nroAggregate            Map Statistics
nroCircus               Map Visualization
nroColorize             Map Visualization
nroFigure               Map Visualization
nroKmeans               Data Clustering
nroKoho                 Create a self-organizing map
nroLabel                Map Visualization
nroMatch                Find best-matching districts
nroMatrix               Data Input
nroPermute              Map Statistcs
nroTrain                Train Self-Organizing Map
