There is; if your question is about converting an object of class im (spatstat) to an object of class SpatialGridDataFrame (sp), it is in package maptools:
library(spatstat) whitenoise <- im(matrix(rnorm(1200),30,40)) library(maptools) x = as(as(whitenoise, "SpatialGridDataFrame"), "SpatialPixelsDataFrame") if your polygons are in SpatialPolygons object pol, then sel = overlay(x, pol) x.sel = x[!is.na(sel),] spplot(x.sel) should get you there. On 10/29/2010 09:28 PM, Peter Larson wrote: > Hello all, > > Is there any way to convert from spatstat to sp? > > Specifically, I am looking to clip a density plot produced in spatstat > to include only points within a polygon boundary in a shapefile. if > there is a way to clip in spatstat, this would also be acceptable. > > Any ideas? > > Thanks > > pete > > _______________________________________________ > R-sig-Geo mailing list > R-sig-Geo@stat.math.ethz.ch > https://stat.ethz.ch/mailman/listinfo/r-sig-geo -- Edzer Pebesma Institute for Geoinformatics (ifgi), University of Münster Weseler Straße 253, 48151 Münster, Germany. Phone: +49 251 8333081, Fax: +49 251 8339763 http://ifgi.uni-muenster.de http://www.52north.org/geostatistics e.pebe...@wwu.de _______________________________________________ R-sig-Geo mailing list R-sig-Geo@stat.math.ethz.ch https://stat.ethz.ch/mailman/listinfo/r-sig-geo
