Albers projection
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Albers projection
(′äl·bərz prə′jek·shən)
(mapping) An equal-area projection of the conical type, on which the meridians are straight lines that meet in a common point beyond the limits of the map, and the parallels are concentric circles whose center is at the point of intersection of the meridians.
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Albers projection
An Albers projection shows areas accurately, but distorts shapes.
The Albers equal-area conic projection, or Albers projection (named after Heinrich C. Albers), is a conic, equal area map projection that uses two standard parallels. Although scale and shape are not preserved, distortion is minimal between the standard parallels.
The Albers projection is the standard projection for British Columbia.[1] It is also used by the United States Geological Survey and the United States Census Bureau.[2]
Snyder[3] (Section 14) describes generating formulæ for the projection, as well as the projection's characteristics. Formulæ also appear at Mathworld's page on the Albers projection.
References
- ^ "British Columbia Map Projection Standard". BC Integrated Land Management Bureau. http://www.ilmb.gov.bc.ca/risc/pubs/other/mappro/map.htm. Retrieved 2010-08-05.
- ^ "Projection Reference". Bill Rankin. http://www.radicalcartography.net/?projectionref. Retrieved 2009-03-31.
- ^ Snyder, John P. (1987). Map Projections – A Working Manual. U.S. Geological Survey Professional Paper 1395. United States Government Printing Office, Washington, D.C..This paper can be downloaded from USGS pages.
External links
- Mathworld's page on the Albers projection
- Table of examples and properties of all common projections, from radicalcartography.net
- Yukon Albers Projection
- An interactive Java Applet to study the metric deformations of the Albers Projection.
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