[R-sig-Geo] a problem with g.gisenv while running grass from R via spgrass6 on macosx

[Roger Bivand]

On Mon, 22 Nov 2010, Jan Verbesselt wrote:

> Hi,
>
> I am trying to run grass from R via the spgrass6 package on MacOSx while
> following this nice Wiki. I have installed the spgrass6 package from source
> on mac. grass-6.4 is also installed via the great website of KingChaos (
> http://www.kyngchaos.com/software/grass).
>
>> library(spgrass6)
> Loading required package: sp
> Loading required package: rgdal
> Geospatial Data Abstraction Library extensions to R successfully loaded
> Loaded GDAL runtime: GDAL 1.7.2, released 2010/04/23
> Path to GDAL shared files:
> /Library/Frameworks/GDAL.framework/Versions/1.7/Resources/gdal
> Loaded PROJ.4 runtime: Rel. 4.7.1, 23 September 2009
> Path to PROJ.4 shared files: (autodetected)
> Loading required package: XML
> GRASS GIS interface loaded with GRASS version: (GRASS not running)
>
> when trying the following:
>> loc <- initGRASS("/Applications/GRASS-6.4.app", home=tempdir())

What this is saying is that the string is not "the directory path to GRASS 
binaries and libraries" for your platform. For me:

> list.files("/home/rsb/topics/grass/g640/grass-6.4.0")
  [1] "AUTHORS"           "bin"               "bwidget"
  [4] "CHANGES"           "COPYING"           "docs"
  [7] "driver"            "etc"               "fonts"
[10] "GPL.TXT"           "include"           "lib"
[13] "man"               "REQUIREMENTS.html" "scripts"
[16] "tools"

so when you see something similar for the directory path on your system, 
you will have found the incantation.

If you don't make progress, please consider moving this thread to the 
grass-stats list:

http://lists.osgeo.org/mailman/listinfo/grass-stats

where there may be users with the same platform.

Roger

>
> I obtain the following error:
> /bin/sh: g.gisenv: command not found
> /bin/sh: g.gisenv: command not found
> /bin/sh: g.gisenv: command not found
> /bin/sh: g.gisenv: command not found
> /bin/sh: g.gisenv: command not found
> Error in system(cmd0, intern = TRUE) : error in running command
> Error in parseGRASS(cmd) : g.region not found
> sh: g.region: command not found
>
> Is there a solution?
>
> I am learning GRASS at the moment to visualise and explore 3D terrestrial
> point lidar datasets (las format) and analyse subsets via R.
>
> Thanks,
> Jan
>
> 	[[alternative HTML version deleted]]
>
> _______________________________________________
> R-sig-Geo mailing list
> R-sig-Geo at stat.math.ethz.ch
> https://stat.ethz.ch/mailman/listinfo/r-sig-geo
>

-- 
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