ArcGIS Help: 'Spatial Analyst' - Start with the 'Overview'
The exercise is more or less self-explanatory.
I'll demonstrate the first
few steps of the raster manipulation tools - viz., setting up 100m gridcells for
Cambridge and using these to convert the sales89 and cambbgrp layers to rasters.
Spatial Analyst: Setting up the grid cells and properties
explore 'options' values
after creating grid, zoom in to border and check edges
examine attribute table
After first IDW (inverse distance weighting)
compare with/without mask
note that attribute table is not visible for floating point grid values
note display does additional smoothing with contour-like thematic map