www.jfree.org

The answer is yes and no. I did in my coding enviroment (NetBeans) but haven't in the packaged .jar. After updating the applet works wonders! Thanks a lot!

Code that reflects the error might be helpful.

Sadly my jfreechart experience is limited to Windows enviroments. Anyway the JVM's should be equivalet in both systems (Linux & Windows) based on the portability of JAVA. But it might need some tweaks in linux.

The version you are using is not stable try upgrading first to version 1.0.1. From the error I can't do much to help. It might be servlet.jar missing?

I migrated to jfreechart 1.0.1 and the applets now have trouble displaying in jsp pages. Exception in thread "AWT-EventQueue-3" java.lang.NoSuchMethodError: org.jfree.text.TextBlock.setLineAlignment(Lorg/jfree/ui/HorizontalAlignment;)V at org.jfree.chart.title.TextTitle.arrangeRR(TextTitle.java:491)...

For events see Chapter 26 in the guide. Another way to update a series is public void setDataset(int index, CategoryDataset dataset); Assigns a dataset to the plot. The new dataset replaces any existing dataset at the specified index. It is permitted to set a dataset to null (in that case, no data w...

You have the developer's guide? There are events fired when certain things change, i.e. the data set. If you use those to your advantage you'll update each time the data changes. So you update when only when needed.

http://www.javaworld.com/javaworld/jw-1 ... ofile.html

The developer's guide has more interesting examples, but this will do the trick.

What version of JFreeChart you have? It works for me. I'm in the latest version. My code is working.

About the refreshing period it depends on how you'll update the data. It doesn't make sense to update each sec for example. Use the events instead.

Give me more details to see if I can help.

See jfreeChart documentation for more details.

Found it! Here's my answer: jButton.addActionListener(new java.awt.event.ActionListener() { public void actionPerformed(java.awt.event.ActionEvent e) { dataset.getSeries(0).getDataItem(3).setY(400); chartPanel.firePropertyChange("a",true,true); chartPanel.repaint(); chartPanel.zoomOutRange(1.1,1.1);...

For the refreshing problem add the following:
in the button action listener.

Still working on the axis resizing problem.

Tried your solution but something's missing. I've never tried to build a graph from scratch, always used ChartFactory. Any help/idea?

I'll try that out.

Isn't there a way to create a JThermometer chart with chart factory? Or maybe an example from both (JThermometer and Meter) will be great!

I'm trying to figure out hoe to create those since no ChartFactory method are availabel for them. I thought JThermometer was a Plot but it didn't work. I tried the following: JFreeChart chart = new JFreeChart(new JThermometer()); but didn't work. I think I can work with the javadocs about settings a...