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

Introduction

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

Source

/* *********************************************************************** *
 * project: org.matsim.*
 * ChartsAxisUnifier.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 java.util.ArrayList;
import java.util.List;

import org.jfree.chart.JFreeChart;
import org.jfree.chart.axis.ValueAxis;
import org.jfree.chart.plot.CategoryPlot;
import org.jfree.chart.plot.Plot;
import org.jfree.chart.plot.XYPlot;
import org.jfree.data.Range;
import org.matsim.core.utils.charts.ChartUtil;

/**
 * Given a list of charts, set all Y and/or X axis to the same range.
 * the Axis must be of type ValueAxis (if not, they are ignored).
 * the charts must contain plots of type XYPlot or CategoryPlot
 * @author thibautd
 */
public class ChartsAxisUnifier {
    final boolean unifyX;
    final boolean unifyY;

    double lowerX = Double.POSITIVE_INFINITY;
    double lowerY = Double.POSITIVE_INFINITY;
    double upperX = Double.NEGATIVE_INFINITY;
    double upperY = Double.NEGATIVE_INFINITY;

    private final List<JFreeChart> charts = new ArrayList<JFreeChart>();

    public ChartsAxisUnifier(final boolean unifyX, final boolean unifyY) {
        this.unifyX = unifyX;
        this.unifyY = unifyY;
    }

    public void addChart(final ChartUtil chart) {
        addChart(chart.getChart());
    }

    public void addChart(final JFreeChart chart) {
        charts.add(chart);

        if (unifyX) {
            Plot plot = chart.getPlot();
            if (plot instanceof XYPlot) {
                ValueAxis axis = chart.getXYPlot().getDomainAxis();

                Range range = axis.getRange();
                lowerX = Math.min(lowerX, range.getLowerBound());
                upperX = Math.max(upperX, range.getUpperBound());
            }
        }

        if (unifyY) {
            Plot plot = chart.getPlot();
            ValueAxis axis;
            if (plot instanceof XYPlot) {
                axis = chart.getXYPlot().getRangeAxis();
            } else if (plot instanceof CategoryPlot) {
                axis = chart.getCategoryPlot().getRangeAxis();
            } else {
                return;
            }

            Range range = axis.getRange();
            lowerY = Math.min(lowerY, range.getLowerBound());
            upperY = Math.max(upperY, range.getUpperBound());
        }
    }

    public void applyUniformisation() {
        for (JFreeChart chart : charts) {
            Plot plot = chart.getPlot();
            ValueAxis xAxis = null;
            ValueAxis yAxis = null;

            if (plot instanceof XYPlot) {
                xAxis = unifyX ? chart.getXYPlot().getDomainAxis() : null;
                yAxis = unifyY ? chart.getXYPlot().getRangeAxis() : null;
            } else if (plot instanceof CategoryPlot) {
                yAxis = unifyY ? chart.getCategoryPlot().getRangeAxis() : null;
            }

            if (xAxis != null)
                xAxis.setRange(lowerX, upperX);
            if (yAxis != null)
                yAxis.setRange(lowerY, upperY);
        }
    }
}