Mailman 3 August 2004 - SciPy-User

Re: [SciPy-user] gplt and xplt
by Gary Ruben Aug. 15, 2004

Aug. 15, 2004

David, I'd recommend you look (for mature cross platform packages for Python) at gnuplot.py, Matplotlib and, if you need certain plot types not supported by these, DISLIN (and disipyl). I've mucked around with others but have rejected them for one reason or other. Gary ----- Original Message ----- From: "David J. Grant" <david.grant(a)telus.net> Date: Wed, 11 Aug 2004 14:10:16 -0700 To: SciPy Users List <scipy-user(a)scipy.net>,Steve Schmerler <elcorto(a)gmx.net> Subject: Re: [SciPy-user] gplt and xplt > This is a HUGE problem with gplt. There is a long sleep command somewhere in > the code. This is necessary because when piping data to gnuplot some kind of > badness happens if you do it too fast. > > There are a ton of plotters for Python out there. Finding the right one is the > problem. The community really needs one that can do everything reliably, fast, > and on all platforms. Or a very robust wrapper which can call all sorts of > Python plotters. If anyone knows anything of use, please let me know. > > David -- ___________________________________________________________ Sign-up for Ads Free at Mail.com http://promo.mail.com/adsfreejump.htm

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Re: Question re: Building on FreeBSD
by William Blum Aug. 15, 2004

Aug. 15, 2004

Robert Kern wrote: --- python setup.py build_src build_clib -UHAVE_INVERSE_HYPERBOLIC build_ext -UHAVE_INVERSE_HYPERBOLIC build install I generally put all this gunk into a tiny shell script call "mybuild" and run that every time I need to rebuild SciPy. I hope this works. I have not tested it, not being on FreeBSD. --- Okay, that *almost* worked for me... I had to edit two files to replace 'malloc.h' with 'stdlib.h', and eliminated the first mention of HAVE_INVERSE_HYPERBOLIC from your suggested build command.... and it actually completed building. However, it failed 15 of the selftests. ( more info later, being called away from computer ). Thanks for your help. - Bill Blum

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fmin_l_bfgs_b problem
by bulatov＠cs.orst.edu Aug. 15, 2004

Aug. 15, 2004

Was anyone able to use fmin_l_bfgs_b optimizer successfully? When I run it with the same parameters as the fmin_bfgs example in the tutorial, I get the error: xopt = fmin_l_bfgs_b(log_likelihood, x0, fprime=log_likelihood_der) File "C:\Python23\Lib\site-packages\scipy\optimize\lbfgsb.py", line 174, in fm in_l_bfgs_bisave, dsave) error: failed in converting 7th argument `g' of _lbfgsb.setulb to C/Fortran array BTW, are there searchable archives of this list somewhere? Yaroslav

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Question re: Building on FreeBSD
by William Blum Aug. 14, 2004

Aug. 14, 2004

Okay, count me as another person interested in getting SciPy working on FreeBSD... Anyways-- I've run into a problem, error message included below: --- compling C sources cc options: '-fno-strict-aliasing -DNDEBUG -O -pipe -march=pentium4 -D_THREAD_SA FE -DTHREAD_STACK_SIZE=0x100000 -fPIC' compile options: '-DUSE_MCONF_LITE_LE -I/usr/local/include/python2.3 -c' cc: scipy_core/scipy_base/fastumathmodule.c In file included from scipy_core/scipy_base/fastumathmodule.c:27: scipy_core/scipy_base/fastumath_unsigned.inc:2784: error: `acosh' undeclared her e (not in a function) scipy_core/scipy_base/fastumath_unsigned.inc:2784: error: initializer element is not constant (rest deleted) ---- I went to the mailing archives first, found a message from Pearu suggesting the use of -UHAVE_INVERSE_HYPERBOLIC to solve this... My question is: where on earth do I need to put that in the setup files so that it gets appended as an option to the compiler? Thanks for your help. -Bill Blum

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Another Question re: FreeBSD ( was Question re: Building on FreeBSD )
by William Blum Aug. 14, 2004

Aug. 14, 2004

Okay, after even more googling, I found matt (at) hotdispatch (dot) com's solution of commenting out the #ifdef for HAVE_INVERSE_HYPERBOLIC. My install got a little bit farther this time... ----error excerpt below---- compile options: '-I/usr/local/include/python2.3 -c' cc: scipy_core/scipy_base/_compiled_base.c scipy_core/scipy_base/_compiled_base.c:753:28: _scipy_mapping.c: No such file or directory ---- ---- Oh, and for the record: I'm using a tarball from the CVS sources.

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Re: [SciPy-user] gplot documentation
by Alan G Isaac Aug. 14, 2004

Aug. 14, 2004

On Sat, 14 Aug 2004, Jeremy Martin apparently wrote: > Im new to using Scipy and was wondering where to look for > documentation on gplot. Ive looked at the gnuplot webpage but havent > found any sections that resemble the functions in the plotting > tutorial. http://www.scipy.org/documentation/plottutorial.html hth, Alan Isaac

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Re: Re[2]: [SciPy-user] gplt and xplt
by Gary Ruben Aug. 14, 2004

Aug. 14, 2004

Alan, just a comment on your other point - > Just to note on the particular issue raised by Gary: > gnuplot.py faces exactly the same problem as gplt but relies > on the user to implement apprpriate delays. What is unclear > from the descriptions that I've read is whether this is a > gnuplot problem or a problem with pipes under Windows. > If the former, do the gnuplot developers know about it? I always assumed this was a Windows pipe-system problem. I have experienced problems in other arenas with pipes under Win98 but not under Win2k in which the Windows pipe system changed. My experience of flakiness with pipes driving gnuplot also followed this pattern. ie. very occasionally, I get misbehaviour (broken plots) under Win98 but I haven't seen it under Win2k. When I experience a broken plot, I just re-run the script and it's typically fine. I don't use it interactively from Python. Gary -- ___________________________________________________________ Sign-up for Ads Free at Mail.com http://promo.mail.com/adsfreejump.htm

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Re: Re[2]: [SciPy-user] gplt and xplt
by Gary Ruben Aug. 14, 2004

Aug. 14, 2004

Biggles was the first Python plotting solution I tried to install but it was quite a while ago. I couldn't get it working under Windows so it failed my cross-platform requirement. I haven't tried the more recent version. Gary ----- Original Message ----- From: Alan G Isaac <aisaac(a)american.edu> Date: Thu, 12 Aug 2004 10:38:45 -0400 (Eastern Daylight Time) To: SciPy Users List <scipy-user(a)scipy.net> Subject: Re[2]: [SciPy-user] gplt and xplt > On Thu, 12 Aug 2004, Gary Ruben apparently wrote: > > I'd recommend you look (for mature cross platform packages > > for Python) at gnuplot.py, Matplotlib and, if you need > > certain plot types not supported by these, DISLIN (and > > disipyl). > > Just to note on the particular issue raised by Gary: > gnuplot.py faces exactly the same problem as gplt but relies > on the user to implement apprpriate delays. What is unclear > from the descriptions that I've read is whether this is a > gnuplot problem or a problem with pipes under Windows. > If the former, do the gnuplot developers know about it? > > > I've mucked around with others but have rejected them for > > one reason or other. > > Can you summarize your experience with biggles? > http://biggles.sourceforge.net/ > > Thanks, > Alan Isaac -- ___________________________________________________________ Sign-up for Ads Free at Mail.com http://promo.mail.com/adsfreejump.htm

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gplot documentation
by Jeremy Martin Aug. 14, 2004

Aug. 14, 2004

List, Im new to using Scipy and was wondering where to look for documentation on gplot. Ive looked at the gnuplot webpage but havent found any sections that resemble the functions in the plotting tutorial. Thanks, Jeremy

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Windows - Symbols Character
by Aaron Williams Aug. 13, 2004

Aug. 13, 2004

My question is about python' s character assinments in a Windows 2000. I am in the process of automating oneof my programs, but because I am using Windows I am having a problem with the backslash character. Here is an example: ############################################################# from scipy import * io.array_import #open Fortran Binary array i = 1001 imax = 1142 U = '\O256a' j = imax + 1 while i < j: c = str(i) a = U + c FilePath = 'D:\FFTstuff\netcdf\Newdata\O256a' + U + c + '.bin' fid=io.fopen(FilePath,'r') ________________________________________ Traceback (most recent call last): File "D:\FFTstuff\netcdf\Newdata2\O256a\FFT_converter256O.py", line 21, in ? fid=io.fopen(FilePath,'r') File "D:\PROGRA~1\PYTHON2.3\Lib\site-packages\scipy\io\mio.py", line 91, in __init__ self.__dict__['fid'] = open(file_name,permission) IOError: [Errno 2] No such file or directory: 'D:\\FFTstuff\netcdf\\Newdata2\\O256a\\O256a1001.bin' ################################################################### The file does exist I just need to get rid of the extra backslashes. Do you have any suggestions on how to fix this problem. --------------------------------- Do you Yahoo!? New and Improved Yahoo! Mail - 100MB free storage!

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