How can I fix the range in a coverage map?

[yviiiii]

Is it possible to fix the range and color scheme for path gain in a coverage map? Also, I'm looking for a way to save the image after executing cm.show(). Is there a function like cm.save() for this purpose?

[jhoydis]

The function cm.show() returns a matplotlib figure that you can save using the savefig method (doc):

fig  = cm.show()
fig.savefig('my_figure.png')

If you want to change the appearance of the coverage map, the best would be to have a look at the source code of the cm.show() method and modify it according to your liking. The code is very easy to understand.

[yviiiii]

Thank you for your kind and accurate answer!