LANs are composed of cabling and special data communications hardware and software. Landsat A series of satellites that produce images of the earth. A spherical reference system used to measure locations on the Earth's surface. Latitude and longitude are angles measured from the Earth's center to locations on the Earth's surface. Latitude measures angles in a north-south direction.
Longitude measures angles in the east-west direction.
A surface representation that uses a rectangular array of mesh points spaced at a constant sampling interval in the x and y directions relative to a common origin. A lattice is stored as a grid, but represents the value of the surface only at the mesh points rather than the value of the entire cell . Conceptually, layers in a database or map library environment are exactly like coverages. See also ArcStorm database and map library . The path, among possibly many, between two points which has the lowest traversal cost, where cost is a function of time, distance, or other user-defined factors.