Jeff, you may want to have a look at function spsample in package sp. -- Edzer
Jeffrey Stratford wrote: > Hi, is there a way to sample an ESRI grid using random sample points? > In the past I used ESRI's spatial analyst but I would like to switch all > my analyses to R if possible. The grid is from the National Land Cover > Dataset (30m res, 7 landcover classes). I had roadside points from > which I extracted data such as % grassland, % pine, etc in buffers of > 90, 210, and 990 m radii. I would like to generate 200 random samples > from the same map to compare the roadside points to random samples (and, > hopefully, there are no differences). Make sense? Hope so. > > Thanks, > > Jeff > > **************************************** > Jeffrey A. Stratford, Ph.D. > Postdoctoral Associate > 331 Funchess Hall > Department of Biological Sciences > Auburn University > Auburn, AL 36849 > 334-329-9198 > FAX 334-844-9234 > http://www.auburn.edu/~stratja > > _______________________________________________ > R-sig-Geo mailing list > R-sig-Geo@stat.math.ethz.ch > https://stat.ethz.ch/mailman/listinfo/r-sig-geo > _______________________________________________ R-sig-Geo mailing list R-sig-Geo@stat.math.ethz.ch https://stat.ethz.ch/mailman/listinfo/r-sig-geo
