[R-sig-Geo] Spatial Interpolation Cross Validation

[Paul Hiemstra]

 On 09/20/2011 12:59 PM, srp868 wrote:
> Hello 
>
>
> I believe there have been a couple of posts on this topic, but let me add
> this one.
>
> I need a way to perform leave out one cross validation on a bunch of data.
>
> I believe Automap is the way to go forward for Kriging and i am using it .
>
>
> Could someone suggest me a way to do the same with splines that may 
>
> use any existing spline package for R.
>
> Thanks 
>
> Sandeep Patil
>
> Dept of Geography
>
> Texas A & M University, College Station
>
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>
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Hi Sandeep,

For a project I wrote a few functions which smooths cross validation
across spatial packages, e.g. using Tps (thin plate splines) from the
fields package together with automap. See:

https://stat.ethz.ch/pipermail/r-sig-geo/2010-December/010363.html

I sent you the scripts off-list, which includes example code.

good luck,
Paul

-- 
Paul Hiemstra, Ph.D.
Global Climate Division
Royal Netherlands Meteorological Institute (KNMI)
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