Hi Tim,
You should run R from within the GRASS shell
environment. So launch a terminal and run GRASS,
select a GRASS location and mapset, and then from
within the GRASS shell, run R. You should then be able
to read/write GRASS rasters from R.
Regards,
Daniel.
Tim Holland wrote:
Hi Daniel,
No, as it was I was trying to run things through R. Grass was (is)
running, but just incidentally. Your comment made me think I needed
to run initGRASS() first, so I tried, but got the following:
> initGRASS(gisBase="/Library/GRASS/6.4",
gisDbase="/Users/timholland/Documents/GIS/Vietnam_General/VN_GrassDbase")
Error in initGRASS(gisBase = "/Library/GRASS/6.4", gisDbase =
"/Users/timholland/Documents/GIS/Vietnam_General/VN_GrassDbase") :
A GISRC file already exists; to override, set override=TRUE
Should I be running R through GRASS? (as opposed to vice-versa, as
had been my understanding). If so, how do I do that?
Again, sorry for really basic questions, but thank you for the help.
Best,
Tim
On Wed, Oct 7, 2009 at 3:52 PM, Daniel McInerney
<[email protected] <mailto:[email protected]>> wrote:
Hi Tim,
Is R running within a GRASS session?
Regards,
Daniel.
Tim Holland wrote:
Hello,
I'm sorry to keep making so much noise on the list for what
I'm sure are
basic questions.
I am having trouble loading in a GRASS raster into R using the
readRAST6
command.
Using:
readRAST6("rasterMap",mapset="/Users/etc/my_mapset")
I get the following error:
Error in if (file.exists(file) == FALSE) if
(!missing(asText) && asText ==
: argument is of length zero
Error in parseGRASS(cmd) : g.region not parsed
sh: g.region: command not found
Is there something I am doing wrong here?
Also, when I am working with spgrass6 in general, should I
have my working
directory set to the GRASS DBase I am using, or does that
matter?
Thank you for the help, Tim
sessionInfo()
R version 2.9.2 (2009-08-24) i386-apple-darwin8.11.1
locale:
en_US.UTF-8/en_US.UTF-8/C/C/en_US.UTF-8/en_US.UTF-8
attached base packages:
[1] stats graphics grDevices utils datasets methods
base
other attached packages:
[1] spgrass6_0.6-9 XML_2.6-0 rgdal_0.6-12 sp_0.9-44
loaded via a namespace (and not attached):
[1] grid_2.9.2 lattice_0.17-25
_______________________________________________
grass-stats mailing list
[email protected]
http://lists.osgeo.org/mailman/listinfo/grass-stats
