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Creating a spatial coverage and overlap map

Question asked by Simpson1990 on Jun 2, 2015
Latest reply on Jun 2, 2015 by Simpson1990

Hi all,


I would very much appreciate some help in working out how to create a particular type of layer/map.


I have a polygon layer which represents spatial coverage of three different categories. At the moment these categories are represented as separate polygons. In certain areas the different categories overlap each other, so I want to create a map which represents areas where there are more than one category. This would mean that the final map should show seven different spatial classifications, as shown below:


Category A

Category B

Category C

Category A and B

Category A and C

Category B and C

Category A, B and C


I am stuck on working out how to create this sort of map/layer. If anyone could point me in the right direction so I at least know where to begin then that would be great. Sorry if I have not explained it very well, please ask if you need anymore information.