Ripley K

Ripley's K and its derivative, the L function,  are widely used for detecting clusters over various spatial scales.   The figure below is one of my favorites for illustrating the concept of a phenomenon displaying one spatial pattern over long distances, and another pattern over short distances. (Source)   The genius of the K function is … Continue reading Ripley K


What else to do in Clusters Analyses?

I just read Geoffrey Jacquez's (2008) paper on “Spatial Cluster Analysis”. Chapter 22 In “The Handbook of Geographic Information Science”, S. Fotheringham and J. Wilson (Eds.). Blackwell Publishing, pages 395-416. I enjoyed reading the paper for the simple fact that it points to a broad range of considerations that should enter into mainstream cluster analysis … Continue reading What else to do in Clusters Analyses?