Hi, Sorry if it's not the right place as this question is a bit generic. Let say we have N datapoint triplets xi, yi, zi. If we ask "how many points" there are in the interval X < x < X+ΔX and Y < y < Y+ΔY (where X and Y are some gridpoints) -- then this is a 2D histogram. But in each such 2D bin there is some distribution of z values. How would you call a 2D map of the average (or whatever distribution moment) of the z values in the 2D bin around (X,Y)? I just can't think of the right term! It's not what I would usually consider interpolation. I'll be very happy if someone knows the name of this procedure.