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
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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
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