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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.

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    Have you explored the questions associated with the clustering tag?
    – whuber
    Jan 6, 2012 at 20:38
  • @whuber I poked around for a while on the stack exchange without much luck. I'll explore and let you know what I find
    – Kjohnson
    Jan 9, 2012 at 23:11
  • I found a bunch of good answers here. Perhaps more to the point, a brief survey of the variety of cluster-related questions will suggest the additional information you should be supplying to get a good solution to your problem.
    – whuber
    Jan 9, 2012 at 23:39
  • I didn't find anything directly corresponding to what I'm looking for. However, Clusterpy has provided me with the impetus to just go ahead and try and script a solution in Python anyway. I find it strange that there's no obvious tool/solution for this in ArcGIS.
    – Kjohnson
    Jan 10, 2012 at 21:45

2 Answers 2

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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.

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  • thanks for the suggestions. I'll snoop around and see what 3rd party scripts I can find.
    – Kjohnson
    Jan 9, 2012 at 23:08
  • Have a look at Geospatial Modelling Environment (GME) - spatialecology.com/gme/kmeans.htm It requires ArcGIS 10.X and R. Oct 16, 2015 at 16:21
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If your data is attributed with some sort of "by type" field, you could use the Mean Center geoprocessing tool and set the case field.

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  • @ Hornbydd, good suggestion. However, I'm looking for a method to group points based on geographical proximity only. Thanks though.
    – Kjohnson
    Jan 9, 2012 at 23:42
  • It is very useful this geoprocessing tool.
    – juasmilla
    Oct 3, 2014 at 9:27

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