20.1.15  Pie charts

You can draw pie charts using the same structure as bar plots.

The camembert command draws pie charts.

• camembert takes one mandatory argument and one optional argument:
  • M, a matrix, where each row consists of a label followed by one or more values. If the labels are followed by more than one value, then the first row needs to be identifiers.
  • Optionally, color=cols, where cols is a list of two or more color objects (see Section 19.1.3). By default, cols=[black,red,green,yellow,blue, magenta,cyan].
• camembert(M) draws a pie chart with a sector for each label, whose size is determined by the corresponding value. If the matrix has more than two columns, then there will be a pie chart for each column of values. Pie slices are filled with colors from cols such that the color index cycles counter-clockwise through the list (starting from the lowest slice in the first quadrant).

Examples