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6.2.1 Lambert Azimuthal Equal-Area (-Ja -JA)
This projection was developed by Lambert in 1772 and is
typically used for mapping large regions like continents
and hemispheres. It is an azimuthal, equal-area projection,
but is not perspective. Distortion is zero at the center
of the projection, and increases radially away from this
point. To define this projection in GMT you must provide
the following information:
- Longitude and latitude of the projection center
- Scale as 1:xxxxx or as radius/latitude where radius
is distance on map in inches from projection center to an oblique
latitude (-Ja), or map width in inches (-JA).
Two different types of maps can be made with this projection
depending on how the region is specified. We will give
examples of both types.
Subsections
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Up: 6.2 Azimuthal Projections
Previous: 6.2 Azimuthal Projections
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Paul Wessel
2004-10-01