Last modified October 21, 2008
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Also known as Sanson–Flamsteed—As a world map, this projection maintains equal area despite conformal distortion. Alternative formats reduce the distortion along outer meridians by interrupting the continuity of the projection over the oceans and by centering the continents around their own central meridians, or vice versa.
A pseudo–cylindrical projection where all parallels and the central meridian are straight. The meridians are curves based on sine functions with the amplitudes increasing with the distance from the central meridian.
All lines of latitude and the central meridian.
Distortion is reduced when used for a single land mass rather than the entire globe. This is especially true for regions near the equator.
Used for world maps illustrating area characteristics, especially if interrupted.
Used for continental maps of South America, Africa, and occasionally other land masses, where each has its own central meridian.
NOTE: Supported on spheres only.