Using mpl 0.99.1 and sometimes get the following exception.
Traceback (most recent call last):
File "C:\Python26\lib\site-packages\wx-2.8-msw-unicode\wx\_core.py",
line 14640, in <lambda>
lambda event: event.callable(*event.args, **event.kw) )
File "C:\dev\TwcbBranchesV32\Program\panelstats.py", line 385, in
RefreshAllGraphs
self.RefreshCountryValue(self.countryValueP, self.countryValue)
File "C:\dev\TwcbBranchesV32\Program\panelstats.py", line 417, in
RefreshCountryValue
self.DoStatsParetoAlt(sql, panel, axes, _('Value - in home
currency'), _('Purchase value in % of cumulated purchase value'), avg=True)
File "C:\dev\TwcbBranchesV32\Program\panelstats.py", line 992, in
DoStatsParetoAlt
panel.canvas.draw()
File
"C:\Python26\lib\site-packages\matplotlib\backends\backend_wxagg.py",
line 61, in draw
self.bitmap = _convert_agg_to_wx_bitmap(self.get_renderer(), None)
File
"C:\Python26\lib\site-packages\matplotlib\backends\backend_wxagg.py",
line 229, in _py_WX28_convert_agg_to_wx_bitmap
agg.buffer_rgba(0, 0))
File "C:\Python26\lib\site-packages\wx-2.8-msw-unicode\wx\_gdi.py",
line 908, in BitmapFromBufferRGBA
return _gdi_._BitmapFromBufferRGBA(width, height, dataBuffer)
RuntimeError: Failed to gain raw access to bitmap data.
I thought/guessed it had to do with not having resized the canvas
correctly, but I am not sure and the following code is run whenever I
resize the parent of the canvas.
def _SetSize( self ):
pixels = tuple( self.parent.GetClientSize() )
self.SetSize( pixels )
self.canvas.SetSize( pixels )
self.figure.set_size_inches( float( pixels[0]
)/self.figure.get_dpi(),
float( pixels[1]
)/self.figure.get_dpi() )
What could the cause of this error be?
Werner
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