Directory of Map Projections

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heart

Parameters: Standard parallel, Meridian duplication factor x >> 0

Description

Heart is a modification of the Bonne projection.

Classifications

pseudoconic
equal-area

Graticule

Meridians: Complex curves.
Parallels: Complex curves.
Poles: Points.
Symmetry: Symmetric east-west.

Limiting forms

Werner, when Standard parallel = 90° and meridional duplication factor = 1.

Parameters

Standard parallel: An arbitrary latitude that controls how much upward curvature the parallels have.
Meridional duplication factor: An arbitrary parameter that controls the spread of the meridians.

Origin

Developed by Daniel “daan” Strebe (1962–) in 1992.

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