[R-sig-Geo] Methods for working with LIDAR data
debeaudette at ucdavis.edu
Wed Jul 28 20:31:19 CEST 2010
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.
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.
Soil Resource Laboratory
University of California at Davis
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