[GRASS-user] what is requried when import data to grass?

[Micha Silver]

maven apache wrote:

>     Is there some special reason you need to create the GRASS
>     directory structure programatically each time? Can't you just start
>
> As the pywps I have refered,each client(user) may send their own 
> process request with different map,obvirous they do not have the save 
> location or mapset even the projection,so if config the grass only 
> once ,do the location and mapset accord with the user requested map?
Well, no. Each location has a specific coordinate reference system, set 
up when you create the location.  Any data pulled into that location 
should match that CRS.
I don't recall the start of your thread:  Are you saying that you need 
to be able to handle any data that clients throw at you in *any* CRS?  
How will you know the CRS of the client's maps? (Many data formats do 
not require full metadata with CRS information)

And one other point came to my mind: be aware that the user calling the 
GRASS script must be the owner of the $GISDBASE directory structure. So 
if these are web based apps, then the user running your http server must 
own the GRASS database directory.

Good luck, and keep us posted,
-- 
Micha
 
>
>     GRASS once the straight-forward way to make the required location,
>     mapset and files, then use the instructions here:
>     http://grass.osgeo.org/wiki/GRASS_and_Shell
>     to run your grass commands from a shell/python script?
>
> I read the shell,actually I am using another script in the annex,and I 
> think they have the same thought.
> 2009/6/11 Micha Silver <micha at arava.co.il <mailto:micha at arava.co.il>>
>
>     maven apache wrote:
>>     Hi:
>>     I followed the doc from the web resrouce:
>>     https://svn.wald.intevation.org/svn/pywps/tags/pywps-3.1.0/pywps/Grass.py
>>     And I think what we are doing is similar to theirs,so I thought
>>     the confignation of grass maybe correct for us.
>     Is there some special reason you need to create the GRASS
>     directory structure programatically each time? Can't you just
>     start GRASS once the straight-forward way to make the required
>     location, mapset and files, then use the instructions here:
>     http://grass.osgeo.org/wiki/GRASS_and_Shell
>     to run your grass commands from a shell/python script?
>
>     -- 
>     Micha
>      
>>     2009/6/11 Nikos Alexandris
>>     <nikos.alexandris at felis.uni-freiburg.de
>>     <mailto:nikos.alexandris at felis.uni-freiburg.de>>
>>
>>
>>         maven:
>>         > And I know the reason of the problem now.
>>
>>         Which is?
>>
>>
>>         > However as what you said,I should create a new location and
>>         mapset if
>>         > necessary,it does not work.
>>         > I create two folders nLocation/nmapset and create a wind
>>         file in the
>>         > nmapset dir, however when I run the grass gui,I also can
>>         not seclect
>>         > the new location to enter.
>>
>>         Sorry, I never create manually those directories and the WIND
>>         file. I
>>         always use the "recommended" way, that is through GRASS.
>>
>>         Read _A)_ or/ and _B)_ in:
>>         http://grass.osgeo.org/grass64/manuals/html64_user/helptext.html
>>
>>
>>         > It throw the error message:the selection location
>>         [nlocation ]is not
>>         > valide. Is the procedure I create the new location is wrong? I
>>         > followed the maual
>>
>>         Which manual?
>>
>>         Nikos
>>
>>
>>
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