A map projection is any method of representing the surface of a sphere or other three-dimensional body on a plane. Map projections are necessary for creating maps. All map projections distort the surface in some fashion. Depending on the purpose of the map, some distortions are acceptable and others are not; therefore different map projections exist in order to preserve some properties of the sphere-like body at the expense of other properties. There is no limit to the number of possible map projections.
Read more about Map Projection: Background, Metric Properties of Maps, Construction of A Map Projection, Choosing A Projection Surface, Aspects of The Projection, Scale, Choosing A Model For The Shape of The Earth, Classification, Projections By Surface
Other articles related to "map projection, map projections, projections, projection, maps":
... Lambert was the first mathematician to address the general properties of map projections ... In 1772 Lambert published seven new map projections under the title Anmerkungen und Zusätze zur Entwerfung der Land- und Himmelscharten, (translated as ... Lambert did not give names to any of his projections but they are now known as Lambert conformal conic Transverse Mercator Lambert azimuthal equal area Lagrange projection Lambert cylindrical equal area ...
... Google Maps is based on a close variant of the Mercator projection ... If the Earth were perfectly spherical, the projection would be the same as the Mercator ... Google Maps uses the formulæ for the spherical Mercator, but the coordinates of features on Google Maps are the GPS coordinates based on the WGS 84 datum ...
... Compromise projections give up the idea of perfectly preserving metric properties, seeking instead to strike a balance between distortions, or to simply make things "look right" ... Most of these types of projections distort shape in the polar regions more than at the equator ... These are some compromise projections Robinson van der Grinten Miller cylindrical Winkel Tripel Buckminster Fuller's Dymaxion B.J.S ...
Famous quotes containing the words projection and/or map:
“Those who speak of our culture as dead or dying have a quarrel with life, and I think they cannot understand its terms, but must endlessly repeat the projection of their own desires.”
—Muriel Rukeyser (19131980)
“Unless, governor, teacher inspector, visitor,
This map becomes their window and these windows
That open on their lives like crouching tombs
Break, O break open,”
—Stephen Spender (19091995)