Dear list,

I am going to fit an ellipsoid model of anisotropy.
The input are 4 ranges (scale parameters) and 4 main
directions (0, 45, 90, 135 degree) from directional
semivariogram model.

Is there anybody have experience or a reference
related to the algorithm for doing that? It is looked
simple but make me confusing. I could do it by manual,
but I want to obtain the precise ellipsoid anisotropy
by writing a small routine. 

Many thanks for your attention.

Regards,

M. Nur Heriawan
http://www.mining.itb.ac.id/heriawan

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