[R-sig-Geo] Inverse distance weighting

[Paul Hiemstra]

Hi,

The geostatistical package gstat supports IDW.

library(gstat)
data(meuse)
data(meuse.grid)
coordinates(meuse)=~x+y
gridded(meuse.grid)=~x+y

meuse.idw = idw(log(zinc)~1, meuse, meuse.grid, idp = 2)
spplot(meuse.idw, "var1.pred")

cheers,
Paul

JY SON wrote:
> Dear everyone,
>
>  
>
> I try to do spatial interpolation using R.
>
> I have air pollution monitoring data from 13 monitoring stations.
>
> I'd like to make estimates of unmeasured points using IDW (Inverse Distance
> Weighting) method. 
>
> I have coordinates of monitoring station and unmeasured points.
>
> It would be highly appreciated if you let me know which function and library
> I can use to do the above.
>
>  
>
> Best regards,
>
> Jiyoung
>
>  
>
>
> 	[[alternative HTML version deleted]]
>
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> R-sig-Geo at stat.math.ethz.ch
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>   


-- 
Drs. Paul Hiemstra
Department of Physical Geography
Faculty of Geosciences
University of Utrecht
Heidelberglaan 2
P.O. Box 80.115
3508 TC Utrecht
Phone:  +3130 274 3113 Mon-Tue
Phone:  +3130 253 5773 Wed-Fri
http://intamap.geo.uu.nl/~paul