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A Triangulated Irregular Network (TIN) is a surface data structure created from irregularly spaced points and their elevations. The points are connected to form triangular facets. TINs are stored as compound variables, just like coordinates, colors, and scopes.
Maptitude can create TINs and use them for surface analysis and other spatial analysis, such as creating areas of influence or creating a regular grid (DEM). The following table lists the GISDK functions that are used for creating and using TINs:
| GISDK Function | Summary |
|---|---|
| EstimateElevation() | Calculates a spot elevation using a TIN |
| CreateContourDB() | Creates a line or area geographic file of the contours derived from a TIN |
| CreateConvexHullDB() | Creates an area geographic file that encloses all of the points in a TIN |
| CreateHullDB() | Creates an area or a line DBD database based on a TIN |
| CreateTriangulation() | Creates a Triangulated Irregular Network (TIN) |
| CreateTriangulationAreaDB() | Creates an area geographic file from the facets in a TIN, with slope and aspect values |
| CreateVisibilityMap() | Creates an area geographic file from a TIN to show the area that is visible from a certain height at a viewpoint |
| CreateVoronoiDB() | Creates an area geographic file from a TIN with the areas of influence around each point in the TIN |
| GenerateDEMGrid() | Creates a grid geographic file containing a regular grid (DEM) generated from a TIN |
| TINElevations() | Gets the minimum and maximum elevations in a TIN |
| TINScope() | Gets the scope for a TIN |
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