Add masking around an image
Draw a mask around a Grid Based Image
choropleth
Georgia Social and Economic Data by County
choro.legend
Computational Inference from Point Data
Bootstrap and Kernel Bootstrap from Points
auto.shading
Add transparency to a hex-defined colour
Distance Units Conversion
generalize.polys
GISTools
Area of Each Polygon
Create a masking polygon to block out graphics outside a region.
Kernel Density Estimates From Points
Kernel Density Estimates
Add a north arrow to a map
Phenology data for North American lilacs
Number of Points in Each Polygon
map.scale
Number of Points in Each Polygon
US Tornado Touchdown Data
New Haven, Connecticut: Crime data with contextual information
Cut functions
Level plot for gridded data
Shading
Phenology data for North American lilacs