Thanks for getting to the bottom of this. I'll add some comments to the bug, too.
Mike Craig Finch wrote: > Okay, I figured it out. The people who maintain the Gentoo ebuild for > matplotlib decided to remove the "unnecessary" copies of fonts, pycxx and > pyparser that are bundled with matplotlib. The latest version of the ebuild > contains code that explicitly removes the bundled fonts, pyparser and pycxx > modules. I would never have thought to look there if you hadn't pointed this > out. I posted a bug on Gentoo (260025) requesting that they use the bundled > pyparsing module, and check with the matplotlib developers about the other > "redundant" packages before deleting them. > > Thanks for your help. > > Craig > > > > ----- Original Message ---- > From: Michael Droettboom <md...@stsci.edu> > To: Craig Finch <cfi...@ieee.org> > Cc: matplotlib-users@lists.sourceforge.net > Sent: Monday, February 23, 2009 9:49:06 AM > Subject: Re: [Matplotlib-users] Crash when trying to show a semilog or > log-log plot > > Strange. I am unable to reproduce this with 0.98.2 (0.98.3 or 0.98.5)... > > It's happening inside of the math expression renderer, which is used to draw > the exponents that happen with semilog and log-log axes. It doesn't, > however, appear to be font-related, which is a frequent installation/system > problem. > > What is strange about this traceback is that it is using the system-wide > installed version of pyparsing.py, and not the one that comes with > matplotlib. matplotlib is very sensitive to small version changes in > pyparsing, so we distribute our own copy and try to use it. If you > temporarily move /usr/lib/python2.4/site-packages/pyparsing.py to another > location, does that solve the problem? If so, I will look into how we're > importing pyparsing.py to ensure we always use the local copy. > > Mike > > Craig Finch wrote: > >> I am using matplotlib-0.98.5.2 and getting a strange crash when trying to >> show() a window with semilog or log-log axes. Here is a simple script that >> will cause the crash: >> >> import pylab >> from numpy import * >> x = arange(1., 10., 0.1) >> y = x**2 >> pylab.semilogx(x,y) >> pylab.show() >> >> At the end of this message is a sample of the output. I had to cut it down >> because it's apparently stuck in a loop in pyparsing.py and keeps outputting >> the same repetitive message. Did I find a bug here? Any suggestions would >> be appreciated. >> >> Craig >> >> Sample output: >> ------------------------------------------------------ >> File >> "//usr/lib/python2.4/site-packages/matplotlib/backends/backend_gtk.py", line >> 352, in expose_event >> self._render_figure(self._pixmap, w, h) >> File >> "//usr/lib/python2.4/site-packages/matplotlib/backends/backend_gtkagg.py", >> line 75, in _render_figure >> FigureCanvasAgg.draw(self) >> File >> "//usr/lib/python2.4/site-packages/matplotlib/backends/backend_agg.py", line >> 279, in draw >> self.figure.draw(self.renderer) >> File "//usr/lib/python2.4/site-packages/matplotlib/figure.py", line 772, >> in draw >> for a in self.axes: a.draw(renderer) >> File "//usr/lib/python2.4/site-packages/matplotlib/axes.py", line 1601, in >> draw >> a.draw(renderer) >> File "//usr/lib/python2.4/site-packages/matplotlib/axis.py", line 710, in >> draw >> tick.draw(renderer) >> File "//usr/lib/python2.4/site-packages/matplotlib/axis.py", line 193, in >> draw >> self.label1.draw(renderer) >> File "//usr/lib/python2.4/site-packages/matplotlib/text.py", line 452, in >> draw >> bbox, info = self._get_layout(renderer) >> File "//usr/lib/python2.4/site-packages/matplotlib/text.py", line 252, in >> _get_layout >> w, h, d = renderer.get_text_width_height_descent( >> File >> "//usr/lib/python2.4/site-packages/matplotlib/backends/backend_agg.py", line >> 152, in get_text_width_height_descent >> ox, oy, width, height, descent, fonts, used_characters = \ >> File "//usr/lib/python2.4/site-packages/matplotlib/mathtext.py", line >> 2808, in parse >> box = self._parser.parse(s, font_output, fontsize, dpi) >> File "//usr/lib/python2.4/site-packages/matplotlib/mathtext.py", line >> 2259, in parse >> self._expression.parseString(s) >> File "/usr/lib/python2.4/site-packages/pyparsing.py", line 1065, in >> parseString >> loc, tokens = self._parse( instring, 0 ) >> File "/usr/lib/python2.4/site-packages/pyparsing.py", line 998, in >> _parseCache >> value = self._parseNoCache( instring, loc, doActions, callPreParse ) >> File "/usr/lib/python2.4/site-packages/pyparsing.py", line 941, in >> _parseNoCache >> loc,tokens = self.parseImpl( instring, preloc, doActions ) >> File "/usr/lib/python2.4/site-packages/pyparsing.py", line 2577, in >> parseImpl >> return self.expr._parse( instring, loc, doActions, callPreParse=False ) >> File "/usr/lib/python2.4/site-packages/pyparsing.py", line 998, in >> _parseCache >> value = self._parseNoCache( instring, loc, doActions, callPreParse ) >> File "/usr/lib/python2.4/site-packages/pyparsing.py", line 941, in >> _parseNoCache >> loc,tokens = self.parseImpl( instring, preloc, doActions ) >> File "/usr/lib/python2.4/site-packages/pyparsing.py", line 2325, in >> parseImpl >> loc, exprtokens = e._parse( instring, loc, doActions ) >> File "/usr/lib/python2.4/site-packages/pyparsing.py", line 998, in >> _parseCache >> value = self._parseNoCache( instring, loc, doActions, callPreParse ) >> File "/usr/lib/python2.4/site-packages/pyparsing.py", line 941, in >> _parseNoCache >> loc,tokens = self.parseImpl( instring, preloc, doActions ) >> File "/usr/lib/python2.4/site-packages/pyparsing.py", line 2690, in >> parseImpl >> loc, tokens = self.expr._parse( instring, loc, doActions, >> callPreParse=False ) >> File "/usr/lib/python2.4/site-packages/pyparsing.py", line 998, in >> _parseCache >> value = self._parseNoCache( instring, loc, doActions, callPreParse ) >> File "/usr/lib/python2.4/site-packages/pyparsing.py", line 941, in >> _parseNoCache >> loc,tokens = self.parseImpl( instring, preloc, doActions ) >> File "/usr/lib/python2.4/site-packages/pyparsing.py", line 2325, in >> parseImpl >> loc, exprtokens = e._parse( instring, loc, doActions ) >> File "/usr/lib/python2.4/site-packages/pyparsing.py", line 998, in >> _parseCache >> value = self._parseNoCache( instring, loc, doActions, callPreParse ) >> File "/usr/lib/python2.4/site-packages/pyparsing.py", line 941, in >> _parseNoCache >> >> ------------- snip ------------- >> >> File "/usr/lib/python2.4/site-packages/pyparsing.py", line 2309, in parseImpl >> loc, resultlist = self.exprs[0]._parse( instring, loc, doActions, >> callPreParse=False ) >> File "/usr/lib/python2.4/site-packages/pyparsing.py", line 998, in >> _parseCache >> value = self._parseNoCache( instring, loc, doActions, callPreParse ) >> File "/usr/lib/python2.4/site-packages/pyparsing.py", line 941, in >> _parseNoCache >> loc,tokens = self.parseImpl( instring, preloc, doActions ) >> File "/usr/lib/python2.4/site-packages/pyparsing.py", line 2321, in >> parseImpl >> raise ParseSyntaxException(pe) >> File "/usr/lib/python2.4/site-packages/pyparsing.py", line 230, in __init__ >> super(ParseSyntaxException, self).__init__( >> TypeError: super() argument 1 must be type, not classobj >> >> >> >> ------------------------------------------------------------------------------ >> Open Source Business Conference (OSBC), March 24-25, 2009, San Francisco, CA >> -OSBC tackles the biggest issue in open source: Open Sourcing the Enterprise >> -Strategies to boost innovation and cut costs with open source participation >> -Receive a $600 discount off the registration fee with the source code: SFAD >> http://p.sf.net/sfu/XcvMzF8H >> _______________________________________________ >> Matplotlib-users mailing list >> Matplotlib-users@lists.sourceforge.net >> https://lists.sourceforge.net/lists/listinfo/matplotlib-users >> >> > > -- Michael Droettboom > Science Software Branch > Operations and Engineering Division > Space Telescope Science Institute > Operated by AURA for NASA > > > > -- Michael Droettboom Science Software Branch Operations and Engineering Division Space Telescope Science Institute Operated by AURA for NASA ------------------------------------------------------------------------------ Open Source Business Conference (OSBC), March 24-25, 2009, San Francisco, CA -OSBC tackles the biggest issue in open source: Open 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