Hufnagel VII

Classifications

pseudocylindric
equal-area

Graticule

Meridians: Complex curves. Central meridian is straight and half the length of the equator.
Parallels: Straight parallel lines.
Poles: Lines half the length of the equator.
Symmetry: About the central meridian and the equator.

Scale

Correct along the 38°28′N/S parallels.

Distortion

Free of distortion only at 38°28′N/S on the central meridian.

Similar projections

Equal Earth has a little longer pole lines.
Wagner IV has slightly narrow “shoulders”.

Origin

Presented by Herbert Hufnagel, 1989, who devised the base projection to be highly configurable while always yielding equal-area results. Hufnagel detailed many specializations of the base projection. This is one of those specializations, parameterized as follows:.
ψ[max]: 60°.
A: 1/12.
B: –1/12.
Aspect ratio: ½.

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