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At the outer most zoom level, 0, the entire world can be rendered in a single map tile. Each zoom level doubles in both dimensions, so a single tile is replaced by 4 tiles when zooming in. This means that about 22 zoom levels are sufficient for most practical purposes. The Web Mercator projection is used, with latitude limits of around 85 degrees.
In 1569, Mercator announced a new projection by publishing a large world map measuring 202 by 124 cm (80 by 49 in) and printed in eighteen separate sheets. Mercator titled the map Nova et Aucta Orbis Terrae Descriptio ad Usum Navigantium Emendata: "A new and augmented description of Earth corrected for the use of sailors". This title, along ...
Image:BlankMap-World.png – World map, Robinson projection centered on the meridian circa 11°15' to east from the Greenwich Prime Meridian. Microstates and island nations are generally represented by single or few pixels approximate to the capital; all territories indicated in the UN listing of territories and regions are exhibited.
Formulas for the Web Mercator are fundamentally the same as for the standard spherical Mercator, but before applying zoom, the "world coordinates" are adjusted such that the upper left corner is (0, 0) and the lower right corner is ( , ): [7] = ⌊ (+) ⌋ = ⌊ ( [ (+)]) ⌋ where is the longitude in radians and is geodetic latitude in radians.
A world map is a map of most or all of the surface of Earth. World maps, because of their scale, must deal with the problem of projection. Maps rendered in two dimensions by necessity distort the display of the three-dimensional surface of the Earth. While this is true of any map, these distortions reach extremes in a world map.
As an atlas software, the 3D World Atlas has many features. These include, but are not limited to, world maps on a 3D globe, thousands of tables and charts, national flags, and a world clock. [2] The software also includes distance measuring and in-depth information on every country, including independence days, government types, and such. [2]
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Maps have been one of the most important human inventions for millennia, allowing humans to explain and navigate their way through the world. The earliest surviving maps include cave paintings and etchings on tusk and stone. Later came extensive maps produced in ancient Babylon, Greece and Rome, China, and India. In their simplest forms, maps ...