v.proj(1) - Linux man page

Name

v.proj - Allows projection conversion of vector maps.

Keywords

vector, projection

Synopsis

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

Flags:

-l: List vector maps in input location and exit
-z: 3D vector maps only
Assume z co-ordinate is ellipsoidal height and transform if possible
--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=string: Location containing input vector map
mapset=string: Mapset containing input vector map
dbase=string: Path to GRASS database of input location
output=name: Name for output vector map

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 out is not specified it is set to be the same as input map 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.
If set is not specified, its name is assumed to be the same as the current mapset's name.

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)

Authors

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

Last changed: $Date: 2006-05-02 16:09:18 +0200 (Tue, 02 May 2006) $

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