Example usage for org.jfree.chart.axis CategoryAxis setCategoryMargin

List of usage examples for org.jfree.chart.axis CategoryAxis setCategoryMargin

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  6. setCategoryMargin

Introduction

In this page you can find the example usage for org.jfree.chart.axis CategoryAxis setCategoryMargin.

Prototype

public void setCategoryMargin(double margin)

Source Link

Document

Sets the category margin and sends an AxisChangeEvent to all registered listeners.

Usage

From source file:org.jenkinsci.plugins.autozoil.graph.AutozoilGraph.java

/**
 * Creates a Autozoil trend graph// ww  w  .j  a v  a 2  s  .c om
 *
 * @return the JFreeChart graph object
 */
protected JFreeChart createGraph() {

    final JFreeChart chart = ChartFactory.createLineChart(null, // chart title
            null, // unused
            yLabel, // range axis label
            categoryDataset, // data
            PlotOrientation.VERTICAL, // orientation
            true, // include legend
            true, // tooltips
            false // urls
    );

    // NOW DO SOME OPTIONAL CUSTOMISATION OF THE CHART...

    final LegendTitle legend = chart.getLegend();
    legend.setPosition(RectangleEdge.RIGHT);

    chart.setBackgroundPaint(Color.white);

    final CategoryPlot plot = chart.getCategoryPlot();

    // plot.setAxisOffset(new Spacer(Spacer.ABSOLUTE, 5.0, 5.0, 5.0, 5.0));
    plot.setBackgroundPaint(Color.WHITE);
    plot.setOutlinePaint(null);
    plot.setRangeGridlinesVisible(true);
    plot.setRangeGridlinePaint(Color.black);

    CategoryAxis domainAxis = new ShiftedCategoryAxis(null);
    plot.setDomainAxis(domainAxis);
    domainAxis.setCategoryLabelPositions(CategoryLabelPositions.UP_90);
    domainAxis.setLowerMargin(0.0);
    domainAxis.setUpperMargin(0.0);
    domainAxis.setCategoryMargin(0.0);

    final NumberAxis rangeAxis = (NumberAxis) plot.getRangeAxis();
    rangeAxis.setStandardTickUnits(NumberAxis.createIntegerTickUnits());
    rangeAxis.setLowerBound(0);
    rangeAxis.setAutoRange(true);

    final LineAndShapeRenderer renderer = (LineAndShapeRenderer) plot.getRenderer();
    renderer.setBaseStroke(new BasicStroke(2.0f));
    ColorPalette.apply(renderer);

    // crop extra space around the graph
    plot.setInsets(new RectangleInsets(5.0, 0, 0, 5.0));

    return chart;
}

From source file:hudson.plugins.robot.graph.RobotGraph.java

/**
 * Creates a Robot trend graph//from ww w  . ja  v  a2s.  c o m
 * @return the JFreeChart graph object
 */
protected JFreeChart createGraph() {

    final JFreeChart chart = ChartFactory.createStackedAreaChart(null, null, yLabel, categoryDataset,
            PlotOrientation.VERTICAL, true, true, false);

    final LegendTitle legend = chart.getLegend();
    legend.setPosition(RectangleEdge.RIGHT);

    chart.setBackgroundPaint(Color.white);

    final CategoryPlot plot = (CategoryPlot) chart.getPlot();
    plot.setForegroundAlpha(0.7f);
    plot.setBackgroundPaint(Color.white);
    plot.setRangeGridlinePaint(Color.darkGray);

    final CategoryAxis domainAxis = new ShiftedCategoryAxis(xLabel);
    domainAxis.setCategoryLabelPositions(CategoryLabelPositions.UP_45);
    domainAxis.setLowerMargin(0.0);
    domainAxis.setUpperMargin(0.0);
    domainAxis.setCategoryMargin(0.0);
    plot.setDomainAxis(domainAxis);

    final NumberAxis rangeAxis = (NumberAxis) plot.getRangeAxis();
    rangeAxis.setStandardTickUnits(NumberAxis.createIntegerTickUnits());
    if (binaryData) {
        rangeAxis.setUpperBound(1);
    } else if (upperBound != 0) {
        rangeAxis.setUpperBound(upperBound);
    } else {
        rangeAxis.setAutoRange(true);
    }
    rangeAxis.setLowerBound(lowerBound);
    Font font = new Font("Dialog", Font.PLAIN, fontSize);
    plot.getDomainAxis().setLabelFont(font);
    plot.getDomainAxis().setTickLabelFont(font);
    plot.getRangeAxis().setLabelFont(font);
    plot.getRangeAxis().setTickLabelFont(font);
    legend.setItemFont(font);
    final CategoryItemRenderer renderer = plot.getRenderer();

    for (int i = 0; i < colors.length; i++) {
        renderer.setSeriesPaint(i, colors[i]);
    }

    plot.setInsets(new RectangleInsets(15.0, 0, 0, 5.0));

    return chart;
}

From source file:info.novatec.testit.livingdoc.confluence.macros.historic.AggregationExecutionChartBuilder.java

@SuppressWarnings("deprecation")
private void customizeChart(JFreeChart chart) throws IOException {
    chart.setBackgroundPaint(Color.white);
    chart.setBorderVisible(settings.isBorder());

    TextTitle chartTitle = chart.getTitle();
    customizeTitle(chartTitle, DEFAULT_TITLE_FONT);

    addSubTitle(chart, settings.getSubTitle(), DEFAULT_SUBTITLE_FONT);
    addSubTitle(chart, settings.getSubTitle2(), DEFAULT_SUBTITLE2_FONT);

    CategoryPlot plot = (CategoryPlot) chart.getPlot();
    plot.setNoDataMessage(ldUtil.getText("livingdoc.historic.nodata"));

    StackedBarRenderer renderer = new StackedBarRenderer(true);
    plot.setRenderer(renderer);//  www. j a  v a 2  s .  c o m

    int index = 0;
    renderer.setSeriesPaint(index++, GREEN_COLOR);
    if (settings.isShowIgnored()) {
        renderer.setSeriesPaint(index++, Color.yellow);
    }
    renderer.setSeriesPaint(index, Color.red);

    renderer.setToolTipGenerator(new DefaultTooltipGenerator());
    renderer.setItemURLGenerator(new CategoryURLGenerator() {

        @Override
        public String generateURL(CategoryDataset data, int series, int category) {
            Comparable<?> valueKey = data.getColumnKey(category);
            ChartLongValue value = (ChartLongValue) valueKey;
            return "javascript:" + settings.getExecutionUID() + "_showHistoricChart('" + value.getId() + "');";
        }
    });

    CategoryAxis domainAxis = plot.getDomainAxis();
    customizeAxis(domainAxis);
    domainAxis.setCategoryLabelPositions(CategoryLabelPositions.UP_90);
    domainAxis.setCategoryMargin(0.01);

    ValueAxis rangeAxis = plot.getRangeAxis();
    customizeAxis(rangeAxis);
    rangeAxis.setLowerBound(0);
    rangeAxis.setUpperBound(1.0);

    if (rangeAxis instanceof NumberAxis) {
        NumberAxis numberAxis = (NumberAxis) rangeAxis;
        numberAxis.setTickUnit(new NumberTickUnit(.10));
        numberAxis.setNumberFormatOverride(PERCENT_FORMATTER);
    }

    plot.setForegroundAlpha(0.8f);
}

From source file:hudson.plugins.testlink.TestLinkGraph.java

/**
 * Creates TestLink trend graph.//from ww  w. j a va  2  s .  co  m
 * 
 * @return the JFreeChart graph object.
 */
protected JFreeChart createGraph() {
    final JFreeChart chart = ChartFactory.createLineChart(null, null, yLabel, categoryDataset,
            PlotOrientation.VERTICAL, true, true, false);

    final LegendTitle legend = chart.getLegend();
    legend.setPosition(RectangleEdge.RIGHT);

    chart.setBackgroundPaint(Color.white);

    final CategoryPlot plot = (CategoryPlot) chart.getPlot();
    plot.setForegroundAlpha(0.8f);
    plot.setBackgroundPaint(Color.white);
    plot.setRangeGridlinePaint(Color.darkGray);

    final CategoryAxis domainAxis = new ShiftedCategoryAxis(xLabel);
    domainAxis.setCategoryLabelPositions(CategoryLabelPositions.UP_45);
    domainAxis.setLowerMargin(0.0);
    domainAxis.setUpperMargin(0.0);
    domainAxis.setCategoryMargin(0.0);
    plot.setDomainAxis(domainAxis);

    final NumberAxis rangeAxis = (NumberAxis) plot.getRangeAxis();
    rangeAxis.setStandardTickUnits(NumberAxis.createIntegerTickUnits());
    rangeAxis.setAutoRange(true);
    rangeAxis.setAutoRangeMinimumSize(5);
    rangeAxis.setLowerBound(0);

    final CategoryItemRenderer renderer = plot.getRenderer();

    renderer.setSeriesStroke(0, new BasicStroke(3.0f, BasicStroke.CAP_BUTT, BasicStroke.CAP_BUTT, 1.0f,
            new float[] { 1.0f, 1.0f }, 0.0f));
    renderer.setSeriesPaint(0, new Color(35, 20, 89));

    renderer.setSeriesStroke(1, new BasicStroke(3.0f, BasicStroke.CAP_BUTT, BasicStroke.CAP_BUTT, 1.0f,
            new float[] { 1.0f, 1.0f }, 0.0f));
    renderer.setSeriesPaint(1, new Color(0, 145, 0));

    renderer.setSeriesStroke(2, new BasicStroke(3.0f, BasicStroke.CAP_BUTT, BasicStroke.CAP_BUTT, 1.0f,
            new float[] { 1.0f, 1.0f }, 0.0f));
    renderer.setSeriesPaint(2, new Color(207, 69, 21));

    renderer.setSeriesStroke(3, new BasicStroke(3.0f, BasicStroke.CAP_BUTT, BasicStroke.CAP_BUTT, 1.0f,
            new float[] { 1.0f, 1.0f }, 0.0f));
    renderer.setSeriesPaint(3, Color.orange);

    plot.setInsets(new RectangleInsets(5.0, 0, 0, 5.0));

    return chart;
}

From source file:it.eng.spagobi.engines.chart.bo.charttypes.targetcharts.WinLose.java

@Override
public JFreeChart createChart(DatasetMap datasets) {
    logger.debug("IN");
    DefaultCategoryDataset dataset = (DefaultCategoryDataset) datasets.getDatasets().get("1");

    JFreeChart chart = ChartFactory.createBarChart(name, null, null, dataset, PlotOrientation.VERTICAL, legend,
            false, false);//w  w w  .  j  a  v  a2  s.  c  o m
    chart.setBorderVisible(false);
    chart.setBackgroundPaint(color);

    TextTitle title = setStyleTitle(name, styleTitle);
    chart.setTitle(title);
    if (subName != null && !subName.equals("")) {
        TextTitle subTitle = setStyleTitle(subName, styleSubTitle);
        chart.addSubtitle(subTitle);
    }

    CategoryPlot plot = chart.getCategoryPlot();
    plot.setOutlineVisible(false);
    plot.setInsets(new RectangleInsets(0.0, 0.0, 0.0, 0.0));
    plot.setBackgroundPaint(color);
    plot.setDomainGridlinesVisible(false);
    plot.setRangeGridlinesVisible(false);
    plot.setRangeCrosshairVisible(true);
    plot.setRangeCrosshairStroke(new BasicStroke(1f, BasicStroke.CAP_BUTT, BasicStroke.JOIN_BEVEL));
    plot.setRangeCrosshairPaint(color.BLACK);

    // customize axes 
    CategoryAxis domainAxis = plot.getDomainAxis();
    domainAxis.setVisible(false);
    domainAxis.setCategoryMargin(0.2);

    NumberAxis rangeAxis = (NumberAxis) plot.getRangeAxis();
    rangeAxis.setVisible(false);
    rangeAxis.setRange(new Range(-(barHeight + 0.2), (barHeight + 0.2)));

    // customize renderer 
    MyBarRendererThresholdPaint renderer = new MyBarRendererThresholdPaint(useTargets, thresholds, dataset,
            timeSeries, nullValues, bottomThreshold, color);

    if (wlt_mode.doubleValue() == 0) {
        renderer.setBaseItemLabelsVisible(Boolean.FALSE, true);
    } else {
        renderer.setBaseItemLabelsVisible(Boolean.TRUE, true);
        renderer.setBaseItemLabelFont(
                new Font(styleValueLabels.getFontName(), Font.PLAIN, styleValueLabels.getSize()));
        renderer.setBaseItemLabelPaint(styleValueLabels.getColor());
        renderer.setBaseItemLabelGenerator(
                new StandardCategoryItemLabelGenerator("{2}", new DecimalFormat("0.#")) {
                    public String generateLabel(CategoryDataset dataset, int row, int column) {
                        if (dataset.getValue(row, column) == null
                                || dataset.getValue(row, column).doubleValue() == 0)
                            return "";
                        String columnKey = (String) dataset.getColumnKey(column);
                        int separator = columnKey.indexOf('-');
                        String month = columnKey.substring(0, separator);
                        String year = columnKey.substring(separator + 1);
                        int monthNum = Integer.parseInt(month);
                        if (wlt_mode.doubleValue() >= 1 && wlt_mode.doubleValue() <= 4) {
                            if (wlt_mode.doubleValue() == 2 && column % 2 == 0)
                                return "";

                            Calendar calendar = Calendar.getInstance();
                            calendar.set(Calendar.MONTH, monthNum - 1);
                            SimpleDateFormat dataFormat = new SimpleDateFormat("MMM");
                            return dataFormat.format(calendar.getTime());
                        } else
                            return "" + monthNum;
                    }
                });
    }

    if (wlt_mode.doubleValue() == 3) {
        renderer.setBasePositiveItemLabelPosition(new ItemLabelPosition(ItemLabelAnchor.OUTSIDE12,
                org.jfree.ui.TextAnchor.BOTTOM_CENTER, org.jfree.ui.TextAnchor.BOTTOM_RIGHT, Math.PI / 2));
        renderer.setBaseNegativeItemLabelPosition(new ItemLabelPosition(ItemLabelAnchor.OUTSIDE6,
                org.jfree.ui.TextAnchor.TOP_CENTER, org.jfree.ui.TextAnchor.HALF_ASCENT_LEFT, Math.PI / 2));

    } else if (wlt_mode.doubleValue() == 4 || wlt_mode.doubleValue() == 5) {
        renderer.setBasePositiveItemLabelPosition(new ItemLabelPosition(ItemLabelAnchor.OUTSIDE12,
                org.jfree.ui.TextAnchor.BOTTOM_CENTER, org.jfree.ui.TextAnchor.BOTTOM_RIGHT, Math.PI / 4));
        renderer.setBaseNegativeItemLabelPosition(new ItemLabelPosition(ItemLabelAnchor.OUTSIDE6,
                org.jfree.ui.TextAnchor.TOP_CENTER, org.jfree.ui.TextAnchor.HALF_ASCENT_LEFT, Math.PI / 4));
    }

    if (legend == true) {
        LegendItemCollection collection = createThresholdLegend(plot);
        plot.setFixedLegendItems(collection);
    }

    if (maxBarWidth != null) {
        renderer.setMaximumBarWidth(maxBarWidth);
    }
    //renderer.setSeriesPaint(0, Color.BLUE); 
    plot.setRenderer(renderer);

    logger.debug("OUT");
    if (mainThreshold == null)
        return null;
    return chart;

}

From source file:com.thalesgroup.hudson.plugins.cppcheck.graph.CppcheckGraph.java

/**
 * Creates a Cppcheck trend graph//from w  w  w  .j  a  v  a  2s  .  co  m
 *
 * @return the JFreeChart graph object
 */
protected JFreeChart createGraph() {

    final JFreeChart chart = ChartFactory.createLineChart(null, // chart title
            null, // unused
            yLabel, // range axis label
            categoryDataset, // data
            PlotOrientation.VERTICAL, // orientation
            true, // include legend
            true, // tooltips
            false // urls
    );

    // NOW DO SOME OPTIONAL CUSTOMISATION OF THE CHART...

    final LegendTitle legend = chart.getLegend();
    legend.setPosition(RectangleEdge.RIGHT);

    chart.setBackgroundPaint(Color.white);

    final CategoryPlot plot = chart.getCategoryPlot();

    // plot.setAxisOffset(new Spacer(Spacer.ABSOLUTE, 5.0, 5.0, 5.0, 5.0));
    plot.setBackgroundPaint(Color.WHITE);
    plot.setOutlinePaint(null);
    plot.setRangeGridlinesVisible(true);
    plot.setRangeGridlinePaint(Color.black);

    CategoryAxis domainAxis = new ShiftedCategoryAxis(null);
    plot.setDomainAxis(domainAxis);
    domainAxis.setCategoryLabelPositions(CategoryLabelPositions.UP_90);
    domainAxis.setLowerMargin(0.0);
    domainAxis.setUpperMargin(0.0);
    domainAxis.setCategoryMargin(0.0);

    final NumberAxis rangeAxis = (NumberAxis) plot.getRangeAxis();
    rangeAxis.setStandardTickUnits(NumberAxis.createIntegerTickUnits());
    rangeAxis.setLowerBound(0);
    rangeAxis.setAutoRange(true);

    final LineAndShapeRenderer renderer = (LineAndShapeRenderer) plot.getRenderer();
    renderer.setBaseStroke(new BasicStroke(2.0f));
    applyColorPalette(renderer);

    // crop extra space around the graph
    plot.setInsets(new RectangleInsets(5.0, 0, 0, 5.0));

    return chart;
}

From source file:hudson.plugins.codeviation.MetricsAction.java

private JFreeChart createChart(CategoryDataset dataset, int maxVal) {

    final JFreeChart chart = ChartFactory.createLineChart(null, // chart title
            null, // unused
            "count", // range axis label
            dataset, // data
            PlotOrientation.VERTICAL, // orientation
            true, // include legend
            true, // tooltips
            false // urls
    );/*  w w w.  j a  v a2 s .co m*/

    // NOW DO SOME OPTIONAL CUSTOMISATION OF THE CHART...

    final LegendTitle legend = chart.getLegend();
    legend.setPosition(RectangleEdge.RIGHT);

    chart.setBackgroundPaint(Color.white);

    final CategoryPlot plot = chart.getCategoryPlot();

    // plot.setAxisOffset(new Spacer(Spacer.ABSOLUTE, 5.0, 5.0, 5.0, 5.0));
    plot.setBackgroundPaint(Color.WHITE);
    plot.setOutlinePaint(null);
    plot.setRangeGridlinesVisible(true);
    plot.setRangeGridlinePaint(Color.black);

    CategoryAxis domainAxis = new ShiftedCategoryAxis(null);
    plot.setDomainAxis(domainAxis);
    domainAxis.setCategoryLabelPositions(CategoryLabelPositions.UP_90);
    domainAxis.setLowerMargin(0.0);
    domainAxis.setUpperMargin(0.0);
    domainAxis.setCategoryMargin(0.0);

    final NumberAxis rangeAxis = (NumberAxis) plot.getRangeAxis();
    rangeAxis.setStandardTickUnits(NumberAxis.createIntegerTickUnits());
    rangeAxis.setUpperBound(maxVal);
    rangeAxis.setLowerBound(0);

    final LineAndShapeRenderer renderer = (LineAndShapeRenderer) plot.getRenderer();
    renderer.setStroke(new BasicStroke(4.0f));

    // crop extra space around the graph
    plot.setInsets(new RectangleInsets(5.0, 0, 0, 5.0));

    return chart;
}

From source file:org.javarebel.chart.generator.ChartGenerator.java

protected void configureAxis(CategoryAxis axis, DefaultAxisConfig config) {
    axis.setCategoryLabelPositions(config.getLabelPosition());
    axis.setLabelFont(config.getLabelFont());
    axis.setTickLabelFont(config.getTickLabelFont());
    axis.setLowerMargin(config.getLowerMargin());
    axis.setUpperMargin(config.getUpperMargin());
    axis.setCategoryMargin(config.getCategoryMargin());
}

From source file:org.drools.planner.benchmark.core.statistic.PlannerStatistic.java

private void writeBestScoreSummaryChart() {
    DefaultCategoryDataset dataset = new DefaultCategoryDataset();
    for (SolverBenchmark solverBenchmark : plannerBenchmark.getSolverBenchmarkList()) {
        ScoreDefinition scoreDefinition = solverBenchmark.getSolverConfig().getScoreDirectorFactoryConfig()
                .buildScoreDefinition();
        for (SingleBenchmark singleBenchmark : solverBenchmark.getSingleBenchmarkList()) {
            if (singleBenchmark.isSuccess()) {
                Score score = singleBenchmark.getScore();
                Double scoreGraphValue = scoreDefinition.translateScoreToGraphValue(score);
                String solverLabel = solverBenchmark.getName();
                if (solverBenchmark.isRankingBest()) {
                    solverLabel += " (winner)";
                }//from  w  w  w . ja  va  2 s .c  om
                String planningProblemLabel = singleBenchmark.getProblemBenchmark().getName();
                dataset.addValue(scoreGraphValue, solverLabel, planningProblemLabel);
            }
        }
    }
    CategoryAxis xAxis = new CategoryAxis("Data");
    xAxis.setCategoryMargin(0.40);
    NumberAxis yAxis = new NumberAxis("Score");
    BarRenderer renderer = new BarRenderer();
    ItemLabelPosition positiveItemLabelPosition = new ItemLabelPosition(ItemLabelAnchor.OUTSIDE12,
            TextAnchor.BOTTOM_CENTER);
    renderer.setBasePositiveItemLabelPosition(positiveItemLabelPosition);
    ItemLabelPosition negativeItemLabelPosition = new ItemLabelPosition(ItemLabelAnchor.OUTSIDE6,
            TextAnchor.TOP_CENTER);
    renderer.setBaseNegativeItemLabelPosition(negativeItemLabelPosition);
    renderer.setBaseItemLabelGenerator(new StandardCategoryItemLabelGenerator());
    renderer.setBaseItemLabelsVisible(true);
    CategoryPlot plot = new CategoryPlot(dataset, xAxis, yAxis, renderer);
    plot.setOrientation(PlotOrientation.VERTICAL);
    JFreeChart chart = new JFreeChart("Best score summary (higher score is better)",
            JFreeChart.DEFAULT_TITLE_FONT, plot, true);
    BufferedImage chartImage = chart.createBufferedImage(1024, 768);
    bestScoreSummaryFile = new File(plannerBenchmark.getBenchmarkReportDirectory(), "bestScoreSummary.png");
    OutputStream out = null;
    try {
        out = new FileOutputStream(bestScoreSummaryFile);
        ImageIO.write(chartImage, "png", out);
    } catch (IOException e) {
        throw new IllegalArgumentException("Problem writing bestScoreSummaryFile: " + bestScoreSummaryFile, e);
    } finally {
        IOUtils.closeQuietly(out);
    }
}

From source file:org.drools.planner.benchmark.core.statistic.PlannerStatistic.java

private void writeWinningScoreDifferenceSummaryChart() {
    DefaultCategoryDataset dataset = new DefaultCategoryDataset();
    for (SolverBenchmark solverBenchmark : plannerBenchmark.getSolverBenchmarkList()) {
        ScoreDefinition scoreDefinition = solverBenchmark.getSolverConfig().getScoreDirectorFactoryConfig()
                .buildScoreDefinition();
        for (SingleBenchmark singleBenchmark : solverBenchmark.getSingleBenchmarkList()) {
            if (singleBenchmark.isSuccess()) {
                Score score = singleBenchmark.getWinningScoreDifference();
                Double scoreGraphValue = scoreDefinition.translateScoreToGraphValue(score);
                String solverLabel = solverBenchmark.getName();
                if (solverBenchmark.isRankingBest()) {
                    solverLabel += " (winner)";
                }// w w w  .  j a va 2  s  .c o  m
                String planningProblemLabel = singleBenchmark.getProblemBenchmark().getName();
                dataset.addValue(scoreGraphValue, solverLabel, planningProblemLabel);
            }
        }
    }
    CategoryAxis xAxis = new CategoryAxis("Data");
    xAxis.setCategoryMargin(0.40);
    NumberAxis yAxis = new NumberAxis("Winning score difference");
    BarRenderer renderer = new BarRenderer();
    ItemLabelPosition positiveItemLabelPosition = new ItemLabelPosition(ItemLabelAnchor.OUTSIDE12,
            TextAnchor.BOTTOM_CENTER);
    renderer.setBasePositiveItemLabelPosition(positiveItemLabelPosition);
    ItemLabelPosition negativeItemLabelPosition = new ItemLabelPosition(ItemLabelAnchor.OUTSIDE6,
            TextAnchor.TOP_CENTER);
    renderer.setBaseNegativeItemLabelPosition(negativeItemLabelPosition);
    renderer.setBaseItemLabelGenerator(new StandardCategoryItemLabelGenerator());
    renderer.setBaseItemLabelsVisible(true);
    CategoryPlot plot = new CategoryPlot(dataset, xAxis, yAxis, renderer);
    plot.setOrientation(PlotOrientation.VERTICAL);
    JFreeChart chart = new JFreeChart("Winning score difference summary (higher is better)",
            JFreeChart.DEFAULT_TITLE_FONT, plot, true);
    BufferedImage chartImage = chart.createBufferedImage(1024, 768);
    winningScoreDifferenceSummaryFile = new File(plannerBenchmark.getBenchmarkReportDirectory(),
            "winningScoreDifferenceSummary.png");
    OutputStream out = null;
    try {
        out = new FileOutputStream(winningScoreDifferenceSummaryFile);
        ImageIO.write(chartImage, "png", out);
    } catch (IOException e) {
        throw new IllegalArgumentException(
                "Problem writing winningScoreDifferenceSummaryFile: " + winningScoreDifferenceSummaryFile, e);
    } finally {
        IOUtils.closeQuietly(out);
    }
}