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From: Gideon S. <gr...@co...> - 2008-04-12 18:41:45
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For some reason when trying to save in PNG format on OS X 10.5.2, a window pops up with the error: Matplotlib backend_wx error cannot return std::string from Unicode object This is with the simple scipy demo at http://www.scipy.org/Cookbook/OptimizationDemo1 Gideon Simpson Department of Applied Physics & Applied Mathematics Columbia University gr...@co... |
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From: Joshua L. <dis...@gm...> - 2008-04-13 14:35:18
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Are you sure you built pylab correctly? See if you can find something suspicious in the build dialog. I had this error once a long time ago, but at some point since then a rebuild of everything fixed it. In the mean time, using savefig will still work even if the GUI button doesn't. Josh On Sat, Apr 12, 2008 at 11:41 AM, Gideon Simpson <gr...@co...> wrote: > For some reason when trying to save in PNG format on OS X 10.5.2, a > window pops up with the error: > > Matplotlib backend_wx error > cannot return std::string from Unicode object > > > This is with the simple scipy demo at http://www.scipy.org/Cookbook/OptimizationDemo1 > > > Gideon Simpson > Department of Applied Physics & Applied Mathematics > Columbia University > gr...@co... > > > ------------------------------------------------------------------------- > This SF.net email is sponsored by the 2008 JavaOne(SM) Conference > Don't miss this year's exciting event. There's still time to save $100. > Use priority code J8TL2D2. > http://ad.doubleclick.net/clk;198757673;13503038;p?http://java.sun.com/javaone > _______________________________________________ > Matplotlib-users mailing list > Mat...@li... > https://lists.sourceforge.net/lists/listinfo/matplotlib-users > |
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From: Gideon S. <gr...@co...> - 2008-04-13 22:13:04
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I don't see any error when I run python setup.py build for matplotlib. It seems to identify everything it needs. -gideon On Apr 13, 2008, at 10:35 AM, Joshua Lippai wrote: > Are you sure you built pylab correctly? See if you can find something > suspicious in the build dialog. I had this error once a long time ago, > but at some point since then a rebuild of everything fixed it. In the > mean time, using savefig will still work even if the GUI button > doesn't. > > Josh > > On Sat, Apr 12, 2008 at 11:41 AM, Gideon Simpson > <gr...@co...> wrote: >> For some reason when trying to save in PNG format on OS X 10.5.2, a >> window pops up with the error: >> >> Matplotlib backend_wx error >> cannot return std::string from Unicode object >> >> >> This is with the simple scipy demo at http://www.scipy.org/Cookbook/OptimizationDemo1 >> >> >> Gideon Simpson >> Department of Applied Physics & Applied Mathematics >> Columbia University >> gr...@co... >> >> >> ------------------------------------------------------------------------- >> This SF.net email is sponsored by the 2008 JavaOne(SM) Conference >> Don't miss this year's exciting event. There's still time to save >> $100. >> Use priority code J8TL2D2. >> http://ad.doubleclick.net/clk;198757673;13503038;p?http://java.sun.com/javaone >> _______________________________________________ >> Matplotlib-users mailing list >> Mat...@li... >> https://lists.sourceforge.net/lists/listinfo/matplotlib-users >> |
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From: Joshua L. <dis...@gm...> - 2008-04-14 00:41:47
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I know I had some matplotlib trouble in terms of compiling on OS X Leopard before I changed the Makefile inside /Library/Frameworks/Python.framework/Versions/Current/lib/python2.5/config/ If you're on an Intel Mac, try downloading the beta Apple GCC 4.2 from http://developer.apple.com and alter the Makefile so that CC and CXX are set to /usr/bin/gcc-4.2 and /usr/bin/g++-4.2 respectively. Also remove the flag "-arch ppc" from both the BASEFLAGS and LDFLAGS sections, and remove "-Wno-long-double" flag from the BASEFLAGS section. This assumes you're using the MacPython installation of Python and not the standard one provided by Apple. I personally wouldn't recommend using the standard Apple installation because a lot of modules assume you have the Python Framework in /Library/Frameworks/ due to that being the de facto standard set by MacPython and ActiveState Python. In addition, the MacPython instalation provides Python 2.5.2, not just 2.5.1. Matplotlib aside, you might want to make sure you installed the Unicode version of wxWidgets, and reinstall it if necessary. Josh On Sun, Apr 13, 2008 at 3:12 PM, Gideon Simpson <gr...@co...> wrote: > I don't see any error when I run python setup.py build for matplotlib. It > seems to identify everything it needs. > -gideon > > > > On Apr 13, 2008, at 10:35 AM, Joshua Lippai wrote: > > > > Are you sure you built pylab correctly? See if you can find something > > suspicious in the build dialog. I had this error once a long time ago, > > but at some point since then a rebuild of everything fixed it. In the > > mean time, using savefig will still work even if the GUI button > > doesn't. > > > > Josh > > > > On Sat, Apr 12, 2008 at 11:41 AM, Gideon Simpson <gr...@co...> > wrote: > > > > > For some reason when trying to save in PNG format on OS X 10.5.2, a > > > window pops up with the error: > > > > > > Matplotlib backend_wx error > > > cannot return std::string from Unicode object > > > > > > > > > This is with the simple scipy demo at > http://www.scipy.org/Cookbook/OptimizationDemo1 > > > > > > > > > Gideon Simpson > > > Department of Applied Physics & Applied Mathematics > > > Columbia University > > > gr...@co... > > > > > > > > > > ------------------------------------------------------------------------- > > > This SF.net email is sponsored by the 2008 JavaOne(SM) Conference > > > Don't miss this year's exciting event. There's still time to save $100. > > > Use priority code J8TL2D2. > > > > http://ad.doubleclick.net/clk;198757673;13503038;p?http://java.sun.com/javaone > > > _______________________________________________ > > > Matplotlib-users mailing list > > > Mat...@li... > > > https://lists.sourceforge.net/lists/listinfo/matplotlib-users > > > > > > > > > > |
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From: Joshua L. <dis...@gm...> - 2008-04-14 00:42:35
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wxPython, rather. Josh On Sun, Apr 13, 2008 at 5:41 PM, Joshua Lippai <dis...@gm...> wrote: > I know I had some matplotlib trouble in terms of compiling on OS X > Leopard before I changed the Makefile inside > > /Library/Frameworks/Python.framework/Versions/Current/lib/python2.5/config/ > > If you're on an Intel Mac, try downloading the beta Apple GCC 4.2 from > http://developer.apple.com and alter the Makefile so that CC and CXX > are set to /usr/bin/gcc-4.2 and /usr/bin/g++-4.2 respectively. Also > remove the flag "-arch ppc" from both the BASEFLAGS and LDFLAGS > sections, and remove "-Wno-long-double" flag from the BASEFLAGS > section. > > This assumes you're using the MacPython installation of Python and not > the standard one provided by Apple. I personally wouldn't recommend > using the standard Apple installation because a lot of modules assume > you have the Python Framework in /Library/Frameworks/ due to that > being the de facto standard set by MacPython and ActiveState Python. > In addition, the MacPython instalation provides Python 2.5.2, not just > 2.5.1. > > Matplotlib aside, you might want to make sure you installed the > Unicode version of wxWidgets, and reinstall it if necessary. > > Josh > > > > On Sun, Apr 13, 2008 at 3:12 PM, Gideon Simpson <gr...@co...> wrote: > > I don't see any error when I run python setup.py build for matplotlib. It > > seems to identify everything it needs. > > -gideon > > > > > > > > On Apr 13, 2008, at 10:35 AM, Joshua Lippai wrote: > > > > > > > Are you sure you built pylab correctly? See if you can find something > > > suspicious in the build dialog. I had this error once a long time ago, > > > but at some point since then a rebuild of everything fixed it. In the > > > mean time, using savefig will still work even if the GUI button > > > doesn't. > > > > > > Josh > > > > > > On Sat, Apr 12, 2008 at 11:41 AM, Gideon Simpson <gr...@co...> > > wrote: > > > > > > > For some reason when trying to save in PNG format on OS X 10.5.2, a > > > > window pops up with the error: > > > > > > > > Matplotlib backend_wx error > > > > cannot return std::string from Unicode object > > > > > > > > > > > > This is with the simple scipy demo at > > http://www.scipy.org/Cookbook/OptimizationDemo1 > > > > > > > > > > > > Gideon Simpson > > > > Department of Applied Physics & Applied Mathematics > > > > Columbia University > > > > gr...@co... > > > > > > > > > > > > > > ------------------------------------------------------------------------- > > > > This SF.net email is sponsored by the 2008 JavaOne(SM) Conference > > > > Don't miss this year's exciting event. There's still time to save $100. > > > > Use priority code J8TL2D2. > > > > > > http://ad.doubleclick.net/clk;198757673;13503038;p?http://java.sun.com/javaone > > > > _______________________________________________ > > > > Matplotlib-users mailing list > > > > Mat...@li... > > > > https://lists.sourceforge.net/lists/listinfo/matplotlib-users > > > > > > > > > > > > > > > > |
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From: Gideon S. <gr...@co...> - 2008-04-14 01:29:11
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Yea, I've been using 4.0 compilers along with the Apple installation of Python. I'll try out your suggestions. -gideon On Apr 13, 2008, at 8:41 PM, Joshua Lippai wrote: > I know I had some matplotlib trouble in terms of compiling on OS X > Leopard before I changed the Makefile inside > > /Library/Frameworks/Python.framework/Versions/Current/lib/python2.5/ > config/ > > If you're on an Intel Mac, try downloading the beta Apple GCC 4.2 from > http://developer.apple.com and alter the Makefile so that CC and CXX > are set to /usr/bin/gcc-4.2 and /usr/bin/g++-4.2 respectively. Also > remove the flag "-arch ppc" from both the BASEFLAGS and LDFLAGS > sections, and remove "-Wno-long-double" flag from the BASEFLAGS > section. > > This assumes you're using the MacPython installation of Python and not > the standard one provided by Apple. I personally wouldn't recommend > using the standard Apple installation because a lot of modules assume > you have the Python Framework in /Library/Frameworks/ due to that > being the de facto standard set by MacPython and ActiveState Python. > In addition, the MacPython instalation provides Python 2.5.2, not just > 2.5.1. > > Matplotlib aside, you might want to make sure you installed the > Unicode version of wxWidgets, and reinstall it if necessary. > > Josh > > On Sun, Apr 13, 2008 at 3:12 PM, Gideon Simpson > <gr...@co...> wrote: >> I don't see any error when I run python setup.py build for >> matplotlib. It >> seems to identify everything it needs. >> -gideon >> >> >> >> On Apr 13, 2008, at 10:35 AM, Joshua Lippai wrote: >> >> >>> Are you sure you built pylab correctly? See if you can find >>> something >>> suspicious in the build dialog. I had this error once a long time >>> ago, >>> but at some point since then a rebuild of everything fixed it. In >>> the >>> mean time, using savefig will still work even if the GUI button >>> doesn't. >>> >>> Josh >>> >>> On Sat, Apr 12, 2008 at 11:41 AM, Gideon Simpson <gr...@co... >>> > >> wrote: >>> >>>> For some reason when trying to save in PNG format on OS X >>>> 10.5.2, a >>>> window pops up with the error: >>>> >>>> Matplotlib backend_wx error >>>> cannot return std::string from Unicode object >>>> >>>> >>>> This is with the simple scipy demo at >> http://www.scipy.org/Cookbook/OptimizationDemo1 >>>> >>>> >>>> Gideon Simpson >>>> Department of Applied Physics & Applied Mathematics >>>> Columbia University >>>> gr...@co... >>>> >>>> >>>> >> ------------------------------------------------------------------------- >>>> This SF.net email is sponsored by the 2008 JavaOne(SM) Conference >>>> Don't miss this year's exciting event. There's still time to save >>>> $100. >>>> Use priority code J8TL2D2. >>>> >> http://ad.doubleclick.net/clk;198757673;13503038;p?http://java.sun.com/javaone >>>> _______________________________________________ >>>> Matplotlib-users mailing list >>>> Mat...@li... >>>> https://lists.sourceforge.net/lists/listinfo/matplotlib-users >>>> >>>> >>> >> >> |
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From: Christopher B. <Chr...@no...> - 2008-04-15 05:51:58
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Sorry I didn't chime in sooner, as I'm pretty sure i know exactly what the problem is, and I should have reported it a couple weeks ago when I found it. > Matplotlib aside, you might want to make sure you installed the > Unicode version of wxWidgets, and reinstall it if necessary. Actually, this is backwards -- I think the OP is using the unicode version of wxPython, and that's the source of the problem. The unicode version returns a unicode object from a FileDialog for a path. MPL can't deal with a unicode filename, and thus the error: >>>> Matplotlib backend_wx error >>>> cannot return std::string from Unicode object There are a couple solutions: 1) use the ansi, rather than unicode version of wxPython. 2) Patch MPL: a) convert the filename to a string before passing it off to MPL -- this is an bad kludge, as the Mac (and recent Windows, and Linux, and...) filesystem is unicode, and folks could have non-ansi characters in their filenames. b) Open the file with Python, and pass that into the MPL savefig method, instead of the filename. This is apparently slow with older MPLs, but has been fixed for good performance in SVN. However, I think I tried this on the Mac, and it worked great, but on Windows, I didn't get errors, but didn't get valid PNGs either. I ended up going back to converting my filename to a string and passing that off to MPL. See: http://www.nabble.com/unicode-filenames-and-MPL.-to16318069.html#a16318069 For more discussion. Can an MPL dev fix this, please? -Chris -- Christopher Barker, Ph.D. Oceanographer Emergency Response Division NOAA/NOS/OR&R (206) 526-6959 voice 7600 Sand Point Way NE (206) 526-6329 fax Seattle, WA 98115 (206) 526-6317 main reception Chr...@no... |
