libpysal.cg.linear2arcdist¶
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libpysal.cg.
linear2arcdist
(linear_dist, radius=6371.0)[source]¶ Convert a linear distance in the unit sphere (R3) to an arc distance based on supplied radius
Examples
>>> pt0 = (0,0) >>> pt1 = (180,0) >>> d = arcdist(pt0,pt1,RADIUS_EARTH_MILES) >>> d == linear2arcdist(2.0, radius = RADIUS_EARTH_MILES) True