Graphic representation constitutes one of the basic sign-systems conceived by the human mind for the purposes of storing, understanding, and communic… - Jacques Bertin

The plane is the mainstay of all graphic representation. It is so familiar that its properties seem self-evident, but the most familiar things are often the most poorly understood. The plane is homogeneous and has two dimensions. The visual consequences of these properties must be fully explored.

The aim of the graphic is to make the relationship among previously defined sets appear.

The problem that still remains to be solved is that of the orderable matrix, that needs the use of imagination... When the two components of a data table are orderable, the normal construction is the orderable matrix. Its permutations show the analogy and the complementary nature that exist between the algorithmic treatments and the graphical treatments.