I have 20 different polygons and I'd like all the pairwise intersection among them. I might be wrong, but I think Intersect isn't working because it's trying to find the intersection of all polygon layers? But Pairwise Intersect will only accept two layers. I've seen this similar question,
but manually counting the number of FID's in the union attribute table is not an efficient way. I'm hoping there is a quicker option?
My attribute table looks like this: -1, 0, -1, 0, 0, 1. Where I'm assuming that would indicate the absence of the original two polygons and the presence of the third.