Xkcd map projections. Map projections 2019-12-13

Map projections: why the same world looks different

Xkcd map projections

I liked the following resolution, calling for a ban on all rectangular coordinate maps for general use: In 1989, seven North American professional geographic organizations including the American Cartographic Association, National Council for Geographic Education, Association of American Geographers, and the National Geographic Society adopted a resolution that called for a ban on all rectangular coordinate maps. Basic types of map projection The best way to describe how a map projection works is by imagining a piece of paper the map being laid over the Earth or a globe to obtain the latitude and longitude lines for the map. Because the distances between the elevation lines would get collapsed. . In fact, he didn't create it, and it's not perfect.

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1784: Map Projection: Liquid

Xkcd map projections

Mine is the Peirce quincuncial. . . Appearance depends on reference parallel. Disadvantages: It is not a gnomonic projection, whereby global data expands from the center point of a tangent facet outward to the edges. Today is gonna be a good day! Read more about it here: This is just a sampling of the many, many possibilities.

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Mollweide v. Hammer (map projections)

Xkcd map projections

Pseudocylindrical Equal-area Karl Siemon Oscar Adams 1937 1944 Parallels are unequal in spacing and scale. The Robinson projection The was developed by as a map that was supposed to look nice and is often used for classroom maps. Polyhedral Compromise 1909 Projects the globe onto an octahedron with symmetrical components and contiguous landmasses that may be displayed in various arrangements. Where the piece of paper touches the globe there is no distortion on the map; it is an exact reflection of the globe. . Have you seen the 1909 Cahill map it's based--.

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List of map projections

Xkcd map projections

. And some cubes: chrth wrote:I don't think so. However, the range of acceptable distortion is expanded from 15° north and south to 45° north and south. In their current form, it's very hard to distinguish between your material and the material you are responding to. If you've ever taken the time to look at different maps, or maps from different eras, you've probably observed that they can be rendered very differently.

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1784: Map Projection: Liquid

Xkcd map projections

However, since lines of longitude aren't parallel, their projections come together at the poles, where the latitude lines on the Mercator never come together because latitude lines never meet. Because of this, Randall implies the Van der Grinten enthusiast to be optimistic and childishly simple-minded e. Distortion-free only where the standard parallels intersect the central meridian. In this the world is distorted to fit into a perfect square, centred on Africa. Mostly for aesthetic reasons, corners just seem like a weird idea on the map of a mostly spherical object. The Sunglasses internet meme has been used as well. You have really looked at your hands.

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Map projections

Xkcd map projections

Summary: The Dymaxion map or Fuller map is a projection of a world map onto the surface of an icosahedron, which can be unfolded and flattened to two dimensions. Pseudocylindrical Equal-area 1923 Hybrid of Sinusoidal and Mollweide projections. Summary: The van der Grinten projection is a compromise map projection that is neither equal-area nor conformal. Geological Survey Professional Paper 1395. There have been and they are beginning to achieve some degree of success in the mainstream. While a globe can represent the planet accurately, a globe large enough to display most features of the earth at a usable would be too large to be useful, so we use maps. .

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Maps Mania: XKCD Cartography

Xkcd map projections

. How do you store enough food to feed people on long airplane trips? The creator felt this produced a better overall view than could be achieved by adhering to either. This is a and may never be able to satisfy particular standards for completeness. The Mercator projection uses the equator as the, um, focus? Conic Equal-area 1805 Two standard parallels with low distortion between them. They don't understand that it was never intended to be an accurate projection of the Earth's surface.

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Map Projections : xkcd

Xkcd map projections

Funny enough I consider Mollweide to be preferable over Hammer, for general mapping purposes. On his map, lines of latitude and longitude intersect at right angles and thus the direction of travel—the rhumb line—is consistent. You like how X and Y map to latitude and longitude. Exceed that ratio, and our moderator neck beards will begin to furiously itch with anger. Coincidentally, Daan Strebe, its author, is the person that objected at wiki, and single-handed, got the waterman map removed from its pages. Also, the indicatrix for it is very simple, as is the formula, and simple things please simple minds like mine, apparently -- without taking it to an extreme like the equirectangular projection does.

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