[GRASS-dev] GEM Wizard question

[William Kyngesburye]

Is that from within GRASS, or other shell use?  Which platform?  If  
GRASS needs HOME as Hamish says, then it won't run without it (or not  
run right), so G_home() will always work.  Unless maybe the GRASS  
libraries are used outside of GRASS, like in Qgis or GDAL.

On May 23, 2007, at 1:43 AM, Michael Barton wrote:

> When I've tried to use home without checking for its existence  
> first, I've
> had reports of errors back from some users who claim that they do  
> not have
> HOME set to anything. So I always try to check to see if it is valid.
>
> Michael
>
>
> On 5/22/07 11:00 PM, "Hamish" <hamish_nospam at yahoo.com> wrote:
>
>> William Kyngesburye wrote:
>>> Note - there is a libgis function to get a user's home: G_home 
>>> ().  It
>>> should work on all platforms (it has a mingw special case, but maybe
>>> it doesn't work on the Win native build?).  It would be handy to  
>>> have
>>> a command equivalent to use in scripts, like g.home.
>>
>> Python/SWIG scripting:
>>>>> homedir=python_grass6.G_home()
>>>>> print homedir
>> /home/hamish
>>
>>
>> "~" is expanded by the shell AFAIK, so that requires a shell to  
>> expand.
>> "$HOME" works for me, where doesn't it work Michael?*
>>
>>
>> On ms windows there is %HOMEPATH% and %USERPROFILE%.
>> No idea how they differ,
>>
>> MS Windows Command shell overview:
>>
>> http://www.microsoft.com/resources/documentation/windows/xp/all/ 
>> proddocs/en-us
>> /ntcmds_shelloverview.mspx?mfr=true
>>
>>
>> [*] GRASS must know where home is, as that's where it looks  
>> for .grassrc6.
>>
>> lib/init/init.bat does:
>>   if "%HOME%"=="" set HOME=%USERPROFILE%
>>   set WINGISRC=%HOME%\.grassrc6
>>
>> lib/init/init.sh does:
>>   GISRCRC="$HOME/.grassrc6"
>>
>>
>> Hamish
>>
>>
>
> __________________________________________
> Michael Barton, Professor of Anthropology
> School of Human Evolution & Social Change
> Center for Social Dynamics & Complexity
> Arizona State University
>
> phone: 480-965-6213
> fax: 480-965-7671
> www: http://www.public.asu.edu/~cmbarton
>
>

-----
William Kyngesburye <kyngchaos*at*kyngchaos*dot*com>
http://www.kyngchaos.com/

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