Barchart with 3 values

[raj_jfree]

Hi,
I need to create a bar chart with these data.
final double[][] data = new double[][] { { 10, 25, 35 } };
final double[][] count = new double[][] { { 40, 30, 20 } };
String[] columnKeyPrefix = new String[] { "Jan", "Feb", "Mar" };

my x-axis is jan,feb ,mar and my y-axis should in the data range .the values in each bar should be the count.

required chart:

.

when using defaultcategorydataset

Code: Select all

		DefaultCategoryDataset dataset = new DefaultCategoryDataset();
			for (int r = 0; r < data.length; r++) {
				String rowKey = "" + (r + 1);
				for (int c = 0; c < data[r].length; c++) {
					String columnKey = "" + columnKeyPrefix[c];
					dataset.addValue(new Double(data[r][c]), rowKey, columnKey);
				}
			

and set doing this

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barrenderer.setBaseItemLabelsVisible(true);
       barrenderer.setBaseItemLabelGenerator(new LabelGenerator());

i am able to get the chart but the labels displayed inside the bar are data values,but i want to display count values.


can anyone help me in solving this,

[remiohead]

You could do it by extending BarRenderer and overriding getItemLabelGenerator(int, int):

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@Override
public CategoryItemLabelGenerator getItemLabelGenerator(final int row, final int column) {
   String value = "40"; // Change to what you need for this data point
   StandardCategoryItemLabelGenerator lbl = 
      new StandardCategoryItemLabelGenerator(value, NumberFormat.getInstance());
   return lbl;
}