if (urls) {
renderer.setItemURLGenerator(new StandardCategoryURLGenerator());
}
CategoryPlot plot = new CategoryPlot(dataset, categoryAxis, valueAxis, renderer);
plot.clearRangeMarkers();
Marker baseline = new ValueMarker(0.0);
baseline.setPaint(Color.black);
plot.addRangeMarker(baseline, Layer.FOREGROUND);
plot.setOrientation(orientation);
JFreeChart chart = new JFreeChart(title, JFreeChart.DEFAULT_TITLE_FONT, plot, legend);