GIS Dictionary

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reference data

[geocoding] In geocoding, material containing the location and address information of specific features. Reference data consists of the spatial representation […]

reference data source

[ESRI software] In ArcGIS, a spatial data layer that a geocoding service uses to perform address geocoding. A reference data

reference data source

[ESRI software] In ArcGIS, a spatial data layer that a geocoding service uses to perform address geocoding. A reference data

reference datum

[geodesy] Any datum, plane, or surface from which other quantities are measured.

reference datum

[geodesy] Any datum, plane, or surface from which other quantities are measured.

reference ellipsoid

[geodesy] An ellipsoid associated with a geodetic reference system or geodetic datum.

reference map

[map design] A map designed to show where geographic features are in relation to each other.

reference point

[ESRI software] In Survey Analyst, a point with known coordinates, used as input to a computation.

reference scale

[symbology] The scale at which symbols appear on a digital page at their true size, specified in page units. As

reference system

[coordinate systems] A method for identifying positions on the globe. This is often constructed with a grid that either refers

reference theme

[ESRI software] In ArcView 3.x, a theme used to perform geocoding. A reference theme can be any point, line, or

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