||The array of values for the bars.
||The array of values for the bar heights.
||The number of data points.
||= 0 Outline histogram. The outline of the histogram is drawn in the
current active line color.
= 1 Hollow bar histogram. Bars are outlined in the colors specified
by the colors array.
= 2 Filled bar histogram. Bars are filled with the panel filling pattern
specified by the colors array.
||An array of GraphiC color values to
be used for coloring each bar. If the bars are to be colored individually,
the array must have dimension npts. If the array is NULL, the currently
active color will be used for all of the bars.