On Wednesday 28 July 2010, Waichler, Scott R wrote: > > > I have a text file with x, y, z data from a LIDAR survey. Can someone > > > suggest a method to use to derive a Spatial Pixels or Spatial Grid > > > > object > > > > > from these? The spacing is not exactly regular of course. The data > > > are dense over all of the domain except for some blank areas, which I > > > would like to designate as NA. > > > > > > I am open to using most packages and functions, but don't want to use > > > GRASS. > > > > > > Scott > > > > Any particular reason not to use GRASS? In most cases it will scale to > > very > > large point datasets very nicely. Specifically, see the module r.in.xyz > > I don't have GRASS installed and my system admin indicated it may be > involved to do so. Plus, I don't know anything about it. I was hoping to > use a native R solution. I do have GDAL and rgdal installed. > > Scott
Understandable. There is a fairly simple Windows installer available. But if it is an R-based solution you are looking for, perhaps there are others on the list with more ideas. -- Dylan Beaudette Soil Resource Laboratory http://casoilresource.lawr.ucdavis.edu/ University of California at Davis 530.754.7341 _______________________________________________ R-sig-Geo mailing list [email protected] https://stat.ethz.ch/mailman/listinfo/r-sig-geo
