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- Triangulated_irregular_network abstract "A triangulated irregular network (TIN) is a digital data structure used in a geographic information system (GIS) for the representation of a surface. A TIN is a vector-based representation of the physical land surface or sea bottom, made up of irregularly distributed nodes and lines with three-dimensional coordinates (x, y, and z) that are arranged in a network of nonoverlapping triangles. TINs are often derived from the elevation data of a rasterized digital elevation model (DEM). An advantage of using a TIN over a raster DEM in mapping and analysis is that the points of a TIN are distributed variably based on an algorithm that determines which points are most necessary to an accurate representation of the terrain. Data input is therefore flexible and fewer points need to be stored than in a raster DEM, with regularly distributed points. A TIN may be less suited than a raster DEM for certain kinds of GIS applications, such as analysis of a surface's slope and aspect. TINs were first invented by Phil Mellor whilst studying Sociology at University of Edinburgh.[citation needed]A TIN comprises a triangular network of vertices, known as mass points, with associated coordinates in three dimensions connected by edges to form a triangular tessellation. Three-dimensional visualizations are readily created by rendering of the triangular facets. In regions where there is little variation in surface height, the points may be widely spaced whereas in areas of more intense variation in height the point density is increased. A TIN is typically based on a Delaunay triangulation, but its utility will be limited by the selection of input data points: well-chosen points will be located so as to capture significant changes in surface form, such as topographical summits, breaks of slope, ridges, valley floors, pits, and cols.Although usually associated with three-dimensional data (x, y, and z) and topography, TINs are also useful for the description and analysis of general horizontal (x and y) distributions and relationships.The first triangulated irregular network program for GIS was written by W. Randolph Franklin, under the direction of David Douglas and Thomas Peucker (Poiker), at Simon Fraser University in 1973.".
- Triangulated_irregular_network thumbnail Digitales_Geländemodell.png?width=300.
- Triangulated_irregular_network wikiPageID "2857072".
- Triangulated_irregular_network wikiPageRevisionID "592026193".
- Triangulated_irregular_network hasPhotoCollection Triangulated_irregular_network.
- Triangulated_irregular_network subject Category:Cartography.
- Triangulated_irregular_network subject Category:Geography.
- Triangulated_irregular_network subject Category:Geometric_data_structures.
- Triangulated_irregular_network subject Category:Triangulation_(geometry).
- Triangulated_irregular_network comment "A triangulated irregular network (TIN) is a digital data structure used in a geographic information system (GIS) for the representation of a surface. A TIN is a vector-based representation of the physical land surface or sea bottom, made up of irregularly distributed nodes and lines with three-dimensional coordinates (x, y, and z) that are arranged in a network of nonoverlapping triangles. TINs are often derived from the elevation data of a rasterized digital elevation model (DEM).".
- Triangulated_irregular_network label "Red irregular de triángulos".
- Triangulated_irregular_network label "TIN".
- Triangulated_irregular_network label "TIN".
- Triangulated_irregular_network label "Triangular Irregular Network".
- Triangulated_irregular_network label "Triangulated irregular network".
- Triangulated_irregular_network label "Unregelmäßiges Dreiecksnetz".
- Triangulated_irregular_network label "Vertice geodetico".
- Triangulated_irregular_network label "شبكة مثلثات غير منتظمة".
- Triangulated_irregular_network label "不规则三角形格网".
- Triangulated_irregular_network sameAs Unregelmäßiges_Dreiecksnetz.
- Triangulated_irregular_network sameAs Red_irregular_de_triángulos.
- Triangulated_irregular_network sameAs Vertice_geodetico.
- Triangulated_irregular_network sameAs TIN.
- Triangulated_irregular_network sameAs Triangular_Irregular_Network.
- Triangulated_irregular_network sameAs TIN.
- Triangulated_irregular_network sameAs m.087691.
- Triangulated_irregular_network sameAs Q2296387.
- Triangulated_irregular_network sameAs Q2296387.
- Triangulated_irregular_network wasDerivedFrom Triangulated_irregular_network?oldid=592026193.
- Triangulated_irregular_network depiction Digitales_Geländemodell.png.
- Triangulated_irregular_network isPrimaryTopicOf Triangulated_irregular_network.
