Azimuthal equal area projection

Outline sketch of Lambert's azimuthal projection

Animation of a Lambert projection. Each grid cell retains its area throughout the transformation. In this animation, the points on the equator always stay on the plane . ${\displaystyle z=0}$

The azimuthal equal-area projection (also called Lambert's azimuthal projection , after Johann Heinrich Lambert ) is a map network design in which the entire (earth) sphere can be reproduced. Lambert announced it in 1772.

The map is neither length nor angle true. The center of the map is displayed without distortion, but the distortion increases so much towards the edge that these areas become very difficult to visualize. For this reason, only a maximum of one hemispherical surface is usually shown with this figure. This is marked with a red circle line in the graphics below.

Meridians and circles of latitude are distorted into complex curves - especially recognizable in the oblique projection. This is why this map cannot be constructed with a compass and ruler.

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  Transverse azimuthal Lambert projection

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  Polar azimuthal Lambert projection

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  Oblique azimuthal Lambert projection ( water hemisphere )

Individual evidence

1. ^ Karen Mulcahy: Lambert Azimuthal Equal Area . City University of New York . Retrieved August 2, 2020.

Web links

Commons : Lambertian azimuthal equal-area projection  - collection of images, videos and audio files