Saving matplotlib figure

[GoogleCodeExporter]

What steps will reproduce the problem?
1.Saving a figure from matplotlib


WebIOPi version used?
=>0.7.1

Python version used?
=>2.7

Distro used? (WebIOPi has only been tested on Raspbian Wheezy)
=>Raspbian Wheezy

Raspberry Pi board revision? (1 or 2)
=>

For Javascript side bugs, Browser?
=>

Please provide any additional information below.

Im reading in a set of data from a text file and wish to plot them on a graph 
using matplotlib.
The problem is that whenever I try to save the generated figure, it does 
nothing. i.e no file is saved.

I have tried the code without webiopi and the file is saved without a problem.

Does anyone know how to save the figure in webiopi?

Thanks

Original issue reported on code.google.com by [email protected] on 5 Apr 2015 at 10:48