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TIFF
Acronym for Tagged Information File Format.

TIGER
Acronym for Topologically Integrated Geographic Encoding and Referencing database standard developed by the U.S. Bureau of the Census to support the 1990 census.
1) Supersedes the original DIME file standard that had been applied to only portions of the United States.
2) Introduces political boundaries, feature names, and ZIP Code boundaries.
3) Structured for easy implementation of standard address matching algorithms.

TIN
Acronym for Triangulate Irregular Network, a representation of a plane surface as a grid of triangular polygons. These models can be built into hierarchical structures, and have a range of algorithms available for their formulation and translation to contour maps and surface grids.


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