Azimuthal (Planar) Map Projections

I. What is an azimuthal map projection?

Imagine a plane being placed against (tangent to) a globe. If a light source inside the globe projects the graticule onto the plane the result would be a planar, or azimuthal, map projection. If the imaginary light is inside the globe a Gnomonic projection results, if the light is antipodal a Sterographic, and if at infinity, an Orthographic.


Text: John P. Snyder and Philip M. Voxland. An Album of Map Projections U.S. Geological Survey Professional Paper 1453. U.S. Government Printing Office: 1989.

Graphics: Come from two sources: 1. Paul S. Anderson, these are graphics containing the graticule shorelines and 2. Shaded maps by Peter H. Dana, The Geographers Craft Project. Department of Geography, The University of Texas at Austin. /mapproj/mapproj.html

II. Perspective Projections




III. Non-perspective Projections

Azimuthal Equidistant

Lambert Azimuthal Equal-Area


IV. Modified Projections

Miller Oblated Stereographic

Berghaus Star


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Last modified 5/9/97by Karen Mulcahy