YX line charts -- as opposed to XY line charts

[oboguev]

JFreeChart has facilities to draw a line representing y = f(x).
Is there a way to draw x = f(y)?

Basically, a chart rotated 90 degrees where one "x" value can correspond to multiple "y" values.

An example is a population pyramid drawn with lines, with age steps of 1 year (0...100).
"Y" is age, "X" is population size for this age.

There is a PopulationChartDemo1, but it uses filled bars which does not work when you need to plot two or three pyramids for visual comparison,

Thanks.

[trashgod]

You may be looking for PlotOrientation; see ChartFactory for typical use-cases.