We use the intensity function to visualize the plausibility of each area of some study map to belong to a possible cluster in the map. Fig. 1 presents the most likely cluster found by circular scan. Fig. 2 shows the intensity function. The intensity function map (Fig. 2) shows clearly that areas with the highest quantiles correspond ( Fig. 1 ) to areas belonging to the primary cluster detected by circular scan. But, the intensity function map also shows a significative number of areas (red color) with a high plausibility to belong to a possible real cluster and some areas (orange color) with intermediate to high intensity function values.