GIS Dictionary

[computing] The amount of time between the time that a client requests an object from a server and the time the client receives that object.

[ESRI software] In ArcGlobe, a navigation mode that allows navigation on a globe close to the ground, simulating walking.

[computing] Acronym for wide area network. A computer network that connects computers in a large area, such as in different cities or countries. The Internet is the most well-known example … Read more

[defense] In MOLE, a real-world battle element, such as a ground force unit or a lane boundary, represented by MOLE symbols on a map.

[defense] In MOLE, graphics on a map that represent battle elements such as ground troops and direction of troops. These graphics are used to plan and execute military operations in … Read more

[ESRI software] A text file that records all dialog during an ArcInfo session. Watch files can be edited and converted to macro programs.

[programming] A software design methodology in which development proceeds through a top-down process of overlapping stages. First proposed in 1970, the waterfall model is a highly structured approach to a … Read more

[hydrology] A basin-like terrestrial region consisting of all the land that drains water into a common terminus.

[physics] The distance between two successive crests on a wave, calculated as the velocity of the wave divided by its frequency.

[data storage] A lossy method of data compression that uses mathematical functions and is best used in image or sound compression.

1 [geography] The mental activities engaged in by a person trying to reach a destination, usually an unfamiliar one, in real or virtual space. Wayfinding consists of acquiring information that … Read more

[GPS] A location of interest, or a reference point on a route, stored as latitude-longitude coordinates and often captured by a GPS receiver.