I am struggling with making graph transparent. Basically, i have wxpython app with graph located on panel. The panel has bitmap background so i wanted to get rid of white background of chart in order to make whole thing nice looking.
However, i can't solve it. I was trying setting with  patch.set_alpha or set facecolor but no satisfying results.
Is there a way to get what i was trying to do?

Now i am thinkinig of generating png file and load to app but i would like to avoid it

Thanks in advance for all clues

best regards