[R-sig-Geo] How to remove the second order trend in gstat?

Yong Li yong.li at unimelb.edu.au
Tue Apr 24 06:44:27 CEST 2007

Dear all,

I can remove the linear trend by using ~x+y in gstat, but have no 
idea to cope with the second order trend. Any help will be appreciated.


Yong Li

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