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Transparent Overlay [message #82068] Fri, 16 November 2012 03:30
moadeep is currently offline  moadeep
Messages: 2
Registered: November 2012
Junior Member
Hi All,

I am using IDL 6.4 and would like to overlay a subtraction image with a red colorscale (CTIndex = 3) over a grayscale image. I have tried using David Fannings cgImage and cgTransparentImage but this does not work and I receive the message -- alpha blending requires IDL 6.5 or newer versions.

Is there an alternative approach I can use

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