I am trying to analyze how sets of rasters relate to each other using some statistical techniques. As, I don't have much experience using the spatial statistics tools in ArcGIS I was exporting my rasters as Ascii files, and analyzing them using R (specifically the
maptools package, and
readAsciiGrid() ). This has been functioning ok (but as the datasets have 90,000 points it is slow to run the analysis), but I don't know if I am recreating in R, existing functionality in ArcGIS.
For example, I want to perform regressions between each of these rasters using a few different transformations (logarithmic, exponential, etc). Can this be done within ArcGIS? A second broader question is if there are standard statistical methods for examining this type of data?
Each raster pair has matching data/no-data values and all parameters are identical, aside from the gridcell value.