A visualization experiment for displaying fuzzy graphs (Rosenfeld 1975, in Fuzzy Sets and Their Applications to Cognitive and Decision Processes, page 77). Each node has a degree of membership to the set of graph nodes, encoded with its area (in red). The maximum degree of membership (i.e., 1) is represented as a gray circle of unit area. Links have a degree as well, linearly encoded with their thickness (dark gray). The maximum degree for links is limited by the minimum value between the degrees of the nodes it connnects, and is represented with a light gray line, while the unconstrained maximum degree (i.e., 1) is shown as a dotted, empty line.