On Tue, 6 Jul 2010, Pinaud David wrote:
Dear all,
I'm trying to use the GRASS function "r.mapcalc" using R package "spgrass6",
but I've got some trouble with it, I'm not even able to parse this function:
library(rgdal)
Le chargement a nécessité le package : sp
Geospatial Data Abstraction Library extensions to R successfully loaded
Loaded GDAL runtime: GDAL 1.7.1, released 2010/02/08
Path to GDAL shared files: C:/PROGRA~1/R/R-211~1.1/library/rgdal/gdal
Loaded PROJ.4 runtime: Rel. 4.7.1, 23 September 2009
Path to PROJ.4 shared files: C:/PROGRA~1/R/R-211~1.1/library/rgdal/proj
library(spgrass6)
Le chargement a nécessité le package : XML
GRASS GIS interface loaded with GRASS version: (GRASS not running)
parseGRASS("r.mapcalc")
Error : syntax error, unexpected '-', expecting NAME or STRING
Parse error does not seem to be XML, nor to identify a file name
Erreur dans parseGRASS("r.mapcalc") : r.mapcalc not parsed
You cannot use r.mapcalc with execGRASS for obvious reasons - r.mapcalc
wants to handle input itself. Use r.mapcalculator instead for scripting.
or use r.mapcalcs directly.
Hope this helps,
Roger
I tried to change the XML encoding by
setXMLencoding("latin1")
without success.
For example,
parseGRASS("g.region")
is correctly running, I've got the description of the function.
Otherwise, my calculus with "r.mapcalc" within GRASS 6.4.0 is correctly
running.
sessionInfo()
R version 2.11.1 (2010-05-31)
i386-pc-mingw32
locale:
[1] LC_COLLATE=French_France.1252 LC_CTYPE=French_France.1252
LC_MONETARY=French_France.1252
[4] LC_NUMERIC=C LC_TIME=French_France.1252
attached base packages:
[1] stats graphics grDevices utils datasets methods base
other attached packages:
[1] spgrass6_0.6-16 XML_3.1-0 rgdal_0.6-27 sp_0.9-65
loaded via a namespace (and not attached):
[1] grid_2.11.1 lattice_0.18-8 tools_2.11.1
get("SYS", envir = .GRASS_CACHE)
[1] "WinNat"
Am I missing something? Any idea?
Thank you very much for your help and patience.
David
--
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.biv...@nhh.no
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