<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"> <html> <head> <title>GRASS GIS: v.proj</title> <meta http-equiv="Content-Type" content="text/html; charset=iso-8859-1"> <link rel="stylesheet" href="grassdocs.css" type="text/css"> </head> <body bgcolor="white"> <img src="grass_logo.png" alt="GRASS logo"><hr align=center size=6 noshade> <h2>NAME</h2> <em><b>v.proj</b></em> - Allows projection conversion of vector maps. <h2>KEYWORDS</h2> vector, projection <h2>SYNOPSIS</h2> <b>v.proj</b><br> <b>v.proj help</b><br> <b>v.proj</b> [-<b>lz</b>] [<b>input</b>=<em>name</em>] <b>location</b>=<em>string</em> [<b>mapset</b>=<em>string</em>] [<b>dbase</b>=<em>string</em>] [<b>output</b>=<em>name</em>] [--<b>overwrite</b>] [--<b>verbose</b>] [--<b>quiet</b>] <h3>Flags:</h3> <DL> <DT><b>-l</b></DT> <DD>List vector maps in input location and exit</DD> <DT><b>-z</b></DT> <DD>3D vector maps only</DD> <DD>Assume z co-ordinate is ellipsoidal height and transform if possible</DD> <DT><b>--overwrite</b></DT> <DD>Allow output files to overwrite existing files</DD> <DT><b>--verbose</b></DT> <DD>Verbose module output</DD> <DT><b>--quiet</b></DT> <DD>Quiet module output</DD> </DL> <h3>Parameters:</h3> <DL> <DT><b>input</b>=<em>name</em></DT> <DD>Name of input vector map</DD> <DT><b>location</b>=<em>string</em></DT> <DD>Location containing input vector map</DD> <DT><b>mapset</b>=<em>string</em></DT> <DD>Mapset containing input vector map</DD> <DT><b>dbase</b>=<em>string</em></DT> <DD>Path to GRASS database of input location</DD> <DT><b>output</b>=<em>name</em></DT> <DD>Name for output vector map</DD> </DL> <H2>DESCRIPTION</H2> <em>v.proj</em> 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). <H2>NOTES</H2> If <B>out</B> is not specified it is set to be the same as input map name. <BR> If <B>dbase</B> is not specified it is assumed to be the current database. The user only has to specify <B>dbase</B> if the source location is stored in another separate GRASS database. <BR> If <B>set</B> is not specified, its name is assumed to be the same as the current mapset's name. <P> <EM>v.proj</EM> supports general datum transformations, making use of the <EM>PROJ.4</EM> co-ordinate system translation library. </P> <H2>EXAMPLES</H2> <div class="code"><pre> v.proj in=mymap location=latlong mapset=user1 </pre></div> <H2>REFERENCES</H2> <a href=http://proj.maptools.org/>PROJ 4</a>: Projection/datum support library. <P> <B>Further reading</B> <ul> <li> <a href="http://www.asprs.org/resources/grids/">ASPRS Grids and Datum</a> <li> <a href="http://www.mapref.org">MapRef - The Collection of Map Projections and Reference Systems for Europe</a> <li> <a href="http://www.remotesensing.org/geotiff/proj_list/">Projections Transform List</a> (PROJ4) </ul> <H2>SEE ALSO</H2> <EM> <A HREF="r.proj.html">r.proj</A>, <A HREF="g.proj.html">g.proj</A>, <A HREF="g.setproj.html">g.setproj</A>, <A HREF="i.rectify.html">i.rectify</A>, <A HREF="r.stats.html">r.stats</A>, <A HREF="v.sample.html">v.sample</A>, <A HREF="v.surf.idw.html">v.surf.idw</A>, <A HREF="v.surf.rst.html">v.surf.rst</A> </EM> <H2>AUTHORS</H2> Irina Kosinovsky, US ARMY CERL <BR> M.L. Holko, USDA, SCS, NHQ-CGIS <BR> R.L. Glenn, USDA, SCS, NHQ-CGIS <p><i>Last changed: $Date: 2006-05-02 16:09:18 +0200 (Tue, 02 May 2006) $</i> <HR> <P><a href="index.html">Main index</a> - <a href="vector.html">vector index</a> - <a href="full_index.html">Full index</a></P> <P>© 2003-2008 <a href="http://grass.osgeo.org">GRASS Development Team</a></p> </body> </html>
