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. Hence: where λ is the longitude from the central meridian of the projection, and is the latitude. Meridians are thus about 0.733 the length of the equator. Tags: Hence, known, according, inversely, proposed, modified, result, multiplied, scaled, scale, Meridians, Osborn, 1897–1979, central, cylindrical, Maitland, projected, Miller, applications, length, Cylindrical 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. Hence: where λ is the longitude from the central meridian of the projection, and is the latitude. Meridians are thus about 0.733 the length of the equator. Graphical projection: Overview The projection is achieved by the use of imaginary 'projectors'. The projected, mental image becomes the technician’s vision of the desired, finished picture Parallel projection: Orthographic projection The orthographic projection is derived from the principles of descriptive geometry, and is a type of parallel projection where the projection rays are perpendicular to the projection plane Vector projection: Notation Typically, a vector projection is denoted in a bold font, and the corresponding scalar projection with normal font Background Maps can be more useful than globes in many situations: they are more compact and easier to store, they readily accommodate an enormous range of scales, they are viewed easily on computer displays, they can facilitate measuring properties Viewing distances Before deciding on a particular display technology size, it is very important to calculate at what distances it is going to be viewed from. As the display size increases so does the ideal viewing distance. Bernard J Scale (map): The terminology of scales Representation of scale Map scales may be expressed in words, as a ratio, or as a fraction Mercator projection: Properties and historical details Mercator's 1569 edition was a large planisphere measuring 202 by 124 cm, printed in eighteen separate sheets Hence, known, according, inversely, proposed, modified, result, multiplied, scaled, scale, Meridians, Osborn, 1897–1979, central, cylindrical, Maitland, projected, Miller, applications, length, Cylindrical Source.


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