Contents
Where can I find Mercator projection on the Internet?
Today, the Mercator can be found in marine charts, occasional world maps, and Web mapping services, but commercial atlases have largely abandoned it, and wall maps of the world can be found in many alternative projections.
When to use Mercator map projection instead of ellipsoidal?
Global projected coordinates in meters for entire planet. Used for raster tile generation in GIS and WM (T)S services. HINT: Simpler spherical calculation are used instead of ellipsoidal. Mercator map projection deforms size (Greenland vs Africa) and never shows poles. Zoom-specific pixel coordinates for each level of the pyramid.
When did Erhard Etzlaub make the Mercator projection?
German polymath Erhard Etzlaub engraved miniature “compass maps” (about 10×8 cm) of Europe and parts of Africa that spanned latitudes 0°–67° to allow adjustment of his portable pocket-size sundials. The projection found on these maps, dating to 1511, was stated by Snyder in 1987 to be the same projection as Mercator’s.
When did the Chinese use the Mercator projection?
Joseph Needham, a historian of China, wrote that the Chinese developed the Mercator projection hundreds of years before Mercator did, using it in star charts during the Song Dynasty. However, this was a simple, and common, case of misidentification. The projection in use was the equirectangular projection .
However, the advent of Web mapping gave the projection an abrupt resurgence in the form of the Web Mercator projection . Today, the Mercator can be found in marine charts, occasional world maps, and Web mapping services, but commercial atlases have largely abandoned it, and wall maps of the world can be found in many alternative projections.
What is the oblique Mercator projection used for?
The Oblique Mercator projection is a cylindrical projection often used to portray areas along great circles. This map projection is typically used for areas that are long, thin zones (like coastal areas) at a diagonal with respect to the north.
How is the Transverse Mercator used on a map?
The Universal Transverse Mercator (UTM) projection is used to define horizontal positions worldwide by dividing the earth’s surface into 6-degree zones, each mapped by the Transverse Mercator projection with a central meridian in the center of the zone. Transverse Mercator
Why is the plate Carree a simple projection?
Also known as equirectangular, equidistant cylindrical, simple cylindrical, or rectangular, this projection is very simple to construct because it forms a grid of equal rectangles. Because of its simple calculations, its usage was more common in the past.