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A method of illustrating data so it can be viewed and understood.

8 votes
3 answers
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What kinds of line segments/edges require high accuracy in a true surface-of-the-ellipsoid r...

Of the different kinds of paths (including ones I missed), which are important enough that they have an 'exact' representation, vs representing within an error bounds by short segments of a simpler path … An edit, much later, to add a citation I've come across that closely parallels my own thoughts on the use of 3D unit vectors as a geographic primitive: A Non-singular Horizontal Position Representation