The Polar Projections used at Equal Area Maps
This section provides some information about the various polar projections use. Pages about the following projections are available:
Projections with fully implemented maps
Azimuthal Equidistant - preserves distances
Lambert Azimuthal Equal Area - preserves areas
Gnomonic - all great circles become straight lines
Stereographic - conformal, equal angle
Universal Polar Stereographic (UPS) - a specific Stereographic Projection for use with UTM (Universal Transverse Mercator) system
Orthographic - infinite perspective projection
Projections with interactive basemaps but no overlay capability
Due to limited projection support in the Proj4JS library (and hence OpenLayers), the following polar map can be viewed, zoomed, panned, etc but the overlay capability has been disabled: