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I want draw a Parabolic SAR line use JFreeChart which is a technical indicator of stock.
Help me please ! Thanks.

You have to create a timeseries and change the renderer to XYDotRenderer.......

ChartRenderer = new XYDotRenderer();
((XYDotRenderer) ChartRenderer).setDotHeight(4);
((XYDotRenderer) ChartRenderer).setDotWidth(4);