GIS Dictionary

[federal government] A small, statistical subdivision of a county that usually includes approximately 4,000 inhabitants but may include from 2,500 […]

[Euclidean geometry] The point in a circle or in a sphere equidistant from all other points on the object.

[data capture] A line digitized along the center of a linear geographic feature, such as a street or a river,

[data capture] The generation of vector features along the center of connected cells. It is typically used for vectorizing scanned

In aerial photography, the point at the exact center of an aerial photograph.

[coordinate systems] The line of longitude that defines the center and often the x-origin of a projected coordinate system. In

[data capture] The geometric center of a feature. For line, polygon, or three-dimensional features, it is the center of mass

[computing] Acronym for Common Gateway Interface. A standard for scripts that run external programs from a World Wide Web server.

[surveying] A unit of length equal to 66 feet, used especially in U.S. public land surveys. Ten square chains equal

[data capture] A method of drawing a polygon as a series of straight line segments defined as a set of

[remote sensing] A process that measures how the attributes of a particular area have changed between two or more time