The Eckert VI projection, developed by the German cartographer Max Eckert-Greiffendorff in 1906, is a pseudocylindrical equal-area projection. Central meridian and all parallels are straight lines; other meridians are equally spaced elliptical sinusoids. The main use is in thematic world maps.
Eckert VI Projection
To convert Eckert VI coordinates, the following parameters have to be set: