Its actual requirements frame-work, that could be possibly geographic (in which spherical coordinates are measured from the earth's center) or plan metric (wherein the earth's coordinates are projected onto a two-dimensional planar exterior) Units of measurement (typically feet or meters for projected coordinate methods or decimal degrees for latitude-longitude)Coordinate systems allow geographic datasets to use popular locations for integration. A coordinate method is a reference program familiar with stand for the locations of geographic features, imagery, and observations, such as Global Positioning System (GPS) locations, within a common geographic framework.