Directory of Map Projections

What is a projection?

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small circle equal-area tetrahedron

Classifications

polyhedral
tessellating
equal-area

Graticule

Meridians: Complex curves. The axial meridians are straight.
Parallels: Complex curves.
Symmetry: Triaxially about the centroid.

Distortion

Undistorted at triangle centroids. Flower pattern around centroids.

Similar projections

Snyder tetrahedron is similar but more distorted, especially along the lines of symmetry. Great circle equal-area tetrahedron is very similar.

Origin

The methodology was presented by Dietrich van Leeuwen in 2006, generalizing John P. Synder’s 1992 work. The methodology applies to any Platonic solid.

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