Renderer problems using Matplotlib from within a script

Question

I\'ve narrowed down to this call:

fig.canvas.tostring_argb() #fig=matplotlib.pyplot.figure()

this function raises an AttributeError

Answer 1

I suspect that you have missed out the call to:

fig.canvas.draw()

before

fig.canvas.tostring_argb()

as

import matplotlib
matplotlib.use('Agg')
import matplotlib.pyplot
fig=matplotlib.pyplot.figure()
fig.canvas.tostring_argb()

fails for me, but

import matplotlib
matplotlib.use('Agg')
import matplotlib.pyplot
fig=matplotlib.pyplot.figure()
fig.canvas.draw()
fig.canvas.tostring_argb()

works.