Little issue with blitting technique

Community matplotlib-users
1

Hello,

I’ve just discovered blitting technique to
improve performances.

I’m using this example http://matplotlib.sourceforge.net/examples/animation/animation_blit_qt4.html

I encounter an issue if instead of using
subplot I use add_axes method to hand define where I want my plot.

In this case blitting is no more working
like if restore_region was not restoring context…

def init(self):

FigureCanvas.init(self, Figure())

#self.ax = self.figure.add_subplot(111)

self.ax = self.figure.add_axes([0.1,0.1,0.8,0.2])

Any idea why in this case the example given
is not working?

Cheers,

Laurent