Polyconic projection class

Polyconic can refer either to a class of map projections or to a specific projection known less ambiguously as the American polyconic projection. Polyconic as a class refers to those projections whose parallels are all non-concentric circular arcs, except for a straight equator, and the centers of these circles lie along a central axis. This description applies to projections in equatorial aspect.[1]

This article is about the class of projections called "polyconic". For the specific projection called "polyconic", see American polyconic projection.
American polyconic projection of the world
Van der Grinten projection of the world.

Polyconic projections

Some of the projections that fall into the polyconic class are:

A series of polyconic projections, each in a circle, was also presented by Hans Mauer in 1922,[2] who also presented an equal-area polyconic in 1935.[3]:248 Another series by Georgiy Aleksandrovich Ginzburg appeared starting in 1949.[3]:258–262

See also

References
  1. An Album of Map Projections (US Geological Survey Professional Paper 1453), John P. Snyder & Philip M. Voxland, 1989, p. 4.
  2. https://pubs.usgs.gov/pp/1453/report.pdf
  3. John P. Snyder (1993). Flattening the Earth: Two Thousand Years of Map Projections. ISBN 0-226-76747-7.


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