Is it possible to "layer" one image over another, the first at full transparency and the second with partial transparency?
I'm thinking of combining a hillshade and a (partially) transparent color-relief image, a visual enhancement technique. (I know how to do this downstream in R and Python or similar, I'd like to stay in C++'s warm embrace. ) I can go and find out what "over plot" means when it comes to colour imagery, just wondering if there's anything in-built already. This might be a nice additional mode to gdaldem (and is what I thought "color-relief" meant, at first). Cheers, Mike -- Michael Sumner Research Software Engineer Australian Antarctic Division Hobart, Australia e-mail: mdsum...@gmail.com
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