Further Capabilities in Geographic Information Science
Add transparency to a hex-defined colour
Draw a mask around a Grid Based Image
auto.shading
choro.legend
choropleth
Distance Units Conversion
generalize.polys
GISTools
Bootstrap and Kernel Bootstrap from Points
Kernel Density Estimates
Level plot for gridded data
map.scale
Add a north arrow to a map
Area of Each Polygon
Number of Points in Each Polygon
Number of Points in Each Polygon
Create a masking polygon to block out graphics outside a region.
Cut functions
Shading
thematic.map
Mapping and spatial data manipulation tools - in particular drawing thematic maps with nice looking legends, and aggregation of point data to polygons.