follow up for Voronoi Diagrams code by John (tenochtitlanuk)

[tsh73]

General description:
en.wikipedia.org/wiki/Voronoi_diagram
John's code:
www.diga.me.uk/Voro.html

Observation:
One could change metrics used and get different partitioning for same set of points
           'Euclidean distance
           nDistSqd =( townX( i) -( Xmin +xS /400 *dX))^2 +( townY( i) -( Ymin +yS /400 *dY))^2
           'Manhattan distance
           'nDistSqd =abs( townX( i) -( Xmin +xS /400 *dX)) + abs( townY( i) -( Ymin +yS /400 *dY))
           'Chebyshev distance
           'nDistSqd =max(abs( townX( i) -( Xmin +xS /400 *dX)) , abs( townY( i) -( Ymin +yS /400 *dY)))

Euclidean distance

Manhattan distance

Chebyshev distance