[R-sig-Geo] anisotropy - intamap

seba sebastiano.trevisani at libero.it
Wed Jan 13 15:43:08 CET 2010

Dear list members

I have a tecnical question in relation to the calculation of 
variogram anisotropy in presence of a trend with estimateParameters function.
I have a data set "w" with a clear trend (degree 1) so I would like 
to calculate geometric anisotropy of residuals.
I do the following:

But when I go to check for anisotropy I have the impression that the 
anisotropy calculated is relative to the raw variogram not to the residual one:
Is it possible?
Is there something wrong in my expression?
Thank you in advance for your help.


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