I am looking for a process in ArcGIS that takes a point feature class and groups the points into a user-provided number of clusters.
[GIS] Grouping points into user-provided number of clusters using ArcGIS for Desktop
arcgis-desktopclustering
Related Solutions
you can check out k-means clustering algorithm here.
In data mining, k-means clustering is a method of cluster analysis which aims to partition n observations into k clusters in which each observation belongs to the cluster with the nearest mean. This results into a partitioning of the data space into Voronoi cells.
kmeans-postgresql implementation here.. and i newly meet this topic Spatial clustering with PostGIS , you can check out here from @Mike Toews with ST_MinimumBoundingCircle function..
Take a look at the Reclassify tool. Alternately you can do the reclassification from the Spatial Analyst toolbar.
Best Answer
k-means clustering is exactly what you want. Version 10.1 has k-means clustering... if you are beta program eligible you could try that. You could also try doing your k-means clustering in R and then bringing the results over the arcgis. I think there are also some 3rd party scripts out there for k-means clustering using versions 9.3 and 10.0 too.