playground.thibautd.utils.charts.XYChartUtils.java Source code

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Here is the source code for playground.thibautd.utils.charts.XYChartUtils.java

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/* *********************************************************************** *
 * project: org.matsim.*
 * XYChartUtils.java
 *                                                                         *
 * *********************************************************************** *
 *                                                                         *
 * copyright       : (C) 2011 by the members listed in the COPYING,        *
 *                   LICENSE and WARRANTY file.                            *
 * email           : info at matsim dot org                                *
 *                                                                         *
 * *********************************************************************** *
 *                                                                         *
 *   This program is free software; you can redistribute it and/or modify  *
 *   it under the terms of the GNU General Public License as published by  *
 *   the Free Software Foundation; either version 2 of the License, or     *
 *   (at your option) any later version.                                   *
 *   See also COPYING, LICENSE and WARRANTY file                           *
 *                                                                         *
 * *********************************************************************** */
package playground.thibautd.utils.charts;

import org.jfree.chart.JFreeChart;
import org.jfree.chart.axis.NumberAxis;
import org.jfree.chart.axis.NumberTickUnit;
import org.jfree.chart.axis.ValueAxis;

/**
 * provides static functions to perform usual XYPlot manipulation.
 * @author thibautd
 */
public class XYChartUtils {

    private XYChartUtils() {
    }

    /**
     * Sets the X axis of an XYPlot chart to a {@link NumberAxis}
     * with integer values.
     */
    public static void integerXAxis(final JFreeChart chart) {
        ValueAxis axis = (chart.getXYPlot()).getDomainAxis();
        NumberAxis numberAxis;
        if (axis instanceof NumberAxis) {
            numberAxis = (NumberAxis) axis;
        } else {
            numberAxis = new NumberAxis();
            (chart.getXYPlot()).setDomainAxis(numberAxis);
        }

        numberAxis.setTickUnit((NumberTickUnit) NumberAxis.createIntegerTickUnits().getCeilingTickUnit(1d));
        numberAxis.setAutoRangeIncludesZero(false);
    }

    /**
     * Sets the X axis of an XYPlot chart to a {@link NumberAxis}
     * with integer values.
     */
    public static void integerYAxis(final JFreeChart chart) {
        ValueAxis axis = (chart.getXYPlot()).getRangeAxis();
        NumberAxis numberAxis;
        if (axis instanceof NumberAxis) {
            numberAxis = (NumberAxis) axis;
        } else {
            numberAxis = new NumberAxis();
            (chart.getXYPlot()).setRangeAxis(numberAxis);
        }

        numberAxis.setTickUnit((NumberTickUnit) NumberAxis.createIntegerTickUnits().getCeilingTickUnit(1d));
        numberAxis.setAutoRangeIncludesZero(false);
    }

    /**
     * Sets the X and the Y axes of an XYPlot to use integer values.
     */
    public static void integerAxes(final JFreeChart chart) {
        integerXAxis(chart);
        integerYAxis(chart);
    }
}