[FORGED] different models

Hi Rolf,

Thank you for your very complete response. If I understand it correctly
then, I should just include the Cartesian coordinates in my covariates
list if I want to model the intensity specifically in relation to them
as well as the covariates, correct?

Well, in a word, yes.  Dunno what more I can say without inducing 
obfuscation instead of clarification (of what is actually a simple issue.)

The best way to get an understanding of what is involved, IMHO, is to do 
some experimentation.  Fit some models to some data, plot the fitted 
surfaces (either as image plots or perspective plots) and see what the 
results look like.

<SNIP>

cheers,

Rolf

Technical Editor ANZJS
Department of Statistics
University of Auckland
Phone: +64-9-373-7599 ext. 88276