Re: [Matplotlib-users] No Display in Axes3D with Logarithmic axes

[Benjamin R. <ben...@ou...>]

2011/4/3 hongleij <hon...@12...>

> OS :Win7 SP1
> ActivePython-2.7.1.3-win32-x86.msi
> numpy-1.5.1-win32-superpack-python2.7.exe
> matplotlib-1.0.1.win32-py2.7.exe
>
> Code:
>
>     from mpl_toolkits.mplot3d import axes3d
>     ax = axes3d.Axes3D(plt.gcf())
>     #ax.set_xlim(1,100000)
>     #ax.set_ylim(1,100000)
>     ax.set_xlabel("Download(GB)")
>     ax.set_ylabel("Upload(GB)")
>     ax.set_title("User Up/Down In 6 days")
>     ax.set_xscale('log') # Error: Cause No display
>     #ax.set_yscale('log') #
>     group = ax.scatter3D([1,20,300],[1,20,300],[1,20,300])
>     #ax.legend( user_level_groups, [ user[0] for user in
> user_level_str_list] )
>     plt.show()
>
>
> Error:
>
> Exception in Tkinter callback
> Traceback (most recent call last):
>   File "C:\Python27\lib\lib-tk\Tkinter.py", line 1410, in __call__
>     return self.func(*args)
>   File
> "C:\Python27\lib\site-packages\matplotlib\backends\backend_tkagg.py", line
> 245, in resize
>     self.show()
>   File
> "C:\Python27\lib\site-packages\matplotlib\backends\backend_tkagg.py", line
> 248, in draw
>     FigureCanvasAgg.draw(self)
>   File "C:\Python27\lib\site-packages\matplotlib\backends\backend_agg.py",
> line 394, in draw
>     self.figure.draw(self.renderer)
>   File "C:\Python27\lib\site-packages\matplotlib\artist.py", line 55, in
> draw_wrapper
>     draw(artist, renderer, *args, **kwargs)
>   File "C:\Python27\lib\site-packages\matplotlib\figure.py", line 798, in
> draw
>     func(*args)
>   File "C:\Python27\lib\site-packages\mpl_toolkits\mplot3d\axes3d.py", line
> 172, in draw
>     ax.draw(renderer)
>   File "C:\Python27\lib\site-packages\mpl_toolkits\mplot3d\axis3d.py", line
> 238, in draw
>     self.label.draw(renderer)
>   File "C:\Python27\lib\site-packages\matplotlib\artist.py", line 55, in
> draw_wrapper
>     draw(artist, renderer, *args, **kwargs)
>   File "C:\Python27\lib\site-packages\matplotlib\text.py", line 591, in
> draw
>     ismath=ismath)
>   File "C:\Python27\lib\site-packages\matplotlib\backends\backend_agg.py",
> line 154, in draw_text
>     self._renderer.draw_text_image(font.get_image(), int(x), int(y) + 1,
> angle, gc)
>   File "C:\Python27\lib\site-packages\numpy\ma\core.py", line 3818, in
> __int__
>     raise MaskError, 'Cannot convert masked element to a Python int.'
> MaskError: Cannot convert masked element to a Python int.
>
>
Sorry for the delay in responding.

Yes, this is a known bug.  I have not been able to figure out its exact
cause.  At this point, I will just say that mplot3d does not support log
scales.

Sorry I could not be more helpful.
Ben Root