starPie is intended to display a visual analog of the relative value of matched attributes of a number of similar objects or groups. Thus objects having similar attributes will produce similar looking starPies. When constructing such a matrix, it is necessary for maxval to be specified, usually as the overall maximum value in any of the attribute value vectors. If maxval is not specified in such a situation, only the relative values within each vector will determine the radial extents of each starPie. There appears to be no reason to have different sector colors for different objects, but the user can display more than one set of starPies on a plot with different sector colors if necessary.
starPie calls getYmult to automatically adjust for both the aspect and coordinate ratio of the plot.