[R] (no subject)

Jonathan Greenberg greenberg at ucdavis.edu
Thu Jul 5 21:07:10 CEST 2007

I'm trying to hunt down an appropriate kriging package for my specific
application, and I was hoping someone on the R list might have some pointers
--  I'm interested in performing kriging and related spatial interpolations
with one of the R packages, but I need to be able to provide my own
point-to-point distances (e.g. I do not want to use standard between point
distances, as calculated by Euclidean or other similar distance measures).
Is there an R package that *I* can provide the matrix of distances between
every pair of points (e.g. for 10 points, I would have a 10 x 10 matrix of
distances)?  Similarly, if this is possible, can I then provide this package
a vector of distances from each point to an arbitrary unknown location (in
my example, this would be a 1x10 vector) and apply the model to this vector
to predict a single unknown point?  It seems most (if not all) of the
kriging packages I'm finding for R take the x,y,z location as the inputs and
calculate these distances themselves.  Thanks!


Jonathan Greenberg

Jonathan A. Greenberg, PhD
Postdoctoral Scholar
Center for Spatial Technologies and Remote Sensing (CSTARS)
University of California, Davis
One Shields Avenue
The Barn, Room 250N 
Davis, CA 95616
Cell: 415-794-5043
AIM: jgrn307
MSN: jgrn307 at hotmail.com

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