I'm trying to predict in which areas there might be undiscovered archaeological sites but I cannot figure out how to do this. I have a background map of a region and I would like to create a map that shows which areas of it are within 1 km of three different types of soil (I have converted these to three separate rasters). Also, I would like it to show different levels of suitability depending on how many of these three types of soil are within 1 km. For example: areas within 1 km of all three soil types coloured red, areas within 1 km of two soil types coloured orange, areas within 1 km of one type of soil coloured yellow and all other areas coloured green. I was thinking of using Weighted Overlay, but I'm not sure it will work since all my criteria are equally important. Does anyone have any idea how this could be done? I read about an add-in called Predicitve Analysis Tool that sounded perfect for this, but it's no longer available as far as I can see. I have ArcGIS Desktop 10.5, version 10.5.0.6491, License type: Advanced.
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