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.[1] Hence:
or inversely,
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".[6]
See also
editReferences
edit- ^ Flattening the Earth: Two Thousand Years of Map Projections, John P. Snyder, 1993, pp. 179, 183, ISBN 0-226-76747-7.
- ^ "Miller Cylindrical Projection". Wolfram MathWorld. Retrieved 25 March 2015.
- ^ "Projected coordinate systems". ArcGIS Resources: ArcGIS Rest API. ESRI. Retrieved 16 June 2017.
- ^ Open-source software PROJ
- ^ Patterson, Tom; Šavrič, Bojan; Jenny, Bernhard (2015). "Introducing the Patterson Cylindrical Projection". Cartographic Perspectives (78): 77–81. doi:10.14714/CP78.1270.
- ^ Open-source software PROJ
External links
editWikimedia Commons has media related to Miller cylindrical projection.