What is the full form of TIN
Available with the 3D Analyst license.
The Raster to TIN tool creates a TIN (Triangulated Irregular Network) with a surface that only deviates from the input raster by a specified Z tolerance. Raster to TIN is widely used to convert a raster derived from a digital elevation model (DEM) in USGS (U.S. Geological Survey) format to a TIN surface model.
The Raster To TIN tool first creates an introductory TIN using a sufficient number of input raster points (cell centers) to completely cover the perimeter of the raster surface. The TIN surface is then gradually improved until it adheres to the specified Z tolerance. For this purpose, additional cell centers are added in an iterative process as required.
The interpolation zone of the input raster is taken into account in the output TIN. The polygonal representation of the interpolation zone is extracted from the raster using z-values and added to the TIN as a soft clip polygon.
The number of points selected by the command depends on the specified Z tolerance and the smoothness of the input raster. If a small Z tolerance is specified or the raster surface is topographically rough and complex, more points are required to calculate the TIN.
If specified, the maximum number of points acts as a limit on the TIN size. The tool will break off and return an error if the Z tolerance is not reached by the time the number of nodes in the TIN has reached this size. This number is an approximate figure. It is possible to generate a TIN that is slightly larger than this value, but it is advisable to keep TINs below several million points. Large input grids and small Z tolerance settings can exceed this value. If size is an issue, consider processing subsets or use the Raster To Multipoint tool and then compute a terrain dataset.
The Z factor is used to convert the Z units (e.g. feet to meters). The heights of the output TIN are multiplied by this value to carry out the conversion.
The Z tolerance is specified in the Z units of the output TIN. For example, if the Z-units of the input raster are given in feet and the Z-factor 0.3048 is used to convert to meters in the output TIN, the Z-tolerance must be given in meters.Feedback on this topic?
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