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Cylindrical Equal Area

Release 9.2
Last modified August 3, 2007
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Lambert first described this equal area projection in 1772. It has been used infrequently.

Illustration of Cylindrical Equal Area projection

Projection method

A normal perspective projection onto a cylinder tangent at the equator.

Points of intersection

The equator.

Linear graticules

In the normal, or equatorial aspect, all meridians and parallels are perpendicular straight lines. Meridians are equally spaced and 0.32 times the length of the equator. Parallels are unequally spaced and farthest apart near the equator. Poles are lines of length equal to the equator.



Shape is true along the standard parallels of the normal aspect. Distortion is severe near the poles of the normal aspect.


There is no area distortion.


Local angles are correct along standard parallels or standard lines. Direction is distorted elsewhere.


Scale is true along the equator. Scale distortion is severe near the poles.


Recommended for narrow areas extending along the central line. Severe distortion of shape and scale near the poles.

Uses and applications

Suitable for equatorial regions.




Type 1 parameters

Type 2 parameters

Type 3 parameters

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