A two-dimensional, planar coordinate system in which x measures horizontal distance and y measures vertical distance. Each point on the plane is defined by an x,y coordinate. Relative measures of distance, area, and direction are constant throughout the Cartesian coordinate plane.
Coordinates represent locations on the earth's surface relative to other locations.
Associated feature attribute tables describe and store attributes of the geographic features. A term that refers to a layer of spatial data within a geographic information system. A coverage usually represents a single theme such as soils, streams, roads, or land use. In remote sensing, this term is often used to describe the extent of the earth's surface represented on an image. An arc having the same polygon on both its left and right sides and having at least one node that does not connect to any other arc.