GIS Dictionary

[data models] Acronym for digital surface model. The representation of continuous elevation values over a topographic surface, including vegetation and […]

[programming] Acronym for document type definition. A set of rules that define the allowed structure and properties of XML documents.

[data models] Acronym for digital terrain elevation data. A format for elevation data, usually tiled in 1-degree cells, produced by

[ESRI software] Labels with identical content. Maplex for ArcGIS provides the option of labeling only a single feature out of

[ESRI software] A feature class consisting of points associated with address elements in an address data table that change based

[Internet] An extension to HTML that allows Web designers to make elements on a Web page interactive, rather than changeable

[data analysis] The process of computing the map locations of linearly referenced data (for example, attributes stored in a table)

[programming] A COM technique an application uses to access an object. In early binding, an object’s properties and methods are

1 [coordinate systems] The distance east of the origin that a point in a Cartesian coordinate system lies, measured in

[Euclidean geometry] A measure of how much an ellipse deviates from a circle, expressed as the ratio of the distance

1 [astronomy] The great circle formed by the intersection of the plane of the earth’s orbit around the sun (or