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Other spatial smoothing methods

R: mgcv library; gam() function
- additional covariates, smoothing automatic, handles non-normal data
S-plus (eventually R): SemiPar module
- additional covariates, smoothing automatic
R: fields library; Tps() function
- smoothing automatic
none designed for anisotropy at this point
Example of Colorado annual precipitation, 1948

Figure: Colorado precipitation
$\includegraphics[]{/home/paciorek/research/present/gisspat/colo.eps}$

**Figure:** Colorado topography
$\includegraphics[clip]{/home/paciorek/research/present/gisspat/co.topo2.ps}$

Chris Paciorek 2004-03-18