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.