In GWmodel, we introduce techniques from a particular branch of spatial statis-
tics,termed geographically-weighted (GW) models. GW models suit situa-
tions when data are not described well by some global model, but where there are spatial re-
gions where a suitably localised calibration provides a better description. GWmodel in-
cludes functions to calibrate: GW summary statistics, GW principal components analy-
sis, GW discriminant analysis and various forms of GW regression; some of which are pro-
vided in basic and robust (outlier resistant) forms