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Triangulation method for area-line geometry-type changes in map generalisation / H. Selvi in Cartographic journal (the), vol 47 n° 2 (May 2010)  

Public [article]  inCartographic journal (the) > vol 47 n° 2 (May 2010) . - pp 157 - 163 Titre : Triangulation method for area-line geometry-type changes in map generalisation Type de document : Article/Communication Auteurs : H. Selvi, Auteur ; O. Bildirici, Auteur ; M. Yerci, Auteur Année de publication : 2010 Article en page(s) : pp 157 - 163 Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Termes IGN] axe médian [Termes IGN] données vectorielles [Termes IGN] généralisation cartographique automatisée [Termes IGN] modèle topologique spaghetti [Termes IGN] système d'information géographique [Termes IGN] triangulation de Delaunay [Termes IGN] Visual Basic [Vedettes matières IGN] Généralisation Résumé : (Auteur) Changes in object geometry-type such as area to line are necessary in terms of the requirements of cartographic generalisation, and also for the creation of the network topology in geographical information systems. Geometry-type changes that reduce dimension include area-line, area-point and line-point changes. This study focuses on area-line changes. Since the area objects have different shapes, there is no unique solution that works in all possible situations. Well-known methods for area-line changes include triangulation, water lining, straight skeletons, etc. In this paper, an approach based on triangulation is introduced for creating road centerlines from blocks of parcels. Spaghetti large-scale map data are taken into consideration in this approach in which blocks of parcels are captured as polygons and roads are represented by the space between them. In order to implement this approach, a subprogram (script) is developed under the NETCAD software package - a Turkish CAD-GIS software package - with the Visual Basic scripting language. This subprogram also includes post-processing routines for the relevant node creation at road crossings, and delivers acceptable results for the centerlines; however, the post-processing needs to be improved. Numéro de notice : A2010-261 Affiliation des auteurs : non IGN Thématique : GEOMATIQUE/INFORMATIQUE Nature : Article nature-HAL : ArtAvecCL-RevueIntern DOI : 10.1179/000870409X12584524218965 Date de publication en ligne : 18/07/2013 En ligne : https://doi.org/10.1179/000870409X12584524218965 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=30455 [article]

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