Search results
Results From The WOW.Com Content Network
A geographic coordinate system (GCS) is a spherical or geodetic coordinate system for measuring and communicating positions directly on Earth as latitude and longitude. [1] It is the simplest, oldest and most widely used of the various spatial reference systems that are in use, and forms the basis for most others.
Some, such as al-Khwarizmi, further developed these works, including creating maps on a graticule of latitude and longitude. During the European Middle Ages , graticules disappeared from the few maps that were produced; T and O maps in particular were more concerned with religious cosmology than accurate representation of location.
The first level of GEOREF divides the world into quadrangles each measuring 15 degrees of longitude by 15 degrees of latitude; this results in 24 zones of longitude and 12 bands of latitude. A longitude zone is identified by a letter from A to Z (omitting I and O) starting at 180 degrees and progressing eastward through the full 360 degrees of ...
The Universal Transverse Mercator (UTM) is a map projection system for assigning coordinates to locations on the surface of the Earth.Like the traditional method of latitude and longitude, it is a horizontal position representation, which means it ignores altitude and treats the earth surface as a perfect ellipsoid.
The lines from pole to pole are lines of constant longitude, or meridians. The circles parallel to the Equator are circles of constant latitude, or parallels. The graticule shows the latitude and longitude of points on the surface. In this example, meridians are spaced at 6° intervals and parallels at 4° intervals.
Geodetic latitude and geocentric latitude have different definitions. Geodetic latitude is defined as the angle between the equatorial plane and the surface normal at a point on the ellipsoid, whereas geocentric latitude is defined as the angle between the equatorial plane and a radial line connecting the centre of the ellipsoid to a point on the surface (see figure).
Longitude at left edge of map, in decimal degrees; right = -79 Longitude at right edge of map, in decimal degrees; Precision. Longitude: from West to East this map definition covers 26.5 degrees. At an image width of 200 pixels, that is 0.1325 degrees per pixel. At an image width of 1000 pixels, that is 0.0265 degrees per pixel. Latitude: from ...
Longitude at right edge of map, in decimal degrees; Precision. Longitude: from West to East this map definition covers 0.0984 degrees. At an image width of 200 pixels, that is 0.0005 degrees per pixel. At an image width of 1000 pixels, that is 0.0001 degrees per pixel. Latitude: from North to South this map definition covers 0.0784 degrees.