Polytechnic University of Valencia Congress, 1st Congress in Geomatics Engineering

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APLICACIÓN DE ÍNDICES DE FORMA EN LA DETERMINACIÓN DE POLÍGONOS SLIVERS DERIVADOS DE LAS DIMENSIONES LINEALES DE UNA FIGURA Y SU ÁREA
Miguel Sánchez Marco, Áurea Gallego Salguero

Last modified: 19-10-2017

Abstract


Nowadays cartography is more and more required by users, companies and government agencies. A lot of tasks need digital, updated and quality cartography: Civil work design, planning, landscaping, environmental impact, conservation, etc. This need of cartography is mostly solved by spatial data infrastructures and map servers that make downloading and getting maps easy. Later, using Geographical Information Systems (GIS) it is quite easy to perform queries and geoprocessing operations in order to get valuable information which is difficult to get with other tools. However slivers polygons are a serious problem. They can alter the results in spatial analysis, queries and map portray. A map with sliver polygons is a map with false polygons and therefore with errors. We need to remove them. Removing sliver polygons is simple once they have been located. The real problem is to manage to locate them. Some sliver polygons are small, others are large but in both cases sliver polygons are difficult to locate and tell them apart from other polygons. Scientists have used formulas to calculate the shape of objects for many years. Today there are dozens of formulas available that could be used in the characterization and location of polygons slivers. In this article many of these shape formulas are analyzed and conclusions are drawn on whether they can be used in locating sliver polygons.

http://dx.doi.org/10.4995/CIGeo2017.2017.6567


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