Re: [R-sig-Geo] identifying clusters between sets of points
Hi Sam. The spatstat package provides a variety of tools for working with multitype marked point patterns. See Part IV of Adrian Baddeley's spatstat workshop notes, which can be accessed here: http://www.csiro.au/resources/Spatial-Point-Patterns-in-R.html hth, Kingsford Jones On Wed, Apr 15, 2009 at 12:32 PM, Sam Veloz wrote: > I have 3 sets of points (A,B,C) with coordinates. I would like to test > whether points from group A are more spatially clustered around points in > group B or are points from group A more spatially clustered around points in > group C. Can anyone suggest a test(or r function) for doing this? > Thanks, > Sam > -- > > Sam Veloz > Postdoctoral Researcher > Department of Environmental Science and Policy > University of California, Davis > [email protected] > > ___ > R-sig-Geo mailing list > [email protected] > https://stat.ethz.ch/mailman/listinfo/r-sig-geo > ___ R-sig-Geo mailing list [email protected] https://stat.ethz.ch/mailman/listinfo/r-sig-geo
Re: [R-sig-Geo] identifying clusters between sets of points
I had thought Ripley's K was only for univariate situations but I just found the k12hat function in the splancs package for bivariate situations. I will give that a try. Thanks, Sam José Manuel Blanco Moreno wrote: I'm not sure that I have correctly understood your problem, but it sounds like the sort of problems that are usually solved through Ripley's K (or some of its derivatives: Condit's Omega, Pair Correlation Function, Circumcircle methods...) Good luck. José M. Blanco Sam Veloz escribió: I have 3 sets of points (A,B,C) with coordinates. I would like to test whether points from group A are more spatially clustered around points in group B or are points from group A more spatially clustered around points in group C. Can anyone suggest a test(or r function) for doing this? Thanks, Sam -- Sam Veloz Postdoctoral Researcher Department of Environmental Science and Policy University of California, Davis [email protected] ___ R-sig-Geo mailing list [email protected] https://stat.ethz.ch/mailman/listinfo/r-sig-geo
