Miller cylindrical projection

The Miller cylindrical projection is a modified Mercator projection, proposed by Osborn Maitland Miller 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.

tan ⁡

tan

where λ is the longitude from the central meridian of the projection, and φ is the latitude.

[2] Meridians are thus about 0.733 the length of the equator.

In GIS applications, this projection is known as: "ESRI:54003"[3] and "+proj=mill".

[4] Compact Miller projection is similar to Miller but spacing between parallels stops growing after 55 degrees.

[5] In GIS applications, this projection is known as: "ESRI:54080" and "+proj=comill".

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