D. B. Carr, R. J. Littlefield, W. L. Nicholson, J. S. Littlefield
High-performance interaction with scatterplot matrices is a powerful approach to exploratory multivariate data analysis. For a small number of data points, real-time interaction is possible and overplotting is usually not a major problem. When the number of plotted points is large, however, display techniques that deal with overplotting and slow production are important. This article addresses these two problems. Topics include density representation by gray scale or by symbol area, alternatives to brushing, …
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