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Map projection - Wikipedia, the free encyclopedia (2742 words) |
 | Unavoidably, all cylindrical projections have an east-west stretching away from the equator by a factor equal to the secant of the latitude, compared with the scale at the equator. |
| Pseudocylindrical projections represent the central meridian and each parallel as a straight line segment, but not the other meridians, except for the Collignon projection, which in its most common forms represents all meridians as straight lines from the poles to the equators as straight line segments. |
| Azimuthal projections have the property that directions from a central point are preserved (and hence, great circles through the central point are represented by straight lines on the map). |
| The GPROJECT Procedure : Concepts (1099 words) |
| Albers' Projection illustrates an Albers' equal-area projection of the northern hemisphere. |
| Lambert's Projection illustrates a Lambert's conformal projection of the northern hemisphere. |
| Gnomonic Projection illustrates a gnomonic projection of the northern hemisphere. |
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