First, I'm new to matlab, so thanks in advance for any help.
I have a .png image that I have overlayed onto another image. How can I make only the black pixels on the .png image transparent? I have looked around and no one seems to specifically address this question clearly. I was trying to use either the 'BackgroundColor' function or alphadata.
Use EXPORT_FIG submission from the File Exchange.
I believe it supports background color transparency for PNG files.