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The Adams hemisphere-in-a-square is a conformal
The Adams hemisphere-in-a-square is a conformal 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 longit ...
for a hemisphere. It is a transverse version of the Peirce quincuncial projection
The Peirce quincuncial projection is the conformal map projection from the sphere to an unfolded square dihedron, developed by Charles Sanders Peirce in 1879. Each octant projects onto an isosceles right triangle, and these are arranged into a ...
, and is named after American cartographer Oscar Sherman Adams, who published it in 1925.. When it is used to represent the entire sphere it is known as the Adams doubly periodic projection. Like many conformal projections, conformality fails at certain points, in this case at the four corners.
See also
* List of map projections *Guyou hemisphere-in-a-square projection
The Guyou hemisphere-in-a-square projection is a conformal map projection for the hemisphere. It is an oblique aspect of the Peirce quincuncial projection.
History
The projection was developed by of France in 1887.
Formal description
The pro ...
* Doubly periodic function In mathematics, a doubly periodic function is a function defined on the complex plane and having two "periods", which are complex numbers ''u'' and ''v'' that are linearly independent as vectors over the field of real numbers. That ''u'' and '' ...
References
Map projections Conformal projections {{geometry-stub