Geografic-Information-System/scripts/v.to.3d/v.to.3d.html

<h2>DESCRIPTION</h2>

The <em>v.to.3d</em> module is used to transform 2D vector features
to 3D. Height (z-coordinate) of 3D vector features can be specified
by <b>height</b> parameter as fixed value or by <b>column</b>
parameter.

<h2>EXAMPLES</h2>

<div class="code"><pre>
# convert z-values from string to double
v.db.addcol map=geodetic_pts columns="Z_VALUE_D double precision"
v.db.update map=geodetic_pts column=Z_VALUE_D qcolumn=Z_VALUE
v.db.select map=geodetic_pts columns=cat,Z_VALUE,Z_VALUE_

# convert 2D vector point map to 3D based on attribute
v.to.3d input=geodetic_pts out=geodetic_pts_3d column=Z_VALUE_D
</pre></div>

<h2>TODO</h2>

<ul>
  <li>Implement reverse transformation</li>
</ul>

<h2>SEE ALSO</h2>

<em>
<a href="v.transform.html">v.transform</a>,
<a href="v.extrude.html">v.extrude</a>,
<a href="v.drape.html">v.drape</a>
</em>

<h2>AUTHORS</h2>

Martin Landa, CTU in Prague, Czech Republic

<p>
<i>Last changed: $Date$</i>