Mollweide Projection

 

Mollweide Projection

sc_projections_mollweide.png

 

A pseudocylindrical, equal area projection. Also known as Homolographic projection, Homalographic projection, Babinet projection, and Elliptical projection.

 

The Mollweide projection is also provided in interrupted form as the Mollweide Interrupted.

 

Scale

 

True along latitudes 40°44’ North and South.

 

Scale is constant along any given latitude and the same for the latitude of opposite sign.

 

Distortion

 

Free of distortion only at latitudes 40°44’ North and South on the central meridian. Distortion is severe near outer meridians at high latitudes.

 

Usage

 

Occasional world maps, especially thematic maps. Combined with Sinusoidal projection to develop other projections such as the Goode Homolosine and the Briggs.

 

Origin

 

Presented by Carl B. Mollweide (1774 - 1825) of Germany in 1805. Also known as the Hammer-Aitoff. Mistakenly called the Aitoff projection in the early 20th century. The Briesemeister is a modified oblique Hammer.

 

Options

 

Specify the center longitude parameter to center the map projection.