Imagine I have two sets of XY points, lets call them A and B, roughly coincident in space. Points A also have an attribute, lets call it N. I’d like to estimate (i.e. interpolate) the same attribute N for points B. I could simply “copy across” the value from the nearest corresponding points in A and B, but this is no good for the use case I have in mind. Instead I’d like to at least apply some summary statistic (e.g. mean), or better still something like IDW. So far all tools I can think of in Spatial Analyst take point attributes and interpolate them to a new raster (i.e. continuous surface, which I do not want), rather than interpolating to existing points. Does anyone know of any way to accomplish the latter please?