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Sometimes you need RegularTimePeriod like Quarter of Hour or Third of a Day or something like that. So that this would be very easy to do I have written this. /** * User: zanel * Date: 2005.6.10 * Time: 10:50:29 */ package org.jfree.chart.demo.myDemo; import org.jfree.data.time.Hour; import java.uti...

Use ScatterPlot and then set the shapes with renderer.setSeriesShape(...)

David you are right.
The ClusteredXYBarRenderer is the right solution.

I have done it.

I wrote new class DynamicRegularTimePeriod that extends RegularTimePeriod.

It would be good that this would be in JfreeChart source.

/** * User: zanel * Date: 2004.6.2 * Time: 15:44:16 */ package com.generalynx.gema.chart.axis; import org.jfree.chart.axis.DateAxis; import org.jfree.chart.axis.DateTick; import org.jfree.chart.axis.DateTickUnit; import org.jfree.chart.axis.Tick; import org.jfree.ui.RectangleEdge; import org.jfree....

See

http://www.jfree.org/phpBB2/viewtopic.php?t=10898