FINDCLOSESTPOINT Find index of closest point in an array.

   INDEX = findClosestPoint(POINT, POINTARRAY)

   [INDEX, MINDIST] = findClosestPoint(POINT, POINTARRAY)
   Also returns the distance between POINT and closest point in
   POINTARRAY.

   Example
     pts = rand(10, 2);
     findClosestPoint(pts(4, :), pts)
     ans =
         4

   See also
    points2d, minDistancePoints, distancePoints

Package: matgeom