Snyder equal-area projection

Snyder equal-area projection is a polyhedral map projection used in the ISEA (Icosahedral Snyder Equal Area) discrete global grids. It is named for John P. Snyder, who developed the projection in the 1990s.[1]

It is a modified Lambert azimuthal equal-area projection, most often applied to a polyhedral globe consisting of an icosahedron.[2][3]

With the dual tiling system is possible to transform the big triangular faces (gray) into small centered-hexagons (red), and vice versa.
  1. ^ Snyder, J.P. (1992). "An Equal-Area Map Projection for Polyhedral Globes". Cartographica. 29 (1): 10–21. doi:10.3138/27H7-8K88-4882-1752. (subscription required)
  2. ^ "Icosahedral Snyder Equal Area". PROJ. Proj Contributors. 2004-04-04 [n.d.] Retrieved 2024-04-09.
  3. ^ Carr, D.; Kahn, R.; Sahr, K.; Olsen, T. (1997). "ISEA Discrete Global Grids". Statistical Computing and Statistical Graphics Newsletter. 8 (2/3): 31–39. Retrieved 2024-04-09.