Mean diameters of veins and arteries measured by four ophthalmologists at the intersections between the vessels and three concentric circumferences. The first circumference (with radius R) approximates the optic disk. The second and third circumferences are concentric with the first one and have radii 2R and 3R respectively.
Given a sample x1,...,x_n, it is evaluated the distribution of the Hausdorff distances between xi + B(m,r) and xj + B(m,r) where: xi and xj are two different points from the sample; m is the sample mean of the xi's; r is a positive value and B(m,r) is the disc centered at m with radius r. The i-th point xi has probability prob[i].
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