[R-sig-Geo] coarsening a grid

[Andy Bunn]

> -----Original Message-----
> From: r-sig-geo-bounces at r-project.org [mailto:r-sig-geo-bounces at r-
> project.org] On Behalf Of Roger Bivand
> Sent: Tuesday, May 24, 2011 2:03 PM
> To: Nick Matzke
> Cc: r-sig-geo at stat.math.ethz.ch
> Subject: Re: [R-sig-Geo] coarsening a grid
> 
> On Tue, 24 May 2011, Nick Matzke wrote:
> 
> > Hi all,
> >
> > Maybe this is obvious but I can't seem to find anything on it.
> >
> > I have loaded and displayed a small DEM grid (6 MB) with readGDAL.
> >
> > Is there an easy way to coarsen it or downsample it?

aggregate() in raster is useful/fast as well.


> 
> You can downsample it when reading in, see the output.dim= argument to
> readGDAL() and its use in the examples there.
> 
> Roger
> 
> >
> > Cheers!
> > Nick
> >
> >
> >
> 
> --
> Roger Bivand
> Economic Geography Section, Department of Economics, Norwegian School
> of
> Economics and Business Administration, Helleveien 30, N-5045 Bergen,
> Norway. voice: +47 55 95 93 55; fax +47 55 95 95 43
> e-mail: Roger.Bivand at nhh.no
> 
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