Kavrayskiy VII projection

The Kavrayskiy VII is a map projection invented by V. V. Kavrayskiy in 1939 ["Flattening the Earth: Two Thousand Years of Map Projections", John P. Snyder, 1993, ISBN 0-226-76747-7.] for use as a general purpose pseudocylindrical projection. Like the Robinson projection, it is a compromise intended to produce good quality maps with low distortion overall. It scores well in that respect compared to other popular projections, such as the Winkel Tripel [" [http://www.physics.drexel.edu/~goldberg/projections/goldberg_gott.pdf Large-Scale Distortions in Map Projections] ", 2007, David M. Goldberg & J. Richard Gott III, 2007, V42 N4.] , despite straight, evenly-spaced parallels and a simple formulation. It has been used in the former Soviet Union but is almost unknown in the Western world.

The projection is defined as:

:$x\; =\; frac\{3\; lambda\}\{2pi\}\; sqrt\{frac\{pi^2\}\{3\}\; -\; phi^2\}$

:$y\; =\; phi,$

where $lambda$ is the longitude and $phi$ is the latitude.

ee also

*Cartography
*Wagner VI

References

External links

* [http://www.physics.drexel.edu/~goldberg/projections/ Curvature in Map Projections] , quantification of overall distortion in projections.