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NAME

       v.proj   -  Re-projects  a  vector map from one location to the current
       location.

KEYWORDS

       vector, projection, transformation

SYNOPSIS

       v.proj
       v.proj help
       v.proj [-lz]  [input=name]  location=name  [mapset=name]   [dbase=path]
       [output=name]   [--overwrite]  [--verbose]  [--quiet]

   Flags:
       -l
           List vector maps in input location and exit

       -z
           Assume  z  co-ordinate  is  ellipsoidal  height  and  transform  if
           possible
           3D vector maps only

       --overwrite
           Allow output files to overwrite existing files

       --verbose
           Verbose module output

       --quiet
           Quiet module output

   Parameters:
       input=name
           Name of input vector map

       location=name
           Location containing input vector map

       mapset=name
           Mapset containing input vector map

       dbase=path
           Path to GRASS database of input location

       output=name
           Name for output vector map (default: input)

DESCRIPTION

       v.proj allows a user to convert a vector map in a specified mapset of a
       specified  location  (different  from current) with projection of input
       location to the vector map in a current mapset of current location with
       projection  of  current  location  (both  projections  are  defined  by
       corresponding PROJ_INFO files).

NOTES

       If output is not specified it is set to be the same as input map name.
       If mapset is not specified, its name is assumed to be the same  as  the
       current mapset's name.
       If dbase is not specified it is assumed to be the current database. The
       user only has to specify dbase if the  source  location  is  stored  in
       another separate GRASS database.

       v.proj supports general datum transformations, making use of the PROJ.4
       co-ordinate system translation library.

EXAMPLES


       v.proj in=mymap location=latlong mapset=user1

REFERENCES

       PROJ 4: Projection/datum support library.

       Further reading

                      ASPRS Grids and Datum

                      MapRef - The Collection of Map Projections and Reference
                     Systems for Europe

                      Projections Transform List (PROJ4)

SEE ALSO

         r.proj,  g.proj, g.setproj, i.rectify, r.stats, v.sample, v.surf.idw,
       v.surf.rst

AUTHORS

       Irina Kosinovsky, US ARMY CERL
       M.L. Holko, USDA, SCS, NHQ-CGIS
       R.L. Glenn, USDA, SCS, NHQ-CGIS

       Last changed: $Date: 2012-03-30 04:47:33 -0700 (Fri, 30 Mar 2012) $

       Full index

       © 2003-2013 GRASS Development Team



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