I have a bar graph with category data set.Can someonehelp me find away in which I can display the bars in each catergory together without gap between them.And how can I chage the color of the bars to suit my needs.
Thanks in Advance
Hari
My Code for reference
String series1 = "Self Mark";
String series2 = "Overall Mark";
// column keys...
String category1 = "Benevolent";
String category2 = "Critical";
String category3 = "Developmental";
// create the dataset...
DefaultCategoryDataset dataset = new DefaultCategoryDataset();
dataset.addValue(10, series1, category1);
dataset.addValue(10, series1, category2);
dataset.addValue(80, series1, category3);
dataset.addValue(20, series2, category1);
dataset.addValue(10, series2, category2);
dataset.addValue(70, series2, category3);
JFreeChart barChart=ChartFactory.createBarChart
(
"BarChartDemo",
"Category",
"Value",
dataset,
PlotOrientation.VERTICAL,
true,
false,
false
);
CategoryPlot plot = barChart.getCategoryPlot();
plot.setBackgroundPaint(Color.lightGray);
plot.setDomainGridlinePaint(Color.white);
plot.setDomainGridlinesVisible(true);
plot.setRangeGridlinePaint(Color.white);
BarRenderer renderer = (BarRenderer)plot.getRenderer();
//to control spacing, adjust accordingly
renderer.setItemMargin(0.00010);
renderer.setMaximumBarWidth(0.05);
renderer.setSeriesPaint(0, Color.white);
renderer.setSeriesPaint(1, Color.black);
try {
ChartUtilities.saveChartAsPNG(new java.io.File("C:\\hari2.png"), barChart, 500, 300);
} catch (java.io.IOException exc) {
System.err.println("Error writing image to file");
}
}
}