Java – Change bar color in JFreeChart Bar Chart

javajfreechart

I'm making an application that takes some data and it needs to make a bar chart, but the color of a bar MUST be related to data that it is representing.

Imagine that I have this kind of data:
BANANA 430
WATER MELLON 300

Now I should make a bar chart, and I would like to paint the BANANA bar with yellow paint, and WATER MELLON bar with green paint. I'm using JFreeChart library in java.
My research led me to making my custom renderer, but then if I make custom renderer the colors will appear randomly on bars.
Any solution for this?

Best Answer

Maybe this http://www.java2s.com/Code/Java/Chart/JFreeChartBarChartDemo3differentcolorswithinaseries.htm can be of help.

See how the code below is used:

    final CategoryItemRenderer renderer = new CustomRenderer(
        new Paint[] {Color.red, Color.blue, Color.green,
            Color.yellow, Color.orange, Color.cyan,
            Color.magenta, Color.blue}
    );

Related Solutions

Java – JFreeChart Bar chart custom color

It was a while since i coded with jfreechart.Bud if i remember corectly this was code that i wrote to change bar paint ;).

    CategoryPlot cplot = (CategoryPlot)chart.getPlot();
    cplot.setBackgroundPaint(SystemColor.inactiveCaption);//change background color

    //set  bar chart color

    ((BarRenderer)cplot.getRenderer()).setBarPainter(new StandardBarPainter());

    BarRenderer r = (BarRenderer)chart.getCategoryPlot().getRenderer();
    r.setSeriesPaint(0, Color.blue);

Im looking at the code for my first application ever written.Im not sure if it will work now.

For future i recommend to google out or purchase PDF guide to jfreechart.You find all the references and samples there.Bud if you can ,skip to JavaFX i strongly recommend it ,working with jfreechart is pain.To be honest.Implementing charts in javafx is easy and looks way better ;)

Best Answer

Related Solutions

Java – JFreeChart Bar chart custom color

Related Topic