GIS Dictionary

[programming] A software product used to write, compile, and debug components or applications.

[ESRI software] Represents a surface that can be drawn to, for example, a screen, bitmap, or printer. In ArcGIS, the

[graphics computing] The coordinates shown on a digitizer or display, as opposed to those of a recognized datum or coordinate

[organizational issues] Acronym for Digital Geographic Information Working Group. A group established in 1983 to develop standards for spatial data

[computing] In geoprocessing, a form consisting of a tool’s parameters.

[output] A way of quickly and inexpensively copying maps using a diazo compound, ultraviolet light, and ammonia.

In image processing, an image made by subtracting the pixel values of one image from those in another.

[GPS] A technique for increasing the accuracy of GPS measurements by comparing the readings to two receiversone roving and the

[diffusion] The spread of an innovation or technology use among a group of people or organizations.

[standards] Acronym for Digital Geographic Information Exchange Standard. A standard for spatial data transfer among nations, data producers, and data

[mathematics] Represented in discrete, quantified units rather than continuously. Computers process and store information in digital form.