Geocart Projections

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Wagner VII

Classifications

Geocart menu class: Lenticular
Modified azimuthal
Equal area

Graticule

Meridians: Central meridian is straight and half the length of the Equator. Other meridians are curves, unequally spaced along the Equator and concave toward the central meridian.
Parallels: Equator is straight. Other parallels are curves, unequally spaced along the central meridian and concave toward the nearest pole.
Poles: Curved lines
Symmetry: About the central meridian or the Equator

Scale

Decreases along the central meridian and the Equator with distance from the center of the projection

Distortion

Considerable shape distortion in polar areas

Other features

A modification of the Hammer projection; the poles correspond to the 65th parallels on the Hammer, and meridians are repositioned

Usage

World maps, such as climatic maps prepared by the U.S. Department of Commerce

Origin

Presented by Karlheinz Wagner of Germany in 1941

Other names

Hammer-Wagner

Similar projections

Hammer (Elliptical) truncated and otherwise modified for the Wagner VII

Description adapted from J.P. Snyder and P.M. Voxland, An Album of Map Projections, U.S. Geological Survey Professional Paper 1453. United States Government Printing Office: 1989.