Abstract
Recent advances in graphing software and output devices have given new tools to graphic artists and have enabled writers and technicians to compose graphs that rival those of professional artists. The products of both professionals and novices suggest, however, that the users of such software either intend to distort data and manipulate their readers or that they do so out of ignorance. This article describes and illustrates seven types of distortion in graphs, explains the mechanisms of distortion, and recommends methods for the avoidance of distortion. The seven types include manipulations of scale ratios, of the second dimension, of the third dimension, of color, of composition, of symbolism, and of affect.
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