A map projection in which areas on a sphere, and the areas of any features contained on it, are mapped to the plane in such a way
that two are related by a *constant* scaling factor. No projection can be both
equal-area and conformal, and projections
which are neither equal-area nor conformal
are sometimes called aphylactic (Snyder
1987, p. 4). Equal-area projections are also called equivalent, homolographic,
homalographic, authalic, or equiareal (Lee
1944; Snyder 1987, p. 4).

# Equal-Area Projection

## See also

Albers Equal-Area Conic Projection, Aphylactic Projection, Behrmann Cylindrical Equal-Area Projection, Conformal Projection, Cylindrical Equal-Area Projection, Equidistant Projection, Hammer-Aitoff Equal-Area Projection, Lambert Azimuthal Equal-Area Projection, Map Projection## Explore with Wolfram|Alpha

## References

Lee, L. P. "The Nomenclature and Classification of Map Projections."*Empire Survey Rev.*

**7**, 190-200, 1944.Snyder, J. P.

*Map Projections--A Working Manual.*U. S. Geological Survey Professional Paper 1395. Washington, DC: U. S. Government Printing Office, 1987.

## Referenced on Wolfram|Alpha

Equal-Area Projection## Cite this as:

Weisstein, Eric W. "Equal-Area Projection."
From *MathWorld*--A Wolfram Web Resource. https://mathworld.wolfram.com/Equal-AreaProjection.html