For the highest level graphics (elegant, custom, expensive), enter the crunched data or the graphical output into Adobe Illustrator. ... This program gives complete control over typography, line weight, color, grids, layout—just what we need for doing graphical work. It is a serious, complex design program; you may want to work with real graphical designers who will surely know their way around Illustrator.
— Edward Tufte, Ask E.T.: Graphing Software