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A Mercator map can therefore never fully show the polar areas (but see Uses below for applications of the oblique and transverse Mercator projections). The Mercator projection is often compared to and confused with the central cylindrical projection , which is the result of projecting points from the sphere onto a tangent cylinder along ...
Space-oblique Mercator projection is a map projection devised in the 1970s for preparing maps from Earth-survey satellite data. It is a generalization of the oblique Mercator projection that incorporates the time evolution of a given satellite ground track to optimize its representation on the map. The oblique Mercator projection, on the other ...
With no distortion along the central meridian and the equator, distances along those lines are correct, as are the angles of intersection of other lines with those two lines. Distortion is lowest throughout the region of the map close to those lines. A sinusoidal projection shows relative sizes accurately, but distorts shapes and directions.
World map made by Rumold Mercator in 1587, using two equatorial aspects of the stereographic projection. The stereographic projection was likely known in its polar aspect to the ancient Egyptians , though its invention is often credited to Hipparchus , who was the first Greek to use it.
oblique Mercator projection. The oblique Mercator map projection is an adaptation of the standard Mercator projection. The oblique version is sometimes used in national mapping systems. When paired with a suitable geodetic datum, the oblique Mercator delivers high accuracy in zones less than a few degrees in arbitrary directional extent.
A Cornucopia of Map Projections, a visualization of distortion on a vast array of map projections in a single image. G.Projector, free software can render many projections (NASA GISS). Color images of map projections and distortion (Mapthematics.com). Geometric aspects of mapping: map projection (KartoWeb.itc.nl).
All map projections are interrupted at at least one point. Typical world maps are interrupted along an entire meridian. In that typical case, the interruption forms an east/west boundary, even though the globe has no boundaries. [1] Most map projections can be interrupted beyond what is required by the projection mathematics.
Bibliography of map projections. USGS Bulletin No. 1856. 1988. Map Projections: A Working Manual USGS Professional Paper 1395. 1987. Map projections used for large-scale quadrangles by the U.S. Geological Survey. USGS Circular No. 982. 1986. Space Oblique Mercator projection mathematical development. USGS Bulletin No. 1518. 1981. Snyder, John P ...