Comment on Denominator, go Mercator

scala@lemmy.ml ⁨1⁩ ⁨day⁩ ago

• fossilesque@mander.xyz ⁨1⁩ ⁨day⁩ ago

  Mathematically impossible, but you could try an Equal Area projection.

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  • ChaoticNeutralCzech@feddit.org ⁨1⁩ ⁨day⁩ ago

    Equal area projections usually preserve straight and perpendicular meridians and parallels. That’s neutral but then there’s the political decision of what latitude gets the correct aspect ratio. And Gall-Peters is not anti-colonialist if representing Africa correctly was your goal.

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    • scala@lemmy.ml ⁨1⁩ ⁨day⁩ ago

      Essentially this. A true sized projection, it can be in any “cut” of the globe as long as all the continents are true to size.

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• Denixen@feddit.nu ⁨1⁩ ⁨day⁩ ago

  Let me know if I understand correctly. You want a true to life sized map of earth? 😳

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  • Mycatiskai@lemmy.ca ⁨1⁩ ⁨day⁩ ago

    They want a 2d map of earth but with every continent to true size at scale, rather than Mercator projection where the northern hemisphere is expanded to increase their importance over the southern hemisphere.

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    • snapoff@sh.itjust.works ⁨1⁩ ⁨day⁩ ago

      Mercator wasn’t created in order to increase importance of the northern hemisphere, but to allow for directional rhumb lines to be drawn for shipping. For its intended purpose of navigation, it does an excellent job.

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      • Mycatiskai@lemmy.ca ⁨1⁩ ⁨day⁩ ago

        It may not be the intended purpose but I certainly does change how the world is seen by everyone using it to warp the mind’s eye to how the world actually physically is.

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    • scala@lemmy.ml ⁨1⁩ ⁨day⁩ ago

      Exactl, this.

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    • Denixen@feddit.nu ⁨1⁩ ⁨day⁩ ago

      Ah that makes a lot more sense! 😅

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• selokichtli@lemmy.ml ⁨1⁩ ⁨day⁩ ago

  I don’t know what you mean by “other such variations”, but maybe you are looking for a map with something like the Mollweide projection? That’s a bit of distortion in shape but trying to keep areas real.

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  • WhiskyTangoFoxtrot@lemmy.world ⁨1⁩ ⁨day⁩ ago

    What do they call the projections that have slices taken out of them at the oceans?

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    • selokichtli@lemmy.ml ⁨1⁩ ⁨day⁩ ago

      The projection is the mathematical transformation from the curved surface of the Earth to a mathematical surface. You can have types of projections based on the mathematical surface (conical, cylindrical…), or based on the features they want to rescue from this transformation (conformal, equal-area…), but, sorry, I’ve never heard of a classification based on these “slices”. Moreover, now that I think of it, even those projections we are familiar with have to be cut somewhere.

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      • WhiskyTangoFoxtrot@lemmy.world ⁨1⁩ ⁨day⁩ ago

        Another post in this thread had an example of one, called Goode’s Homolosine Equal-area Projection.

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  • scala@lemmy.ml ⁨1⁩ ⁨day⁩ ago

    No, because Africa is larger than Asia, and this shows Asia as massive.

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    • selokichtli@lemmy.ml ⁨1⁩ ⁨day⁩ ago

      You may want to double check that, or you probably will need an imaginary map.

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    • MajorasTerribleFate@lemmy.zip ⁨1⁩ ⁨day⁩ ago

      Africa: 30.3 million km²

      Asia: 44 million km²

      Nowhere near the difference Mercator projection maps make it out to be, but Asia definitely is larger.

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      • scala@lemmy.ml ⁨1⁩ ⁨day⁩ ago

        Russia*

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• MajorasTerribleFate@lemmy.zip ⁨1⁩ ⁨day⁩ ago

  Technically, the outer surface of a sphere is, itself, two-dimensional. It is, however, non-Euclidean and cannot be perfectly preserved in a Euclidean two-dimensional space.

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