Zeileis, Achim; Hornik, Kurt; Murrell, Paul - In: Computational Statistics & Data Analysis 53 (2009) 9, pp. 3259-3270
Statistical graphics are often augmented by the use of color coding information contained in some variable. When this involves the shading of areas (and not only points or lines)--e.g., as in bar plots, pie charts, mosaic displays or heatmaps--it is important that the colors are perceptually...