The Mercator projection is a cylindrical map projection presented by the Flemish geographer and cartographer Gerardus Mercator, in 1569.
Mercator projection
Not formed by a projecting light source, Mercator's projection is a completely mathematical transformation of the earth onto a rectangular map.
Mercator projection The Mercator projection is a conformal cylindrical projection. Parallels and meridians are straight lines intersecting at right angles, a requirement for conformality. Meridians are equally spaced.
Mercator Projection: A map projection designed by Gerardus Mercator, where the earth's surface is drawn as it would appear if projected on a cylinder wrapped around the earth.
Mercator projection
A Mercator projection is a type of rectangular map in which the true compass direction are kept intact (lines of latitude and longitude intersect at right angles), but areas are distorted (for example, ...
Mercator Projection
The Basics of Classical Datums (pdf)
some sources for Map Projection Software ...
A mercator projection is a ‘pseudocylindrical' conformal projection (it preserves shape).
The Mercator projection is frequently and inappropriately employed in world maps. In the equatorial aspect the map must be arbitrarily clipped at top and bottom; the complete map has infinite height.
The Mercator projection exaggerates the distance between meridians by the same degree as the lengths of the parallels, in order to obtain an orthomorphic projection. A transverse Mercator is similar, but based on the transverse cylindrical projection.
The Mercator projection has straight meridians and parallels that intersect at right angles. Scale is true at the equator or at two standard parallels equidistant from the equator.
The Mercator Projection always has the Equator as its Standard Parallel. Its construction is such that the lines of longitude and latitude are at right angles to each other - this means that a world map is always a rectangle.
In the Mercator projection, in the Y direction, distances are stretched increasingly near the poles. This is the reason we get distorted Y measurements.
The Mercator projection is not normally used for military topographic maps; however, its description serves as a basis for understanding the transverse Mercator projection.
Reference: Mercator projection (Strahler and Strahler 1987, p. 15)
a projection is conformal if the angles in the original features are preserved ...
The Transverse Mercator projection, which lends itself to edge-matching operations, is commonly used for map series, such as the 1:50 000 and 1:250 000 scale National Topographic System (NTS), produced by Geomatics Canada.
Gall-Peters Projection Map projection system that reduces the area distortion found in Mercator projections. Gamete A haploid reproductive cell.
Nov 1997 02:34:57 -0800 To: Patrick Di Justo Patrick Di Justo wrote: > Can anyone point me to a software package (preferably freeware or > shareware) that can take a flat rectangular image map and distort it > into one of those mercator projection ...
1569 - Gerardus Mercator issues the first Mercator projection map
1620 - Francis Bacon analyzes the scientific method in his Great Instauration of Learning ...
Gerardus Mercator (1512-1594) - innovative cartographer produced the mercator projection
Alexander von Humboldt (1769-1859) - Considered Father of modern geography, published the Kosmos and founder of the sub-field biogeography.
Projection("EPSG:4326"); // WGS84 Google Mercator projection var WGS84_google_mercator = new OpenLayers.Projection("EPSG:900913"); //Initialize the map //creates a new openlayers map in the html element id map var map = new OpenLayers.
75 minute of longitude, at a scale of 1:12,000 cast on the Universal Transverse Mercator projection based on the North American Datum of 1983.
Transverse Mercator Projections and U.S. Geological Survey Digital Products, U.S. Geological Survey
Vertical Datums, Elevations, and Heights, National Imagery and Mapping Agency
Coordinate Systems Overview, Peter H.
For states extending predominantly north-south, the transverse cylindrical Mercator projection was adopted.
Transverse Mercator projections may then be applied to each zone. (UTM) The Universal Transverse Mercator is an international plane (rectangular) coordinate system developed by the U.S. Army.
A point locating coordinate system based on the Transverse Mercator projection in which the world is divided into 60 zones of 6° longitude. Each zone stretches from the latitudes of 84° north to 80° south and these are labeled 1-60.
The projection Pages of Carlos A Furuti Especially, his pages about the graphical properties of the Mercator projection
Coordinate Systems Overview
Map Projection Overview
Geodetic Datums Overview ...
The last item of the geodetic basis is the definition of a map projection, using a transverse Mercator projection. The projection is fitted to the area to obtain a scale factor as small as possible within the construction area.
Map services are now tiled in the Web Mercator Projection with 256 x 256 pixel tiles.
You can easily create mashups with web maps from Bing and Google, which share the same tiling scheme.
Portable Solution for the Field ...
Cartography or mapmaking (in Greek chartis = map and graphein = write) is the study and practice of making maps or globes. ... The Mercator projection shows courses of constant bearing as straight lines. ...
Universal Transverse Mercator (UTM) - Based on a Transverse Mercator projection centered in the middle of zones that are 6 degrees in longitude wide. These zones have been created throughout the world.
Universal Transverse Mercator (UTM) grid Military grid system based on the transverse Mercator projection, applied to maps of the Earth's surface extending from the Equator to 84 Degrees north and 80 degrees south latitudes upland Highland; ...
UTM (Universal Transverse Mercator) - A coordinate system based on the Transverse Mercator projection. The UTM grid extends North-south from 84oN to 80oS latitude. It is divided at the 180o meridian eastward into 60 6-degree zones.
Scale really does depend on which two points are used for its computation. The Mercator projection provides an extreme example.
SEE ALSO: Behrmann Cylindrical Equal-Area Projection, Cylindrical Equal-Area Projection, Cylindrical Equidistant Projection, Gall Orthographic Projection, Mercator Projection, Miller Cylindrical Projection, Peters Projection, ...
The formula for the Mercator Projection is given as an example for plotting projections. Clarke refers to John Snyder's Map Projections: A Working Manual and An Album of Map Projections for further reference.
The images are rectified to a Universal Transverse Mercator projection, and National Map Accuracy Standards must be met at the 1:12,000-scale for quarter-quadrangles, and at the 1:24,000-scale for quadrangles.
The projections of the miscellaneous additional maps, which were mostly in transverse mercator projections, were similarly inverted. Positional errors of the rectified data were estimated to be no more than 1 km.
by the natural curvature of that surface so that some projection compensation is needed - the data require reference to a coordinate system and those most commonly applied are the Universal Transverse Mercator and Space Oblique Mercator projections.
The Lambert conformal conic projection is used for states that extend mostly east-west, while transverse Mercator is used for those that extend mostly north-south. The oblique Mercator projection is used for the panhandle of Alaska.
The SPC system divides the United States into 125 zones (5 cover Texas) and employs both Lambert conformal and Transverse Mercator projections (depending upon a state`s size and shape).
 See also: Projection, Map, Surface, Geographic, Area
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