Classifications
lenticular
Graticule
Meridians: Central meridian is straight and half the length of the equator. Other meridians are curves, concave toward the central meridian.
Parallels: Equator is straight. Other parallels are curves, concave toward the nearest pole.
Poles: Curved lines.
Symmetry: About the central meridian and the equator.
Scale
Scale is correct along central meridian and equator.
Distortion
Free of distortion at 30°N/S on the central meridian. Distortion is low in the central region. Angular deformation dominates the map’s distortion.
Similar projections
Wagner VII is equal-area.
Aitoff-Wagner’s meridians are equally spaced along the equator, and parallels are equally spaced along the central meridian.
This projection can be considered a specialization of the generalized Wagner.
Origin
Presented by Karlheinz Wagner in 1949.