Compare uniform random and Fibonacci lattice point distributions on the unit sphere. Each point is coloured by its nearest-neighbour distance: blue = clustered, red = isolated (in a void). For a perfectly uniform distribution all points would be the same colour.
arccos(2u − 1) transformation · correct marginal distribution · Poisson voids
Golden angle φi = 2πi/φgr · deterministic · near-optimal coverage
Lower is better for all metrics. A perfect lattice would give ratio = 1 and CV = 0%.