private static JFreeChart createCombinedChart() {
// create plot ...
IntervalXYDataset data1 = createDataset1();
XYItemRenderer renderer1 = new XYLineAndShapeRenderer(true, false);
renderer1.setBaseToolTipGenerator(new StandardXYToolTipGenerator(
StandardXYToolTipGenerator.DEFAULT_TOOL_TIP_FORMAT,
new SimpleDateFormat("d-MMM-yyyy"), new DecimalFormat("0.00")));
renderer1.setSeriesStroke(0, new BasicStroke(4.0f,
BasicStroke.CAP_ROUND, BasicStroke.JOIN_BEVEL));
renderer1.setSeriesPaint(0, Color.blue);
DateAxis domainAxis = new DateAxis("Year");
domainAxis.setLowerMargin(0.0);
domainAxis.setUpperMargin(0.02);
ValueAxis rangeAxis = new NumberAxis("$billion");
XYPlot plot1 = new XYPlot(data1, null, rangeAxis, renderer1);
plot1.setBackgroundPaint(Color.lightGray);
plot1.setDomainGridlinePaint(Color.white);
plot1.setRangeGridlinePaint(Color.white);
// add a second dataset and renderer...
IntervalXYDataset data2 = createDataset2();
XYBarRenderer renderer2 = new XYBarRenderer() {
public Paint getItemPaint(int series, int item) {
XYDataset dataset = getPlot().getDataset();
if (dataset.getYValue(series, item) >= 0.0) {
return Color.red;
}
else {
return Color.green;
}
}
};
renderer2.setSeriesPaint(0, Color.red);
renderer2.setDrawBarOutline(false);
renderer2.setBaseToolTipGenerator(new StandardXYToolTipGenerator(
StandardXYToolTipGenerator.DEFAULT_TOOL_TIP_FORMAT,
new SimpleDateFormat("d-MMM-yyyy"), new DecimalFormat("0.00")));
XYPlot plot2 = new XYPlot(data2, null, new NumberAxis("$billion"),
renderer2);