-----Original Message-----
From: r-sig-geo-bounces at stat.math.ethz.ch [mailto:r-sig-geo-bounces at stat.math.ethz.ch] On Behalf
Of milton ruser
Sent: Wednesday, July 22, 2009 6:57 AM
To: Scanlan, Craig
Cc: r-sig-geo at stat.math.ethz.ch
Subject: Re: [R-sig-Geo] DEM in R
Hi Craig,
I think you can use several ways of generate your DEM from xyz points.
One is you use interp function on akima package.
For derive slope and aspect, may be you can use R with GRASS (package
spgrass6) or R with SAGA (package RSAGA).
How about you give a look at:
http://spatial-analyst.net/wiki/index.php?title=Main_Page or
http://www.geomorphometry.org/
bests
milton
brazil=toronto
On Tue, Jul 21, 2009 at 8:27 PM, Scanlan, Craig <
craig.scanlan at agric.wa.gov.au> wrote:
Hi,
I need to create a matrix of elevation data to plot with persp(). I have
data in the form of vectors x,y and z. Also, I need to be able to derive
attributes like slope and aspect from the DEM. I have not been able to
find any examples of these problems. Are there any available? Any
suggestions?
Thanks
Craig.
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