v.cd.areas.html

<h2>DESCRIPTION</h2>

<em>v.cd.areas</em> calculates differences between two vector layers
(e.g. classification and reference) by making use of v.overlay with
operator "xor". <p>
Only differences with a defined minimum size are extracted.
Optionally, quality measures <i>completeness</i> and <i>correctness</i> can
be calculated.

<h2>EXAMPLE</h2>

<h3>Difference between extracted buildings and buildings included in ALKIS
  using a tile size of 2000m</h3>

<div class="code"><pre>
v.cd.areas input=extracted_buildings reference=ALKIS_buildings min_size=10 output=difference_buildings tile_size=2000
</pre></div>

<h2>SEE ALSO</h2>

<em>
<a href="https://grass.osgeo.org/grass-stable/manuals/v.overlay.html">v.overlay</a>,
<a href="https://grass.osgeo.org/grass-stable/manuals/v.to.db.html">v.to.db</a>,
<a href="https://grass.osgeo.org/grass-stable/manuals/v.db.droprow.html">v.db.droprow</a>
</em>

<h2>AUTHOR</h2>

Julia Haas, <a href="https://www.mundialis.de/">mundialis GmbH &amp; Co. KG</a>