This equal-area projection is primarily used for world maps.
A pseudo cylindrical equal-area projection in which all parallels are straight lines and all meridians, except the straight central meridian, are equally spaced, fourth-order (quartic) curves.
All parallels are unequally spaced straight lines that are closer together at the poles. The poles are straight lines one-third as long as the equator. The central meridian is a straight line 0.45 times as long as the equator.
Shapes are stretched north–south along the equator, relative to the east–west dimension. This stretching decreases to zero at 33°45' N and S at the central meridian. Nearer the poles, features are compressed in the north–south direction.
Distorted except at the intersection of 33°45' N and S and the central meridian.
Scale is distorted everywhere except along 33°45' N and S.
Useful only as a world map.
Uses and applications
Thematic maps of the world.
- False Easting
- False Northing
- Central Meridian
- Longitude of projection's center