[R] a Q re. Kriging package

Sun Jul 13 00:22:00 CEST 2003

On 12 Jul 2003 at 11:19, Yan Yu wrote:

Kriging is an exact interpolator PROVIDED you have a variogram model 
with no nugget effect. If there is an nugget effect, kriging is not 
an exact interpolator. If any package implementing kriging in R 
do not give results according to this (modulo rounding error), it is 
in error. I have never seen problems with this, but have not tried 
all kriging implementations in R!

Kjetil Halvorsen

> Hello,
>    Based on a couple of textbooks on geostatistics I read, Kriging is an
> exact interpolator, which means it reconstructs sample data values at
> known locations.
> I wonder which Kriging package in R is an exact interpolator?
> does anyone has experience with that?
> 
> THANKS A LOT in advance,
> have a nice weekend,
> yan
> 
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