Jfreechart - Refresh a chart according to changing data

java refresh jfreechart
Johann picture Johann · Jun 1, 2011 · Viewed 29.6k times · Source

I would like to know how to refresh a chart if we want to change "in live" some piece of data. I mean for instance, I have a chart with a TaskSeries which appears on 3 years and I would like to change 3 years by 5 years. I want the chart to change immediately.

Is there some kind of update chart or something like that ?

I know that you could say "get your TaskSeries, do your changes and it will be refreshed automatically" but my TaskSeries are generated and I cannot easily change these ones. That's why I would like to find a way to recalculate and to rebuild the whole chart.

Answer

trashgod picture trashgod · Jun 1, 2011

The add() method of TaskSeries automatically sends a SeriesChangeEvent to all registered listeners, e.g. CategoryPlot. In this example, DynamicTimeSeriesCollection implements SeriesChangeEvent. In this case, the chart's XYPlot is a registered listener.

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