Map projections in which the surface of the globe is projected onto a flat plane.

resolution in the cross-range direction

A reference line in a coordinate system

The use of computer graphics technology to produce maps. May include specialized CAD technology for digitizing and editing map features, and DBMS technology to produce thematic maps.

The process of converting maps and drawings into a digital format while reducing or eliminating operator intervention. Scanning is one form of automated conversion. Heads-up digitizing via tracing a raster image displayed on a computer screen is another form.

Determination whether a subject is allowed to have the specified types of access to a particular resource.
 

Verification that a potential partner in a conversation is capable of representing a person or organization.

[data structure] An attribute table stores non-spatial information in columns and rows about geographic data – similar to spreadsheets.

Descriptive information about features or elements of a database. For a database feature like census tract, attributes might include many demographic facts including total population, average income, and age. In statistical parlance, an attribute is a `variable,` whereas the database feature represents an `observation` of the variable.

named property of an entity

[GIS processing] Aspect is the slope direction on a terrain surface. Aspect is measured clockwise starting North as 0° to 360° North again with flat areas given a value of -1 (or 0 degrees).

Instantaneously recording an image in a single frame.
 

A user defined area (represented by a bounding box, circle or polygon). Often used as a filter in a query.