GIS Dictionary

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tic

[ESRI software] A registration or geographic control point for a coverage representing a known location on the earth’s surface. Tics […]

tick marks

1 [symbology] Graphics that mark divisions of measurement on a scale bar. 2 [graphics map display] Short, regularly spaced lines

tidal datum

[geodesy] A vertical datum in which zero height is defined by a particular tidal surface, often mean sea level. Examples

tie point

[surveying] A point whose location is determined by a tie survey. [photogrammetry] A point in a digital image or aerial

tie survey

[surveying] A survey that uses a point of known location on the ground to determine the location of a second

tied candidates

[geocoding] In geocoding, two or more records that yield the same score when matching an address.

TIGER

[database structures] Acronym for Topologically Integrated Geographic Encoding and Referencing. The nationwide digital database developed for the 1990 census, succeeding

TIGER/Line files

A digital database of geographic features, covering the entire United States and its territories, that provides a topological description of

tight coupling

A high or complex degree of interconnections between the components within a program or between programs, that requires substantial overlap

tiling

[data structures] An internal subsetting of a spatial dataset (commonly raster) into a manageable rectangular set, or rows and columns

time mode

[ESRI software] One of two methods for displaying temporal data in ArcGIS Tracking Analyst: real-time mode or playback mode. Time

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