining an optional package. That is, we don't do all the work of maintaining an optional package; you need to commit yourself to sharing that task. A reason is that there are many standard packages currently distributed by default with Sage, and the effort required to maintain those standard spkg's is huge. There are not enough human resource and volunteers to maintain the standard packages, so the Sage project needs to prioritize its effort. If you would like to produce and maintain an optional or contributed spkg, we can provide hosting space. [1] https://mlpy.fbk.eu -- Regards Minh Van Nguyen -- To post to this group, send email to sage-support@googlegroups.com To unsubscribe from this group, send email to sage-support+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/sage-support URL: http://www.sagemath.org
[sage-support] Operations for analysis and design of feedback control systems
Hello I am not familiar with SAGE therefore my inexperienced question: Is there support for operations for analysis and design of feedback control systems, kind of MATLAB Control Systems Toolbox? Up to now I found only python-control package https://sourceforge.net/apps/mediawiki/python-control and some extension http://linux3.dti.supsi.ch/~bucher/ Does SAGE provide something control engineering purposes? Thank you! Regards, pepe -- To post to this group, send email to sage-support@googlegroups.com To unsubscribe from this group, send email to sage-support+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/sage-support URL: http://www.sagemath.org
Re: [sage-support] Re: Problem doing symbolic computations (bug in Pynac ?)
Hi Jean-Pierre, On Mon, 13 Sep 2010 04:58:00 -0700 (PDT) Jean-Pierre Flori jpfl...@gmail.com wrote: I've got some other questions: These should be on a separate thread, on sage-devel or pynac-devel. - Sage and pynac do not realize that 2^(-b_0) and (2^b_0)^(-1) are equal. I guess there is no canonical way of expanding 2^(a*b) into something else, but it could be a good idea doing it when a or b is an integer and the other one a variable ? I don't understand your suggestion. Are you saying we should * expand 2^(-b) to (2^b)^(-1) or * simplify (2^b)^(-1) to 2^(-b)? Apart from a few simple modifications, e.g., exp(a)^b - exp(a*b) when possible, pynac keeps the automatic evaluation rules from GiNaC. These operations effect the performance of the library quite a bit. We should be careful before adding more of them, and perhaps consult the GiNaC developers in the process. - Should symbolic sums be implemented into pynac (at some point...) to avoid calling Maxima ? They should be implemented in Sage. I don't think this requires any modification at the C++ level in the pynac library. Actually, I am working on this right now. By the way calling symbolic_sum(1,x,0,b_0) gives me an error whereas calling sum(1,x,0,b_0) does not. This is the difference between sage.misc.functional.symbolic_sum and sage.calculus.calculus.symbolic_sum. The latter tries to convert the output received from maxima to the parent of the given expression. In your example, this is ZZ. The conversion fails of course. The wrapper sage.misc.functional.symbolic_sum first converts the first argument to a symbolic expression, which prevents the error. When we move to new code in sage/symbolic/summation/* (which is not in the library yet), things will be much cleaner. Cheers, Burcin -- To post to this group, send email to sage-support@googlegroups.com To unsubscribe from this group, send email to sage-support+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/sage-support URL: http://www.sagemath.org
[sage-support] Re: Machine Learning Py
Most of my needs in this area are taken care of by the support for the Cluster library in the optional package biopython, but since I have some interest I tried to make a preliminary spkg: http://sage.math.washington.edu/home/mhampton/MLPY-2.2.1.p0.spkg Unfortunately although GSL is a standard component of Sage, its header files weren't picked up correctly for some reason. I'm not sure who to ask about this since as far as I know GSL isn't a dependency of other Sage components. -Marshall Hampton On Sep 13, 3:12 am, Minh Nguyen nguyenmi...@gmail.com wrote: Hi Pere, On Mon, Sep 13, 2010 at 5:49 PM, Pere Quintana Seguí p...@illadelaire.org wrote: Hello, Do you know if there are any plans to integrate the mlpy library (https://mlpy.fbk.eu/) in sage? I'm not aware of any such plans. But a few months ago, there was some discussion about having support vector machine functionalities in Sage. If you would like to use mlpy [1] from within Sage, you could produce an optional package or a contributed package. A contributed package (otherwise known as an experimental package) is something you produce and maintain yourself. The Sage project take no responsibility in maintaining a contributed package. However, we offer hosting space for your contributed spkg. An optional package needs to pass some minimum requirements in order for it to become an optional package. For example, an optional spkg must be tested and work on most of the operating systems that Sage runs on. The Sage project takes minimum responsibility vis-a-vis maintaining an optional package. That is, we don't do all the work of maintaining an optional package; you need to commit yourself to sharing that task. A reason is that there are many standard packages currently distributed by default with Sage, and the effort required to maintain those standard spkg's is huge. There are not enough human resource and volunteers to maintain the standard packages, so the Sage project needs to prioritize its effort. If you would like to produce and maintain an optional or contributed spkg, we can provide hosting space. [1]https://mlpy.fbk.eu -- Regards Minh Van Nguyen -- To post to this group, send email to sage-support@googlegroups.com To unsubscribe from this group, send email to sage-support+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/sage-support URL: http://www.sagemath.org
[sage-support] Re: Problem doing symbolic computations (bug in Pynac ?)
When we move to new code in sage/symbolic/summation/* (which is not in the library yet), things will be much cleaner. Can you give a ticket # for this? I would be interested in looking at this. - kcrisman -- To post to this group, send email to sage-support@googlegroups.com To unsubscribe from this group, send email to sage-support+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/sage-support URL: http://www.sagemath.org
[sage-support] continued_fraction returns nothing
In certain cases I get nothing from the continued_fraction function in the latest Sage version: -- | Sage Version 4.5.3, Release Date: 2010-09-04 | | Type notebook() for the GUI, and license() for information.| -- sage: a=sqrt(2).n()*sqrt(2) sage: continued_fraction(a) [] In version 4.5.2 the output was [2, 2251799813685248] Best regards, Håkan Granath -- To post to this group, send email to sage-support@googlegroups.com To unsubscribe from this group, send email to sage-support+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/sage-support URL: http://www.sagemath.org
[sage-support] Re: installation of Sage
All right, I run that utility at least once a week, so that should e fine. On 12 Sep., 23:14, Mitesh Patel qed...@gmail.com wrote: On 09/12/2010 09:18 AM, Michael wrote: On 12 Sep., 00:19, Mitesh Patel qed...@gmail.com wrote: Michael, is your system fully updated to the latest stable packages for your openSUSE version? Also, how much RAM does your computer have? I am afraid I don't know what stable packages are. My computer has got 987 MB RAM. I'm not familar with the openSUSE distribution, but your installation should have a semi-automatic update utility that checks openSUSE servers (or mirrors) for newer packages (with bug and security fixes, etc.) than you have on your system and installs them. I'm just asking whether you've run this utility recently. -- To post to this group, send email to sage-support@googlegroups.com To unsubscribe from this group, send email to sage-support+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/sage-support URL: http://www.sagemath.org
[sage-support] Obtaining data from a computation in process
Hello! I have a computation running in Sage. It is a search of more or less the following form: Let S be an empty set. For i in some interval: Check some property for i If i satisfies the property: add i to the set S. I now realise I should have said print i rather than add i to the set S. Originally I thought it was a good idea because it was easy to manipulate the output once the search had been completed if it was in a set. However, now that the search has yet to conclude after a week or so I wonder if there is a simple way to check what is currently in S? Is there any way to obtain the set S while the process continues to run? I'd even be interested to learn if there is a way to terminate the process and check what values of i have gathered in S up until termination. Any ideas? Or is it a lose cause? Thanks very much. -- To post to this group, send email to sage-support@googlegroups.com To unsubscribe from this group, send email to sage-support+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/sage-support URL: http://www.sagemath.org
Re: [sage-support] Obtaining data from a computation in process
On 13/09/2010 20:01, Nick wrote: Hello! I have a computation running in Sage. It is a search of more or less the following form: Let S be an empty set. For i in some interval: Check some property for i If i satisfies the property: add i to the set S. I now realise I should have said print i rather than add i to the set S. Originally I thought it was a good idea because it was easy to manipulate the output once the search had been completed if it was in a set. However, now that the search has yet to conclude after a week or so I wonder if there is a simple way to check what is currently in S? Is there any way to obtain the set S while the process continues to run? I'd even be interested to learn if there is a way to terminate the process and check what values of i have gathered in S up until termination. Any ideas? Or is it a lose cause? Hi It depends on precisely what form your code takes. If you're running the loop at the top level with S as a global variable then you should be able to do ctrl-c to terminate the computation and then look at S or any other global variable. If your computations happening inside a function call then I don't know of any way round it. HTH Alastair Thanks very much. -- To post to this group, send email to sage-support@googlegroups.com To unsubscribe from this group, send email to sage-support+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/sage-support URL: http://www.sagemath.org
Re: [sage-support] Obtaining data from a computation in process
On Mon, Sep 13, 2010 at 12:41 PM, Alastair Irving alastair.irv...@sjc.ox.ac.uk wrote: It depends on precisely what form your code takes. If you're running the loop at the top level with S as a global variable then you should be able to do ctrl-c to terminate the computation and then look at S or any other global variable. If your computations happening inside a function call then I don't know of any way round it. If your set S is occurring in a (Python) function call and you are at the Sage command-line, then you can do Ctrl-C to stop the computation, type in %debug to enter the debugger, enter u until you move up the call stack until you are at the place where your S is defined. Then, you can do print S to have it print the set. There may be trickier ways of manipulating the stack frame, but I don't know offhand what they are. --Mike -- To post to this group, send email to sage-support@googlegroups.com To unsubscribe from this group, send email to sage-support+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/sage-support URL: http://www.sagemath.org
[sage-support] Re: Obtaining data from a computation in process
Thanks to you both. It is a relief to know there is a solution. However, ... I just pressed Ctrl-c and ^C appeared. I pressed enter but I still didn't return to the sage: command prompt. In my ignorance I even typed out ctrl-c but the black block is still flashing... In case it wasn't transparent, I'm a newbie! On Sep 13, 8:41 pm, Alastair Irving alastair.irv...@sjc.ox.ac.uk wrote: On 13/09/2010 20:01, Nick wrote: Hello! I have a computation running in Sage. It is a search of more or less the following form: Let S be an empty set. For i in some interval: Check some property for i If i satisfies the property: add i to the set S. I now realise I should have said print i rather than add i to the set S. Originally I thought it was a good idea because it was easy to manipulate the output once the search had been completed if it was in a set. However, now that the search has yet to conclude after a week or so I wonder if there is a simple way to check what is currently in S? Is there any way to obtain the set S while the process continues to run? I'd even be interested to learn if there is a way to terminate the process and check what values of i have gathered in S up until termination. Any ideas? Or is it a lose cause? Hi It depends on precisely what form your code takes. If you're running the loop at the top level with S as a global variable then you should be able to do ctrl-c to terminate the computation and then look at S or any other global variable. If your computations happening inside a function call then I don't know of any way round it. HTH Alastair Thanks very much. -- To post to this group, send email to sage-support@googlegroups.com To unsubscribe from this group, send email to sage-support+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/sage-support URL: http://www.sagemath.org
[sage-support] Re: Obtaining data from a computation in process
Thanks to you both. It is a relief to know there is a solution. However, ... I just pressed Ctrl-c and ^C appeared. I pressed enter but I still didn't return to the sage: command prompt. In my ignorance I even typed out ctrl-c but the black block is still flashing... In case it wasn't transparent, I'm a newbie! On Sep 13, 8:41 pm, Alastair Irving alastair.irv...@sjc.ox.ac.uk wrote: On 13/09/2010 20:01, Nick wrote: Hello! I have a computation running in Sage. It is a search of more or less the following form: Let S be an empty set. For i in some interval: Check some property for i If i satisfies the property: add i to the set S. I now realise I should have said print i rather than add i to the set S. Originally I thought it was a good idea because it was easy to manipulate the output once the search had been completed if it was in a set. However, now that the search has yet to conclude after a week or so I wonder if there is a simple way to check what is currently in S? Is there any way to obtain the set S while the process continues to run? I'd even be interested to learn if there is a way to terminate the process and check what values of i have gathered in S up until termination. Any ideas? Or is it a lose cause? Hi It depends on precisely what form your code takes. If you're running the loop at the top level with S as a global variable then you should be able to do ctrl-c to terminate the computation and then look at S or any other global variable. If your computations happening inside a function call then I don't know of any way round it. HTH Alastair Thanks very much. -- To post to this group, send email to sage-support@googlegroups.com To unsubscribe from this group, send email to sage-support+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/sage-support URL: http://www.sagemath.org
[sage-support] Re: Obtaining data from a computation in process
Sorry, I just needed to be a little patient. I eventually returned to the Sage command prompt. Typed S and got back an empty set (I know it wouldn't have been completely empty). I tried the debug suggestion by Mike but that didn't seem to work. I've resigned myself that this was a failed attempt and will start again this time using the print command. Thanks for your help. On Sep 13, 9:29 pm, Nick aroy...@gmail.com wrote: Thanks to you both. It is a relief to know there is a solution. However, ... I just pressed Ctrl-c and ^C appeared. I pressed enter but I still didn't return to the sage: command prompt. In my ignorance I even typed out ctrl-c but the black block is still flashing... In case it wasn't transparent, I'm a newbie! On Sep 13, 8:41 pm, Alastair Irving alastair.irv...@sjc.ox.ac.uk wrote: On 13/09/2010 20:01, Nick wrote: Hello! I have a computation running in Sage. It is a search of more or less the following form: Let S be an empty set. For i in some interval: Check some property for i If i satisfies the property: add i to the set S. I now realise I should have said print i rather than add i to the set S. Originally I thought it was a good idea because it was easy to manipulate the output once the search had been completed if it was in a set. However, now that the search has yet to conclude after a week or so I wonder if there is a simple way to check what is currently in S? Is there any way to obtain the set S while the process continues to run? I'd even be interested to learn if there is a way to terminate the process and check what values of i have gathered in S up until termination. Any ideas? Or is it a lose cause? Hi It depends on precisely what form your code takes. If you're running the loop at the top level with S as a global variable then you should be able to do ctrl-c to terminate the computation and then look at S or any other global variable. If your computations happening inside a function call then I don't know of any way round it. HTH Alastair Thanks very much. -- To post to this group, send email to sage-support@googlegroups.com To unsubscribe from this group, send email to sage-support+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/sage-support URL: http://www.sagemath.org
Re: [sage-support] continued_fraction returns nothing
On 13/09/2010 17:31, Håkan Granath wrote: In certain cases I get nothing from the continued_fraction function in the latest Sage version: -- | Sage Version 4.5.3, Release Date: 2010-09-04 | | Type notebook() for the GUI, and license() for information.| -- sage: a=sqrt(2).n()*sqrt(2) sage: continued_fraction(a) [] Try doing continued_fraction(a,bits=100) This solves the problem for me. I believe the issue is that with the default precision it doesn't know if the number is less than or greater than 2, so it can't determine the first quotient. the number 100 was fairly arbitrary, the default I think is 52. HTH Alastair In version 4.5.2 the output was [2, 2251799813685248] Best regards, Håkan Granath -- To post to this group, send email to sage-support@googlegroups.com To unsubscribe from this group, send email to sage-support+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/sage-support URL: http://www.sagemath.org
Re: [sage-support] Re: continued_fraction returns nothing
On Mon, Sep 13, 2010 at 1:30 PM, Marshall Hampton hampto...@gmail.com wrote: I am guessing this is an indirect effect from this patch: http://trac.sagemath.org/sage_trac/ticket/8017 but I am not sure. If you do continued_fraction(N(a)) you get the same answer as before, but I would say this is a bug that shouldn't need a workaround. Alastair correctly deduced the issue that it can't tell if the number is less than or greater than 2, what should it do here? On Sep 13, 11:31 am, Håkan Granath hakan.gran...@googlemail.com wrote: In certain cases I get nothing from the continued_fraction function in the latest Sage version: -- | Sage Version 4.5.3, Release Date: 2010-09-04 | | Type notebook() for the GUI, and license() for information. | -- sage: a=sqrt(2).n()*sqrt(2) sage: continued_fraction(a) [] In version 4.5.2 the output was [2, 2251799813685248] Which was wrong. - Robert -- To post to this group, send email to sage-support@googlegroups.com To unsubscribe from this group, send email to sage-support+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/sage-support URL: http://www.sagemath.org
[sage-support] continued_fraction returns nothing
In certain cases I get nothing from the continued_fraction function in the latest Sage version: -- | Sage Version 4.5.3, Release Date: 2010-09-04 | | Type notebook() for the GUI, and license() for information.| -- sage: a=sqrt(2).n()*sqrt(2) sage: continued_fraction(a) [] In version 4.5.2 the output was [2, 2251799813685248] the reason is that the 4.5.2 result was wrong, see http://trac.sagemath.org/sage_trac/ticket/8017. You get no partial quotient because with the default precision of 53 bits, it is not possible to *correctly* deduce a single partial quotient, because a is very close to 2. You have to increase the precision: sage: continued_fraction(a, bits=100) [2] sage: continued_fraction(a, bits=150) [2, 7314423575030504, 1, 83, 1, 2, 1, 108, 1, 20] Paul Zimmermann -- To post to this group, send email to sage-support@googlegroups.com To unsubscribe from this group, send email to sage-support+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/sage-support URL: http://www.sagemath.org
Re: [sage-support] Re: installation of Sage
On 09/13/2010 01:57 PM, Michael wrote: sqlite-3.6.22 [...] bash: symbol lookup error: bash: undefined symbol: rl_filename_rewrite_hook [...] I tired to update bash, but it doesn't semm to make any difference. Just to be sure: Did you try cd SAGE_ROOT mv local/lib/*readline* /path/to/some/temp/dir with the binary Sage distribution? You could also try this in the compilation from scratch; run make again to continue the build. The Sage SQLite package (and other packages) depends on the Sage Readline package. We may see the bash error here because this is where your system's bash first finds a newly-built but incompatible Readline library under SAGE_ROOT. On 12 Sep., 23:34, Mitesh Patel qed...@gmail.com wrote: On 09/12/2010 09:16 AM, Michael wrote: On 12 Sep., 00:15, John H Palmieri jhpalmier...@gmail.com wrote: Have you tried building from the source distribution? Download it, unpack the tar file, and type make. Then wait a few hours. (I suppose there may be some incompatibility between the binary distribution and your system.) I tried what you said, but there occured an error again. I'll post the relevant lines below. I tired to open the subshell and debug the program, but that didn't work either. There seems to be a missing .py-file or something, I do not fully understand what I get there. I hope you can help me to fix that. Thanks! Here the command line output from the occurance of the error on: Could you give us a link to SAGE_ROOT/spkg/logs/sqlite-3.6.22.log ? ./sage -docbuild all html 21 | tee -a dochtml.log python: can't open file '/home/michael/Downloads/sage-4.5.3/devel/sage/ doc/common/builder.py': [Errno 2] No such file or directory The builder.py error here is secondary. We're tracking this problem at http://trac.sagemath.org/sage_trac/ticket/9799 mich...@linux-pu35:~/Downloads/sage-4.5.3 cd '/home/michael/Downloads/ sage-4.5.3/spkg/build/sqlite-3.6.22' '/home/michael/Downloads/ sage-4.5.3/sage' -sh Starting subshell with Sage environment variables set. Be sure to exit when you are done and do not do anything with other copies of Sage! Bypassing shell configuration files ... bash: symbol lookup error: bash: undefined symbol: rl_filename_rewrite_hook According to http://forums.opensuse.org/english/get-help-here/pre-release-beta/433... you may need to update bash. I think you can check for updates with YaST: http://en.opensuse.org/YaST_Software_Management Exited Sage subshell. mich...@linux-pu35:~/Downloads/sage-4.5.3/spkg/build/sqlite-3.6.22 -- To post to this group, send email to sage-support@googlegroups.com To unsubscribe from this group, send email to sage-support+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/sage-support URL: http://www.sagemath.org
