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- Chamberlin_trimetric_projection abstract "The Chamberlin trimetric projection is a map projection where three points are fixed on the globe and the points on the sphere are mapped onto a plane by triangulation. It was developed in 1946 by Wellman Chamberlin for the National Geographic Society.Chamberlin was chief cartographer for the Society from 1964 to 1971.The projection's principal feature is that it compromises between distortions of area, direction, and distance. A Chamberlin trimetric map therefore gives an excellent overall sense of the region being mapped.Many National Geographic Society maps of single continents use this projection.As originally implemented, the projection algorithm begins with the selection of three points near the outer boundary of the area to be mapped. From these three base points, the true distances to a point on the mapping area are calculated. The distances from each of the three base points are then drawn on the plane by compass circles. Unlike triangulation on a plane where three such compass circles will intersect at a unique point, the compass circles from a sphere do not intersect precisely at a point. A small triangle is generated from the intersections, and the center of this triangle is calculated as the mapped point.A Chamberlin trimetric projection map was originally obtained by graphically mapping points at regular intervals of latitude and longitude, with shorelines and other features then mapped by interpolation. Based on the principles of the projection, precise, but lengthy, mathematical formulas were later developed for calculating this projection by computer for a spherical earth.The Chamberlin trimetric projection is neither conformal nor equal-area. Rather, the projection was conceived to minimize distortion of distances everywhere with the side-effect of balancing between areal equivalence and conformality. This projection is not appropriate for mapping the entire sphere because the outer boundary would loop and overlap itself in most configurations.".
- Chamberlin_trimetric_projection thumbnail Chamberlin_trimetric_projection_SW.jpg?width=300.
- Chamberlin_trimetric_projection wikiPageExternalLink ProjectionNotes_TWiki.html.
- Chamberlin_trimetric_projection wikiPageExternalLink ngmapcollection.com.
- Chamberlin_trimetric_projection wikiPageExternalLink chamberlin.html.
- Chamberlin_trimetric_projection wikiPageID "7711317".
- Chamberlin_trimetric_projection wikiPageLength "4796".
- Chamberlin_trimetric_projection wikiPageOutDegree "22".
- Chamberlin_trimetric_projection wikiPageRevisionID "681115492".
- Chamberlin_trimetric_projection wikiPageWikiLink Algorithm.
- Chamberlin_trimetric_projection wikiPageWikiLink Cartography.
- Chamberlin_trimetric_projection wikiPageWikiLink Category:Cartography.
- Chamberlin_trimetric_projection wikiPageWikiLink Category:Map_projections.
- Chamberlin_trimetric_projection wikiPageWikiLink Colorado_State_University.
- Chamberlin_trimetric_projection wikiPageWikiLink Computer.
- Chamberlin_trimetric_projection wikiPageWikiLink Continent.
- Chamberlin_trimetric_projection wikiPageWikiLink File:Chamberlin_trimetric_projection_SW.jpg.
- Chamberlin_trimetric_projection wikiPageWikiLink Geodetic_datum.
- Chamberlin_trimetric_projection wikiPageWikiLink Globe.
- Chamberlin_trimetric_projection wikiPageWikiLink Latitude.
- Chamberlin_trimetric_projection wikiPageWikiLink Longitude.
- Chamberlin_trimetric_projection wikiPageWikiLink MATLAB.
- Chamberlin_trimetric_projection wikiPageWikiLink Map_projection.
- Chamberlin_trimetric_projection wikiPageWikiLink National_Geographic_(magazine).
- Chamberlin_trimetric_projection wikiPageWikiLink National_Geographic_Society.
- Chamberlin_trimetric_projection wikiPageWikiLink Sphere.
- Chamberlin_trimetric_projection wikiPageWikiLink Triangulation.
- Chamberlin_trimetric_projection wikiPageWikiLink Two-point_equidistant_projection.
- Chamberlin_trimetric_projection wikiPageWikiLinkText "Chamberlin trimetric projection".
- Chamberlin_trimetric_projection wikiPageWikiLinkText "Chamberlin trimetric".
- Chamberlin_trimetric_projection wikiPageUsesTemplate Template:Map_Projections.
- Chamberlin_trimetric_projection wikiPageUsesTemplate Template:Reflist.
- Chamberlin_trimetric_projection subject Category:Cartography.
- Chamberlin_trimetric_projection subject Category:Map_projections.
- Chamberlin_trimetric_projection hypernym Projection.
- Chamberlin_trimetric_projection type AnatomicalStructure.
- Chamberlin_trimetric_projection type Infographic.
- Chamberlin_trimetric_projection type Projection.
- Chamberlin_trimetric_projection type Science.
- Chamberlin_trimetric_projection type Projection.
- Chamberlin_trimetric_projection comment "The Chamberlin trimetric projection is a map projection where three points are fixed on the globe and the points on the sphere are mapped onto a plane by triangulation. It was developed in 1946 by Wellman Chamberlin for the National Geographic Society.Chamberlin was chief cartographer for the Society from 1964 to 1971.The projection's principal feature is that it compromises between distortions of area, direction, and distance.".
- Chamberlin_trimetric_projection label "Chamberlin trimetric projection".
- Chamberlin_trimetric_projection sameAs Q5069618.
- Chamberlin_trimetric_projection sameAs m.0269lzw.
- Chamberlin_trimetric_projection sameAs Q5069618.
- Chamberlin_trimetric_projection wasDerivedFrom Chamberlin_trimetric_projection?oldid=681115492.
- Chamberlin_trimetric_projection depiction Chamberlin_trimetric_projection_SW.jpg.
- Chamberlin_trimetric_projection isPrimaryTopicOf Chamberlin_trimetric_projection.