Definitions for Map projection
map pro·jec·tion

Princeton's WordNetRate this definition:0.0 / 0 votes

1. map projectionnoun

   a projection of the globe onto a flat map using a grid of lines of latitude and longitude

WiktionaryRate this definition:1.0 / 1 vote

1. map projectionnoun

   any systematic method of transforming the spherical representation of parallels, meridians and geographic features of the Earth's surface to a nonspherical surface, usually a plane

WikipediaRate this definition:0.0 / 0 votes

1. Map projection

   In cartography, map projection is the term used to describe a broad set of transformations employed to represent the two-dimensional curved surface of a globe on a plane. In a map projection, coordinates, often expressed as latitude and longitude, of locations from the surface of the globe are transformed to coordinates on a plane. Projection is a necessary step in creating a two-dimensional map and is one of the essential elements of cartography. All projections of a sphere on a plane necessarily distort the surface in some way and to some extent. 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. The study of map projections is primarily about the characterization of their distortions. There is no limit to the number of possible map projections.: 1  More generally, projections are considered in several fields of pure mathematics, including differential geometry, projective geometry, and manifolds. However, the term "map projection" refers specifically to a cartographic projection. Despite the name's literal meaning, projection is not limited to perspective projections, such as those resulting from casting a shadow on a screen, or the rectilinear image produced by a pinhole camera on a flat film plate. Rather, any mathematical function that transforms coordinates from the curved surface distinctly and smoothly to the plane is a projection. Few projections in practical use are perspective.Most of this article assumes that the surface to be mapped is that of a sphere. The Earth and other large celestial bodies are generally better modeled as oblate spheroids, whereas small objects such as asteroids often have irregular shapes. The surfaces of planetary bodies can be mapped even if they are too irregular to be modeled well with a sphere or ellipsoid. Therefore, more generally, a map projection is any method of flattening a continuous curved surface onto a plane.The most well-known map projection is the Mercator projection.: 45  This map projection has the property of being conformal. However, it has been criticized throughout the 20th century for enlarging regions further from the equator.: 156–157  To contrast, equal-area projections such as the Sinusoidal projection and the Gall–Peters projection show the correct sizes of countries relative to each other, but distort angles. The National Geographic Society and most atlases favor map projections that compromise between area and angular distortion, such as the Robinson projection and the Winkel tripel projection.

WikidataRate this definition:5.0 / 1 vote

1. Map projection

   A map projection is a systematic transformation of the latitudes and longitudes of locations on the surface of a sphere or an ellipsoid into locations 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. More generally, the surfaces of planetary bodies can be mapped even if they are too irregular to be modeled well with a sphere or ellipsoid. Even more generally, projections are the subject of several pure mathematical fields, including differential geometry and projective geometry. However "map projection" refers specifically to a cartographic projection.

Matched Categories

1. • Projection

How to pronounce Map projection?

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How to say Map projection in sign language?

Numerology

1. Chaldean Numerology

   The numerical value of Map projection in Chaldean Numerology is: 2

2. Pythagorean Numerology

   The numerical value of Map projection in Pythagorean Numerology is: 2

References

1. ^ Princeton's WordNet
   http://wordnetweb.princeton.edu/perl/webwn?s=Map projection
2. ^ Wiktionary
   https://en.wiktionary.org/wiki/Map_Projection
3. ^ Wikipedia
   https://en.wikipedia.org/wiki/Map_Projection
4. ^ Wikidata
   https://www.wikidata.org/w/index.php?search=Map projection