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- <h2>DESCRIPTION</h2>
- GRASS defines vector areas as composite entities consisting of a set of
- closed boundaries and a centroid. The attribute information associated
- with that area is linked to the centroid. The <em>v.centroids</em> module
- adds centroids to closed boundaries in the <b>input</b> file and assigns a
- category number to them. The starting value as well as the increment size
- may be set using optional parameters.
- <p>Multiple attributes may be linked to a single vector entity through
- numbered fields referred to as layers. Refer to <em>v.category</em>
- for more details, as <em>v.centroids</em> is simply a frontend to that
- module.
- <p>The boundary itself is often stored without any category reference as it
- can mark the border between two adjacent areas. Thus it would be ambiguous
- as to which feature the attribute would belong. In some cases it may, for
- example, represent a road between two parcels of land. In this case it
- is entirely appropriate for the boundary to contain category information.
- <h2>SEE ALSO</h2>
- <em>
- <a href="v.category.html">v.category</a>
- </em>
- <h2>AUTHORS</h2>
- module: M. Hamish Bowman, Dept. Marine Science, Otago University, New Zealand
- <br>
- help page: Trevor Wiens
- <p><i>Last changed: $Date$</i>
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