node-d3-geo - 1.9.0-4 main

The edges of a spherical polygon are geodesics (segments of great circles),
not straight lines. Projected to the plane, geodesics are curves in all map
projections except gnomonic, and thus accurate projection requires
interpolation along each arc.
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D3 uses adaptive sampling inspired by a popular line simplification method to
balance accuracy and performance.
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Node.js is an event-based server-side JavaScript engine.