Using JFreeChart Scatter Plots is there a Way to Subdivide Styles for Data Sets?
You might consider the approaches mentioned here. The first implements DrawingSupplier, as shown here: class DefaultDrawingSupplier implements DrawingSupplier… The second extends DefaultDrawingSupplier, as shown here, to achieve a similar effect. Paint[] paintArray = {…}; plot.setDrawingSupplier(new DefaultDrawingSupplier( paintArray, … DefaultDrawingSupplier.DEFAULT_SHAPE_SEQUENCE)); Of course, you can always override getItemPaint(), as shown here.