15. The system of claim 12 , wherein the graphical user interface further displays the vertices of the 2D graph in color and wherein vertices that are close to each other are displayed in similar colors.
15. The system of claim 12 , wherein the graphical user interface further displays the vertices of the 2D graph in color and wherein vertices that are close to each other are displayed in similar colors. 18. The system of claim 15 wherein the color of the vertices changes according to polar coordinates of the vertices' locations from 0° to 360°.