Quartic Authalic |
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Release 9.2
Last modified August 3, 2007 |
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This pseudo cylindrical equal-area projection is primarily used for thematic maps of the world.
Pseudo cylindrical equal-area projection.
Many lines; all parallels of latitude in the projection.
The central meridian is a straight line 0.45 times the length of the equator. Meridians are equally spaced curves. Parallels are unequally spaced, straight parallel lines perpendicular to the central meridian. Their spacing decreases gradually as they move away from the equator.
Useful only as a world map.
Thematic world maps. The McBryde–Thomas Flat-Polar Quartic projection is based on this projection.
Learn more about the McBryde-Thomas Flat-Polar Quartic projection