[GRASS-user] v.in.ogr and g.region trouble coordenate

GRASS GRASS user
1

hello.
how to make g.region and v.in.ogr use the same projection that an incoming file. since at run-d g.region v.in.ogr and maintaining the coordinates but not the coordinate system, given the same coordinate system of the lease, what should I do to keep your incoming file coordinate system .

thanks for your help and attention

Ricardo Rodríguez
Univalle

2

Maybe to clear up some concepts.
First your GRASS Location should be created from the start with the same Coordinate system as the incoming files. GRASS checks that the incoming file and the LOCATION CRS are the same.
Second, g.region does not alter the projection or coordinate system. (Only the region; that is the current X-Y bounds).
Third, it’s possible to have GRASS ignore the coordinate system of the input file by using the -c option to v.in.ogr. But you should use this option only if you know for sure that the LOCATION CRS and the incoming file CRS are the same.
Fourth, if the input file has a properly defined CRS, you can use v.in.ogr to create a whole new LOCATION based on that CRS. See the ‘location=’ parameter.

··· 
-- 
Micha Silver
Arava Development Co. +972-52-3665918
[http://surfaces.co.il](http://surfaces.co.il)
3

hi, thanks for answering I understand your answer but if my location has an arbitrary coordinate system, there will be no way to keep the coordinate system of the incoming file

Ricardo Rodríguez
Univalle

4

On 10/21/2010 11:35 PM, Ricardo Rodríguez wrote:

hi, thanks for answering I understand your answer but if my location has an arbitrary coordinate system, there will be no way to keep the coordinate system of the incoming file

What do you mean by an "arbitrary" coordinate system?

Ricardo Rodríguez
Univalle

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--
Micha Silver
Arava Development Co. +972-52-3665918
http://www.surfaces.co.il