[R-sig-Geo] mapping introduction

[Tomislav Hengl]

Dear Paulo,

I completely agree about SAGA. I have been monitoring the evolution of SAGA (or better to say of
Olaf Conrad) for quite some time. It is definitively one of the most extensive packages to analyze
DEMs, but also to do various grid computing (including geostatistics; see also my lecture notes
down-below).

I would be very much interested to see your R code-examples where you call SAGA operations. Olaf
told me that this functionality is still under construction (at least no instruction exists yet).

all the best,

Tom Hengl
http://spatial-analyst.net 

Hengl, T., 2007. A Practical Guide to Geostatistical Mapping of Environmental Variables. EUR 22904
EN Scientific and Technical Research series, Office for Official Publications of the European
Communities, Luxemburg, 143 pp.
http://eusoils.jrc.it/ESDB_Archive/eusoils_docs/other/EUR22904en.pdf 


-----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
Paulo van Breugel
Sent: maandag 26 november 2007 12:55
To: tomfool at as220.org
Cc: r-sig-geo at stat.math.ethz.ch
Subject: Re: [R-sig-Geo] mapping introduction

Hi Tom,

In addition to the (very useful) earlier posts, I would like to point 
out SAGA GIS. It is a very good GIS software (and freeware / open 
source), especially for grid analyses. It has a command line version, 
which together with the ability of R to  invoke system commands using 
either 'Shell' or 'system' makes it fairly easy to do the typical GIS 
work in SAGA, and carry out other analyses in R, all from within R. With 
the recent release of the RSAGA package for R this has become 
considerably easier.

The documentation for SAGA is somewhat poor, but there are two very 
useful user guides available. See the SAGA website 
(http://www.saga-gis.uni-goettingen.de/html/index.php) for links. See 
CRAN for the RSAGA package.

Paulo

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