JFreeChart - XYBarChart Show Separate Bars for Each Series

Question

I\'m creating a XYBarChart using JFreeChart and adding multiple series to it. Currently for a given x-value and different Y-values from the series, all of them are getting s

Answer 1

EDIT Use ClusteredXYBarRenderer instead of XYBarRenderer. This draws adjacent bars (instead of StackedBars) and provides zooming capabilities.

There is no factory method in ChartFactory to create ClusteredXYBarRenderer.

Use the below method to create the Bar Chart.

private static JFreeChart createClusteredChart(String title, String categoryAxisLabel, String valueAxisLabel, IntervalXYDataset dataset) {

  NumberAxis domainAxis = new NumberAxis(categoryAxisLabel);
  domainAxis.setAutoRangeIncludesZero(false);

  ValueAxis valueAxis = new NumberAxis(valueAxisLabel);

  XYBarRenderer renderer = new ClusteredXYBarRenderer();

  XYPlot plot = new XYPlot(dataset, domainAxis, valueAxis, renderer);
  plot.setOrientation(PlotOrientation.VERTICAL);

  JFreeChart chart = new JFreeChart(title, JFreeChart.DEFAULT_TITLE_FONT, plot, true);

  return chart;
}

XYBarRenderer that you are using is correct. But I think you should use CategoryDataSet instead of XYSeriesCollection. Try using below dataset instead of XYSeriesCollection. This will produce adjacent bars instead of stacked bars.

private static CategoryDataset createDataset() {
  String series1 = "First";
  String series2 = "Second";
  String series3 = "Third";

  String category1 = "Category 1";
  String category2 = "Category 2";
  String category3 = "Category 3";
  String category4 = "Category 4";
  String category5 = "Category 5";

  DefaultCategoryDataset dataset = new DefaultCategoryDataset();

  dataset.addValue(1.0D, series1, category1);
  dataset.addValue(4.0D, series1, category2);
  dataset.addValue(3.0D, series1, category3);
  dataset.addValue(5.0D, series1, category4);
  dataset.addValue(5.0D, series1, category5);

  dataset.addValue(5.0D, series2, category1);
  dataset.addValue(7.0D, series2, category2);
  dataset.addValue(6.0D, series2, category3);
  dataset.addValue(8.0D, series2, category4);
  dataset.addValue(4.0D, series2, category5);

  dataset.addValue(4.0D, series3, category1);
  dataset.addValue(3.0D, series3, category2);
  dataset.addValue(2.0D, series3, category3);
  dataset.addValue(3.0D, series3, category4);
  dataset.addValue(6.0D, series3, category5);

  return dataset;
}