[R-sig-Geo] gstat: Variogram with non-Euclidean Distances

[Ben Madin]

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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