Last edited 21 Oct 2022
Triangulated irregular network
The Geospatial Glossary, published by the Geospatial Commission, and accessed on 17 September 2022, defines a triangulated irregular network as: ‘…a vector data structure that represents a surface in three dimensions. Masspoints (or z-values) are joined up as irregular triangles to form a surface to provide a more accurate and less dense method of representing a Digital Terrain Model. This is because the edges of features are preserved and masspoints are only depicted where necessary to depict changes in slope.’
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