import com.imsl.chart.*;
import java.awt.Color;

public class SampleBarGroupStack extends JFrameChart {
    static final Color darkRed = new Color(196,0,0);
    static final Color lightBlue = new Color(196,185,253);
    
    public SampleBarGroupStack() {
        Chart chart = getChart();
        AxisXY axis = new AxisXY(chart);
        // y is a 2 by 3 by 4 array
        double y[][][] = {
            {{4,2,3,9},{8,4,2,3},{1,5,3,8}},
            {{6,7,5,2},{4,1,7,2},{8,5,6,1}}
        };
        Bar bar = new Bar(axis, y);
        bar.setBarType(Bar.BAR_TYPE_VERTICAL);
        bar.setLabels(new String[]{"A","B","C","D"});
        // group 0 - shades of red
        bar.getBarSet(0,0).setFillColor(Color.red);
        bar.getBarSet(1,0).setFillColor(darkRed);
        // group 1 - shades of blue
        bar.getBarSet(0,1).setFillColor(Color.blue);
        bar.getBarSet(1,1).setFillColor(lightBlue);
        // group 2 - shades of gray
        bar.getBarSet(0,2).setFillColor(Color.gray);
        bar.getBarSet(1,2).setFillColor(Color.lightGray);
    }
    
    public static void main(String argv[]) {
        new SampleBarGroupStack().setVisible(true);
    }
}