Miller cylindrical projection

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A Miller projection of the Earth.

The Miller cylindrical projection is a modified Mercator projection, proposed by Osborn Maitland Miller (1897–1979) in 1942. The latitude is scaled by a factor of 4/5, projected according to Mercator, and then the result is multiplied by 5/4 to retain scale along the equator.[1] Hence:

x = \lambda\,
y = \frac 5 4 \ln\left[\tan\left(\frac 1 4 \pi + \frac 2 5 \varphi\right)\right]

where λ is the longitude from the central meridian of the projection, and \varphi\, is the latitude. Meridians are thus about 0.733 the length of the equator.

In GIS applications, this projection is known as: "EPSG:54003 - World Miller Cylindrical"

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References[edit]

  1. ^ Flattening the Earth: Two Thousand Years of Map Projections, John P. Snyder, 1993, pp. 179, 183, ISBN 0-226-76747-7.

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