The Equal Earth map projection is an equal-area pseudocylindrical projection for world maps, invented by Bojan Šavrič, Bernhard Jenny, and Tom Patterson in 2018. It is inspired by the widely used Robinson projection, but unlike the Robinson projection, retains the relative size of areas. The projection equations are simple to implement and fast to evaluate.[1]
The features of the Equal Earth projection include:[2][3]
The curved sides of the projection suggest the spherical form of Earth.
Straight parallels make it easy to compare how far north or south places are from the equator.
Meridians are evenly spaced along any line of latitude.
Software for implementing the projection is easy to write and executes efficiently.
According to the creators, the projection was created in response to the decision of the Boston public schools to adopt the Gall-Peters projection for world maps in March 2017, to accurately show the relative sizes of equatorial and non-equatorial regions. The decision generated controversy in the world of cartography due to this projection’s extreme distortion in the polar regions. At that time Šavrič, Jenny, and Patterson sought alternative map projections of equal areas for world maps, but could not find any that met their aesthetic criteria. Therefore, they created a new projection that had more visual appeal compared to existing projections of equal areas.[3][4][5][6]
As with the Natural Earth projection (2012) by Tom Patterson, a visual method was used to choose the parameters of the projection. A combination of Putniņš P4ʹ and Eckert IV projections was used as the basis.[1]
^ abŠavrič, Bojan; Patterson, Tom; Jenny, Bernhard (2018-08-07). "The Equal Earth map projection". International Journal of Geographical Information Science. 33 (3): 454–465. doi:10.1080/13658816.2018.1504949.
The EqualEarth map projection is an equal-area pseudocylindrical projection for world maps, invented by Bojan Šavrič, Bernhard Jenny, and Tom Patterson...
Collignon Cylindrical equal-area Eckert II, IV and VI EqualEarth Gall orthographic (also known as Gall–Peters, or Peters, projection) Goode's homolosine...
Natural Earthprojection is a pseudocylindrical map projection designed by Tom Patterson and introduced in 2008. It is neither conformal nor equal-area,...
AuthaGraph is an approximately equal-area world map projection invented by Japanese architect Hajime Narukawa in 1999. The map is made by equally dividing...
Goode homolosine projection (or interrupted Goode homolosine projection) is a pseudocylindrical, equal-area, composite map projection used for world maps...
The Mercator projection (/mərˈkeɪtər/) is a conformal cylindrical map projection presented by Flemish geographer and cartographer Gerardus Mercator in...
Lambert azimuthal equal-area projection List of map projections Modern flat Earth beliefs SNYDER, John P. (1997). Flattening the earth: two thousand years...
intervals of parallels). The projection is neither equal area nor conformal. Because of the distortions introduced by this projection, it has little use in navigation...
surface. 360 video projection List of national coordinate reference systems Snake Projection Snyder, John P. (1993). Flattening the Earth: Two Thousand Years...
regular icosahedron as the base for the projection. The version most commonly referred to today, it depicts Earth's continents as "one island", or nearly...
the Earth's surface). In this context the stereographic projection is often referred to as the equal-angle lower-hemisphere projection. The equal-area...
convex hull, and two Waterman projections from the W5 convex hull. To project the sphere to the polyhedron, the Earth is divided into eight octants....
The Winkel tripel projection (Winkel III), a modified azimuthal map projection of the world, is one of three projections proposed by German cartographer...
In cartography, a conformal map projection is one in which every angle between two curves that cross each other on Earth (a sphere or an ellipsoid) is preserved...
The central cylindrical projection is a perspective cylindrical map projection. It corresponds to projecting the Earth's surface onto a cylinder tangent...
The Albers equal-area conic projection, or Albers projection (named after Heinrich C. Albers), is a conic, equal area map projection that uses two standard...
distortion of land masses as they near the poles". The Robinson projection is neither equal-area nor conformal, abandoning both for a compromise. The creator...
The Mollweide projection is an equal-area, pseudocylindrical map projection generally used for maps of the world or celestial sphere. It is also known...
The Werner projection is a pseudoconic equal-area map projection sometimes called the Stab-Werner or Stabius-Werner projection. Like other heart-shaped...
projection is an equal-area map projection described by Ernst Hammer in 1892. Using the same 2:1 elliptical outer shape as the Mollweide projection,...
the use of the Lambert azimuthal equal-area projection in the same manner as Aitoff, producing the Hammer projection. While Hammer was careful to cite...
The Bonne projection is a pseudoconical equal-area map projection, sometimes called a dépôt de la guerre,: 104 modified Flamsteed,: 104 or a Sylvanus...
The Gall stereographic projection, presented by James Gall in 1855, is a cylindrical projection. It is neither equal-area nor conformal but instead tries...