I don't think this is related to Qt at all, but is illustrating some
sort of bug in the font lookup code.
Can you try removing fontList.cache and trying again? I *believe* it
lives in "C:\Documents and Settings\${YOURNAME}\Local
Settings\.matplotlib" on Windows, but I'm not a regular Windows user.
You may have to search for it.
Also, set the rcParam['verbose.level'] to 'debug-annoying' and send the
output. That may provide some clues as to how the font lookup is failing.
Cheers,
Mike
Alexander Bruy wrote:
> Hi, all
>
> I try to use last stable version of matplotlib 0.9.85.2 with PyQt 4.5.2 under
> Windows XP Pro SP3, Python 2.5.2 and get error
>
> Traceback (most recent call last):
> File "/home/alex/.qgis//python/plugins/statist/statist.py", line 114, in
> doCalcStats
> d = doStatist.dlgStatist( self.iface )
> File "/home/alex/.qgis//python/plugins/statist/doStatist.py", line 81, in
> __init__
> self.canvas = FigureCanvas( self.figure )
> File
> "/usr/lib/python2.5/site-packages/matplotlib/backends/backend_qt4agg.py",
> line 57, in __init__
> FigureCanvasQT.__init__( self, figure )
> File "/usr/lib/python2.5/site-packages/matplotlib/backends/backend_qt4.py",
> line 100, in __init__
> self.resize( w, h )
> File "/usr/lib/python2.5/site-packages/matplotlib/backends/backend_qt4.py",
> line 162, in resize
> self.draw()
> File
> "/usr/lib/python2.5/site-packages/matplotlib/backends/backend_qt4agg.py",
> line 133, in draw
> FigureCanvasAgg.draw(self)
> File "/usr/lib/python2.5/site-packages/matplotlib/backends/backend_agg.py",
> line 261, in draw
> self.figure.draw(self.renderer)
> File "/usr/lib/python2.5/site-packages/matplotlib/figure.py", line 762, in
> draw
> for t in self.texts: t.draw(renderer)
> File "/usr/lib/python2.5/site-packages/matplotlib/text.py", line 299, in draw
> bbox, info = self._get_layout(renderer)
> File "/usr/lib/python2.5/site-packages/matplotlib/text.py", line 193, in
> _get_layout
> 'lp', self._fontproperties, ismath=False)
> File "/usr/lib/python2.5/site-packages/matplotlib/backends/backend_agg.py",
> line 137, in get_text_width_height_descent
> font = self._get_agg_font(prop)
> File "/usr/lib/python2.5/site-packages/matplotlib/backends/backend_agg.py",
> line 177, in _get_agg_font
> font = FT2Font(str(fname))
> RuntimeError: Could not load facefile /; Unknown_File_Format
>
> Does this means that matplotlib don't work with QT 4.5.2 and I need latest
> svn version?
> With PyQt 4.4.3 same program work fine and there is no errors
>
> Thanks,
> Alexander Bruy
>
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