A disk around Paris
by John from John D. Cook on (#6G6K1)
The other day I saw an image of a large disk centered on Paris subjected to the Mercator projection. I was playing around in Mathematica and made similar images for different projections. Each image below is a disk of radius 4200 km centered on Paris (latitude 49, longitude 2).
All images were produced with the following Mathematica code, changing the GeoProjection argument each time.
GeoGraphics[GeoDisk[GeoPosition[{49, 2}], Quantity[4200, "Kilometers"] ], GeoProjection -> "...", GeoRange -> "World"]Robinson projection... GeoProjection -> "Robinson", ...
... GeoProjection -> "WinkelSnyder", ...
... GeoProjection -> "Orthographic", ...
... GeoProjection -> "LambertAzimuthal", ...
... GeoProjection -> "PeirceQuincuncial", ...
This last projection has some interesting mathematics and history behind it. See this post for the backstory.
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