>pie charts beyond about three wedges are utterly useless to the colorblind The problem lies in using a color-coded legend, not in using pie charts per se. Th

>pie charts beyond about three wedges are utterly useless to the colorblind The problem lies in using a color-coded legend, not in using pie charts per se. The slices of a pie chart can be labelled directly (instead of indirectly via a legend), e.g., http://www.fedstats.gov/kids/mapstats/graphics/pie.gif http://www.fedstats.gov/kids/mapstats/graphics/pie.gif