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How to stretch values of raster inside the polygons?

Question asked by qwerty@ on Dec 15, 2016
Latest reply on Dec 18, 2016 by qwerty@

I have a raster dataset (DEM) and a shapefile with around 2000 polygons. I have cut my raster to the boundaries of my polygons and now I would like to stretch the values of my raster into 0-1 values range based on their height (the lowest height = 0, the highest height = 1). However, I would like to stretch into 0-1 values inside every polygon separately (so the values inside every individual polygon have to be stretched into 0-1 range). Is there some automatic way to do this?