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GSTAT fit.variogram method: msg#00046

lang.r.geo

Subject: GSTAT fit.variogram method

Hi All,

Can anyone tell me what GSTAT variogram fit method most closely resembles that used in S-PLUS. I'd like to try to come as close as I can to matching some analysis that was done with the variogram.fit function in S-PLUS.

In S-PLUS the WLS function used is objective.fun <- function(y,yh,n) sum(n*(y/yh-1)^2)

The GSTAT fit methods are in Table 4.2 of the manual and I'm not sure that any are a perfect match. Based on the formulas and my own output it looks like fit method 2 comes closest.

Any suggestions?

Zev



--
Zev Ross
ZevRoss Spatial Analysis
303 Fairmount Ave
Ithaca, NY 14850
(607) 277-0004 (phone)
(866) 877-3690 (fax toll-free)
zev@xxxxxxxxxxx
www.zevross.com

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