plot/area

(rectangles [rects : int fill : int label : cstr] :)

draw filled rectangles from nested cons quads.

(area-histogram [bars : int fill-styles : int label : cstr] :)

draw pre-bucketed bars with cycling fills.

(discrete-histogram [bars : int fill : int invert : int label : cstr] :)

categorical bar chart.

(stacked-histogram [groups : int fills : int labels : int invert : int] :)

stacked categorical bars.