[R-sig-Geo] geoR help with kriging (newbie!)

[Mike Smith]

Hi

I have recently been experimenting with the use of kriging, primarily
through Goldensoftware's Surfer. Having had a look around at the
packages available for R I see the geoR (amongst several) supports
kriging and so have started experimenting with this.

What I am interested in doing is batch processing ~300 datasets using
ordinary kriging with an exact interpolator (which I believe has no nugget).

As I am not expert with either R or kriging (!!) I was wondering
what the best command line options might be? I have been working
through the geoR intro and have a few queries:

-the command below appears to cover everything I want to do, however do
I need to fit a model to the variogram first and, if so, where is this
specified (using krige?)
kc <- krige.conv(s100, loc = pred.grid, krige = krige.control(obj.m = ml))

-the input file is a data frame with three columns; x and y coordinates
and a z value to interpolate. I would ideally like to tell geoR (using
loc) to take the max extent of my area and, at a specified point spacing,
interpolate a new grid.


Many thanks

mike


-- 
Dr Mike J Smith
Editor-in-Chief: Journal of Maps
http://www.journalofmaps.com

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