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<title>GRASS GIS manual: v.build</title>
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<h2>NAME</h2>
<em><b>v.build</b></em> - Creates topology for GRASS vector map.
<h2>KEYWORDS</h2>
vector, topology
<h2>SYNOPSIS</h2>
<b>v.build</b><br>
<b>v.build help</b><br>
<b>v.build</b> <b>map</b>=<em>name</em> [<b>error</b>=<em>name</em>] [<b>option</b>=<em>string</em>[,<i>string</i>,...]] [--<b>overwrite</b>] [--<b>verbose</b>] [--<b>quiet</b>]
<h3>Flags:</h3>
<DL>
<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>map</b>=<em>name</em></DT>
<DD>Name of input vector map</DD>
<DT><b>error</b>=<em>name</em></DT>
<DD>Name for vector map where erroneous vector features are written to</DD>
<DT><b>option</b>=<em>string[,<i>string</i>,...]</em></DT>
<DD>Build topology or dump topology or spatial index to stdout</DD>
<DD>Options: <em>build,dump,sdump,cdump</em></DD>
<DD>Default: <em>build</em></DD>
<DD><b>build</b>: build topology</DD>
<DD><b>dump</b>: write topology to stdout</DD>
<DD><b>sdump</b>: write spatial index to stdout</DD>
<DD><b>cdump</b>: write category index to stdout</DD>
</DL>
<h2>DESCRIPTION</h2>
<em>v.build</em> builds support files for (binary)
GRASS vector data files. These support files supply
topology and category information that are needed by other
GRASS modules.
<p>
GRASS is generating these support files automatically,
only in rare cases the user has to (re)build them.
<p>
Refer to
<em><a href="vectorintro.html">Vector data processing in GRASS GIS</a></em>
for more information on GRASS GIS vector data model.
<h2>NOTES</h2>
<em>v.build</em> creates support files only for binary
vector maps located in the user's current mapset. If vector map
is located in another mapset, you need to specify this:
<p>
<div class="code"><pre>
v.build map=geology@PERMANENT
</pre></div>
<p>
In case of errors, the user can optionally generate an <em>error</em>
vector map containing the erroneous vectors for later inspection.
<h2>SEE ALSO</h2>
<em><a href="v.build.polylines.html">v.build.polylines</a></em>
<h2>AUTHORS</h2>
Dave Gerdes, U.S.Army Construction Engineering
Research Laboratory,<br>
Michael Higgins,
U.S.Army Construction Engineering
Research Laboratory,<br>
Radim Blazek, ITC-irst, Trento, Italy
<p><i>Last changed: $Date: 2011-11-08 01:42:51 -0800 (Tue, 08 Nov 2011) $</i>
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