[GRASS-stats] "g.region: command not found" using readRAST6 command

[Tim Holland]

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 <daniel.mcinerney at ucd.ie>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
>>
>>
>>
>>
>
>
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