[Matplotlib-users] minor gtk issues with 0.64

[matthew a. <ma...@ca...>]

Thanks for matplotlib 0.64. Great to see steady improvements continue to 
roll in.

First the good news. IPython (0.6.4) using pylab works for me again. It 
broke with 0.63 / 0.6.3 and gtk 2.4.x, complaining about gtk mainloop 
and gtk main in the middle of the IPython prompt and then freezing up.

I had some minor issues with my GTK matplotlib API code.

1. I had to change

toolbar = NavigationToolbar(canvas)

to

toolbar = NavigationToolbar(canvas, win)

where win is the GTK window object. I guess the matplotlib API is still 
unstable. :)

2. I was getting errors that the 
matplotlib.backends.backend_mod.IMAGE_FORMAT attribute was not found, 
during toolbar initialization. I put in a workaround.

works with matplotlib 0.63:

import matplotlib
matplotlib.use('GTK')

from matplotlib.backends.backend_gtk import FigureCanvasGTK
from matplotlib.backends.backend_ps import FigureCanvasPS
from matplotlib.backends.backend_gtk import NavigationToolbar2GTK as 
NavigationToolbar

using matplotlib 0.64:

import matplotlib
matplotlib.use('GTK')
from matplotlib.backends import backend_gtk
matplotlib.backends.backend_mod = backend_gtk

from matplotlib.backends.backend_gtk import FigureCanvasGTK
from matplotlib.backends.backend_ps import FigureCanvasPS
from matplotlib.backends.backend_gtk import NavigationToolbar2GTK as 
NavigationToolbar

This style was cribbed from matplotlib examples and / or emails on this 
list.

Cheers,
Matthew.