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    <p>Based on this <a href="https://stackoverflow.com/a/14158305/230513">example</a>, here's an <a href="http://sscce.org/" rel="nofollow noreferrer">sscce</a> that uses <code>setTickUnit()</code> to adjust the domain axis tick unit dynamically, starting from the value <code>5</code>.</p> <p><img src="https://i.stack.imgur.com/BZLir.png" alt="image"></p> <pre><code>import java.awt.BorderLayout; import java.awt.EventQueue; import java.util.Random; import javax.swing.JFrame; import javax.swing.JLabel; import javax.swing.JPanel; import javax.swing.JSpinner; import javax.swing.SpinnerNumberModel; import javax.swing.event.ChangeEvent; import javax.swing.event.ChangeListener; import org.jfree.chart.ChartFactory; import org.jfree.chart.ChartPanel; import org.jfree.chart.JFreeChart; import org.jfree.chart.axis.NumberAxis; import org.jfree.chart.axis.NumberTickUnit; import org.jfree.chart.plot.PlotOrientation; import org.jfree.chart.plot.XYPlot; import org.jfree.data.xy.XYSeries; import org.jfree.data.xy.XYSeriesCollection; /** @see https://stackoverflow.com/a/14167983/230513 */ public class SSCCE { private static final int COUNT = 100; private static final int UNITS = 5; private static final Random r = new Random(); public static void main(String[] args) { XYSeries series = new XYSeries("Data"); for (int i = 0; i &lt; COUNT; i++) { series.add(i, r.nextGaussian()); } XYSeriesCollection data = new XYSeriesCollection(series); final JFreeChart chart = ChartFactory.createXYLineChart("TickUnits", "X", "Y", data, PlotOrientation.VERTICAL, true, true, false); XYPlot plot = (XYPlot) chart.getPlot(); final NumberAxis xAxis = (NumberAxis) plot.getDomainAxis(); xAxis.setTickUnit(new NumberTickUnit(UNITS)); EventQueue.invokeLater(new Runnable() { @Override public void run() { JFrame f = new JFrame("TickUnitDemo"); f.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE); f.add(new ChartPanel(chart)); final JSpinner spinner = new JSpinner( new SpinnerNumberModel(UNITS, 1, COUNT, 1)); spinner.addChangeListener(new ChangeListener() { @Override public void stateChanged(ChangeEvent e) { JSpinner s = (JSpinner) e.getSource(); Number n = (Number) s.getValue(); xAxis.setTickUnit(new NumberTickUnit(n.intValue())); } }); JPanel p = new JPanel(); p.add(new JLabel(chart.getTitle().getText())); p.add(spinner); f.add(p, BorderLayout.SOUTH); f.pack(); f.setLocationRelativeTo(null); f.setVisible(true); } }); } } </code></pre>
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