I'm using Kernel Utilization distributions to estimate overlap in animal territories. There are various ways to calculate this overlap and one of the equations is : V.I. = ∫∫∫ min (f1 (x,y,z), f2 (x,y,z)) dxdy where f1 = utilization distribution for bird 1 in 3 spatial dimensions (x,y,z). I can produce these already, but no idea how to do the rest. Thoughts?
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