Closing up blank space in JFreeChart bar chart

Question

I am using JFreeChart and would like to display a bar chart of player\'s scores, with the score on the y-axis and the player\'s games grouped on the x-axis.

Answer 1

First Look at the Picture carefully

Here is some Explanation w.r.t Numbers.

1. setLowerMargin(Double margin).
2. setUpperMargin(Double margin).
3. setCategoryMargin(Double margin).
4. setItemMargin(Double margin).

Here is How you can use the methods in your chart

 CategoryPlot p = chart.getCategoryPlot(); 

 CategoryAxis axis = p.getDomainAxis();
 axis.setLowerMargin(0.1);
 axis.setUpperMargin(0.1);
 axis.setCategoryMargin(0.1);
 BarRenderer renderer = (BarRenderer) p.getRenderer();
 renderer.setItemMargin(0.1); 

You can set the value between 0.0 to 1.0 (example 0.1 means 10%)

Hope this Helps

(Update After your comment) Well in this Case you should use Layered Bar Chart