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
