Some days ago I was trying to generate a graphic of the projected EIRP over Spain using a MATLAB plot. I wanted to superimpose my results on a map I had found on the Internet, but I was unable of making the picture translucent.
This is a very common procedure when dealing with layers on a graphical editor software like GIMP or Photoshop. There’s usually a parameter called “opacity” that let’s you set the transparency of the layer in a MATLAB plot.
Given this, I was sure that MATLAB would have a similar option. After some time of googling I found it. After plotting some data you can use a handle to the plot for setting a parameter called “AlphaData”. This parameter represents the opacity of the plot in the range [0,1] (where 0 means “Invisible” and 1 means “No transparency at all”).
So you can do something like this:
imshow('Map.jpg'); hold on; PIREhand = imagesc( ... ); set(PIREhand, 'AlphaData', 0.6);
Map Image: desfaziendoentuertos