Triangulated Irregular Network |
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Triangulated irregular network
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Triangulated Irregular Network (TIN) A representation of a surface derived from irregularly spaced sample points and breakline features. The TIN data set includes topological relationships between points and their proximal triangles.
triangulated irregular network
A vector data structure that partitions geographic space into contiguous, nonoverlapping triangles. The vertices of each triangle are sample data points with x-, y-, and z-values.
TIN: Triangulated Irregular Network
TM: 1) Thematic Mapper, 2) Transverse Mercator
TVP: Topological Vector Profile ...
TRIANGULATED IRREGULAR NETWORK (TIN) - THIS METHOD, IS NOT, AN INTERPOLATED REGULAR GRIDDED SURFACE, BUT RATHER A METHOD OF GENERATING A SURFACE FROM A SERIES OF X,Y, ...
TIN (Triangulated irregular network) - A vector-based data structure for storing terrain information in digital terrain modeling. In a TIN data model, each sample point has an x,y coordinate and a height or z value.
TIN : Triangulated Irregular Network. A series of triangles constructed using elevation data points taken from coverages. These triangles are used for surface representation and display.
a 'triangulated irregular network' (TIN) of points.
Digital Exchange Format (DXF)
ASCII text files defined by Autodesk, Inc. Originally used in CAD, now showing up in a third party GIS software.
Digital elevation models (DEM), triangulated irregular networks (TIN), Edge finding algorithms, Theissen Polygons, Fourier analysis, Weighted moving averages, Inverse Distance Weighted, Moving averages, Kriging, Spline, ...
Triangulated Irregular Network (TIN) is a list of points with their coordinates that are stored into a file that also contains information about the topology.
Terrain is commonly modelled either using vector (Triangulated Irregular Network or TIN) or gridded (Raster image) mathematical models. In the most applications in environmental sciences, land surface is represented and modelled using gridded models.
THe template terrain modeling resources (and therefore each new scenario you make from it) contains a model for making a triangulated irregular network, TIN terrain surface from the basic components you explored in the previous section.
[data structures] Acronym for triangulated irregular network. A vector data structure that partitions geographic space into contiguous, nonoverlapping triangles. The vertices of each triangle are sample data points with x-, y-, and z-values.
Import geometric data from an existing digital terrain model (DTM) within ArcInfo, in the form of triangulated irregular networks (TINs).
- tessellation: regular (bitmaps, grids, RLE, Morton ordering, hierarchical tree structures), irregular (Triangulated Irregular Network)
- vector: unstructured (spaghetti, primitive instancing, entity-by-entity), topological (TIGER, DIME) ...
These can be used to generate contour lines and Triangulated Irregular Networks (TINs) which look like wire frame representations of the terrain. They are also used in the process of orthogonalizing air photos.
You can create these surfaces as regularly spaced grids or as triangulated irregular networks (TINs). These surface data types are appropriate for some specific data analysis and can be created in a number of ways including ...
A DEM constructed from such data may be interpolated to form a regular matrix, or the surface may be represented by linking the measured points within a Triangulated Irregular Network (TIN).
The two best sources of surface model data are the grid and the Triangulated Irregular Network (TIN). The grid data model is covered in more detail in previous sections (Spatial Data Model; Raster Analysis I; Raster Analysis II).
Fully developed data models describe data types, integrity rules for the data types, and operations on the data types. Some data models are triangulated irregular networks, images, and georelational or relational models for tabular data.
49 Triangulated Irregular Network: a system of terrain representation that builds triangular facets to connect point heights. The points and triangles are chosen to represent a surface within some limits. TM p.
 See also: Network, GIS, Model, Surface, Information
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