Wiechel projection

The Wiechel projection is an azimuthal, equal-area map projection, and a novelty map presented by William H. Wiechel in 1879. It is also a modified azimuthal projection. Distortion of direction, shape, and distance is considerable in the edges.^[1]

In polar aspect, the Wiechel projection can be expressed as so:^[1]

${\displaystyle {\begin{aligned}x&=R\left(\sin \lambda \cos \phi -\left(1-\sin \phi \right)\cos \lambda \right),\\y&=-R\left(\cos \lambda \cos \phi +\left(1-\sin \phi \right)\sin \lambda \right).\end{aligned}}}$

See also

• Lambert azimuthal equal-area projection

References

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