Re: [Matplotlib-users] Bug in WXAgg on OS X and Matplotlib 0.87

Onsi Fakhouri had the same problem and found a workaround. But I  
appreciate your help
the WX_AGG environment variable fixed one problem and your  
information on the linking tool should prove useful
to verify that things are getting build correctly.

See my post today titled "Workaround for 0.87 WXAgg bug".
Apparently according to Onsi
  there is a bug in the C code, memory is not being allocated correctly.


On 27 Feb, 2006, at 10:24, Christopher Barker wrote:

> Sam,
>
> I wish I could be more help,. but maybe I can help steer your  
> efforts  bit:
>
>> /Library/Frameworks/Python.framework/Versions/2.4/lib/python2.4/ 
>> site-packages/matplotlib/backends/backend_wxagg.py in draw(self,  
>> repaint)
>>      60         FigureCanvasAgg.draw(self)
>>      61
>> ---> 62         self.bitmap = _convert_agg_to_wx_bitmap 
>> (self.get_renderer(), None)
>>      63         if repaint:
>>      64             self.gui_repaint()
>> MemoryError: _wxagg.convert_agg_to_wx_bitmap(): could not create  
>> the wx.Bitmap
>
> This sure looks like your error occurs when MPL is trying to  
> convert from the wxagg internal image storage to a wxBitmap. As a  
> test, I'd make sure the pure Agg back-end works fine (have it  
> create a PNG). If so then font,s etc have nothing to do withyour  
> trouble...it's all about the agg -> wx conversion. that's why I  
> thought it could be caused by liniking to the wrong version of wx.
>
> to make sure you have linked to the right version, you can use:
>
> otool -L
>
> on the wxagg libs that MPL builds. That should tell you which wx  
> libs you've actuallylinked to.
>
>
> With any luck, I'll have a chance to try to get this working on my  
> system this week, and then maybe I'll be more help.
>
> -Chris
>
>
>
>
>
>
> -- 
> Christopher Barker, Ph.D.
> Oceanographer
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>
> Chr...@no...

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