Re: [Matplotlib-users] Transparent background PNG

[John H. <jdh...@ac...>]

>>>>> "Robert" == Robert Leftwich <ro...@le...> writes:

    Robert> I'd like to be able to generate a png with a transparent
    Robert> background so that I can overly multiple graphs on top of
    Robert> each other (in a web page). I've tried the frameOn-False
    Robert> discussed a couple of times in the mailing list it doesn't
    Robert> produce the desired result.  Is this possible?

figure(frameon=False)

must work for the figure frame.  Do you need the axes to be
transparent too.  Note that the figure and axes frames are both
matplotlib rectangles.  You can control the transparency of the
rectangle by calling

rect.set_alpha(0.5)

You can access the figure Rectangle instance as

  fig.figPatch

and the Axes Rectangle instance as 

  ax.axesPatch 


Passing one of these instances to "help" or "set" will give more info.

JDH