Tomas This is probably the model also known as the generalised linear: gamma(h)=nugget effect + slope x distance-to-a-power parameters are slope and power for distance. I may be wrong!! Isobel http://www.kriging.com
tomas hlasny <[EMAIL PROTECTED]> wrote: Dear all, I am calculating ANOVA adjusted for spatial autocorrelation using SAS Proc Mixed. It uses variogram to reduce the number of degrees of freedom. Can somebody help me, how to define a power model? Normaly, the parameters are sill, range (resp. scale), exponent and nugget respectively. However, as I found in SAS manual that power models is defined only using 2 params. Can somebody help? Thank`s a lot Best regards Tomas Dr. Tomá Hlásny NATIONAL FOREST CENTRE Department of Ecology and Biodiversity of Forest Ecosystems -------------------------------------- T. G. Masaryka st. 22, SK-96092 Zvolen Slovak Republic http://www.nlcsk.org/ phone: +421/45/532 03 16 fax: +421/45/531 41 92 NARODNE LESNICKE CENTRUM http://www.nlcsk.org begin:vcard fn:Tomas Hlasny n:Hlasny;Tomas org:National Forest Centre - Forest Research Institute;Ecology and Biodiversity of Forest Ecosystems adr:;;T. G. Masaryka 22;Zvolen;;96001;Slovakia email;internet:[EMAIL PROTECTED] title:Dr. x-mozilla-html:FALSE url:www.nlcsk.org version:2.1 end:vcard
