gstat: Variogram with non-Euclidean Distances
Julia, I can't help with implementation, but Waller & Gotway discuss non-euclidean distances in geostatistics briefly (p321). Apologies if you already knew this... cheers Ben
On 11/08/2011, at 5:29 PM, Julia Dechamps wrote:
Dear list, I am wondering whether there is a way to use a contiguity-, graph- or knn-based measure of distance (similar the neighbourhood objects described in "Applied Spatial Data Analysis with R, ch.9.2.2-9.2.4), rather than Euclidean distance, to construct a variogram (in gstat or otherwise). The observations I have are very unevenly spaced across a large geographic area and I therefore feel Euclidean distance might not be a good choice. I have searched the web but unfortunately was not able to find any hints on how I might implement the above. I would greatly appreciate any advice you might have. Regards, Julia
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