[Matplotlib-users] unable to draw text at angles other than 0 or 90

[WALTER A. <ala...@th...>]

Hello,
Concernig the source code of my previous post, the use of "ax.set_title('Volumic definition')" generate the following message:
/opt/IPASTEST/lib/python2.7/site-packages/matplotlib/backends/backend_gdk.py:150: UserWarning: backend_gdk: unable to draw text at angles other than 0 or 90
  'other than 0 or 90')
I thought that by default the drawing requested by my instruction set_title is 0
Thank you for your suggestions