block by Fil 137b06fcdb6f3ab8cc12e39d7d95e987

Loximuthal projection & rhumb line

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The loximuthal projection is available as d3.geoLoximuthal in the extended geographic projections plugin.

Projection introduced by Karl Siemon in 1935, it was published and forgotten – then independently recreated by Waldo R. Tobler in 1966, who named it. Implemented in d3-geo-projection by @JasonDavies.

With the loximuthal projection, rhumb lines (aka loxodromes, in green) are straight lines. Formula adapted from http://www.mathpages.com/home/kmath502/kmath502.htm

Mouse over the map to change the reference parallel.

forked from mbostock‘s block: Loximuthal

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