I have about 10 point shapefiles containing a lot of points each. (I would prefer not to join them into one shapefile, it's pain). And I am using interpolation method Topo to Raster to create a DTM. This method can deal with many separate datasets. I'm using ArcGIS 9.3 (and have access to 10).
I would like to get errors of the estimates, to check if they have normal distribution. How can I get the interpolation errors? Like the -e flag option in GRASS.
Is it available only for kriging? Is it the only way, to compute them manually comparing each dataset to the resulting raster? Thank you for advices.