Lab 8 - Surface Interpolation

This week we covered various interpolation methods, as well as the best uses for each type of interpolator. 

Part of the lab involved comparing two DEMs that we created from elevation point data.  The two interpolation methods used were IDW (Inverse Distance Weighted) and Spline (regularized).  To compare the differences between the two methods the Raster Calculator tool was used to subtract the elevation values between the two DEM grids.  A map of the final result is shown below.

Map showing the differences between two DEM grids.