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1

I've made an attempt at this using Leaflet, Mapbox.js and the Arc.js plugin: http://snorf.net/wkt_gc/ Currently this works with LINESTRING and POLYGON strings. Just enter the WKT in the input box to the top right and it will update.


2

This is a part of the "median line" problem of maritime boundaries. I consider the solution of this problem using the azimuthal equidistant projection in Section 14 of Geodesics on an ellipsoid of revolution. Implementation of the general azimuthal equidistant projection is given by GeographicLib (for C++ and MATLAB). There are implementations of basic ...


2

Using a spherical model of the earth may give adequate accuracy and leads to simple fast calculations. Convert all coordinates into earth-centered (3D) cartesian coordinates. For example, the formula (cos(lon)*cos(lat), sin(lon)*cos(lat), sin(lat)) will do. (It uses a distance measure in which the earth's radius is one unit, which is convenient.) ...



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