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Identify regions in common on two rasters

Question asked by RBadlan on Jul 8, 2020
Latest reply on Jul 14, 2020 by curtvprice



Am new here so excuse me if my question is naive! I have a terrain-filter raster in pink and another raster filter in purple (shown overlying the first). I am only interested in the areas where the pink and purple are connected.  In other words, I want to remove all the purple areas that are not associated with (adjacent to or overlayed) the pink regions, leaving just the areas where the two filters touch.  I then want to merge them together to make a filter combining both (I do not need to separate the pink from the purple - I just want to identify regions where the two filters are connected. 


How can I achieve this?Pink filterPink filter overlain by purple filter