My boss asked me to give him an IDW interpolation of polygon data. I'm not sure if he knows if that is possible or not.

IDW of points is very easy and I already have that done, but does anyone know if you can do a IDW of polygons? Wouldn't

that essentially be a chloropleth?

Thanks,

Pat

IDW of points is very easy and I already have that done, but does anyone know if you can do a IDW of polygons? Wouldn't

that essentially be a chloropleth?

Thanks,

Pat

It looks like IDW is limited to points as the input feature. Kriging and Spline also require points as the input feature. You might consider converting your polygons to points first. If you use the Feature to Point GP Tool, this will place a point at the centroid of the polygon and you could then interpolate based on these points. If you don't have ArcInfo, add an X (Double) and a Y (Double) field in your attribute table and calculate the geometry. This will calculate the location of the centroid of the polygon. Then create a feature class based on these XY points.

Hope this helps.

Luke