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

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

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  6. setUpperMargin

Introduction

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

Prototype

public void setUpperMargin(double margin)

Source Link

Document

Sets the upper margin for the axis and sends an AxisChangeEvent to all registered listeners.

Usage

From source file:presentation.webgui.vitroappservlet.StyleCreator.java

private static JFreeChart createChart(CategoryDataset dataset, Vector<String> givCategColors,
        Model3dStylesEntry givStyleEntry) {
    String capSimpleName = givStyleEntry.getCorrCapability();
    capSimpleName = capSimpleName.replaceAll(Capability.dcaPrefix, "");
    JFreeChart chart = ChartFactory.createBarChart("Style Legend for " + capSimpleName, // chart title
            null, // domain axis label
            null, // range axis label
            dataset, // data
            PlotOrientation.HORIZONTAL, false, // include legend
            true, false);//from  ww  w  .ja va  2s  .  c om

    chart.getTitle().setFont(new Font("SansSerif", Font.BOLD, 14));
    // NOW DO SOME OPTIONAL CUSTOMISATION OF THE CHART...
    chart.setBackgroundPaint(Color.white); // seen
    CategoryPlot plot = chart.getCategoryPlot();
    chart.setPadding(new RectangleInsets(0, 0, 0, 0)); //new

    plot.setNoDataMessage("NO DATA!");

    Paint[] tmpPaintCategories = { Color.white };
    if (givCategColors.size() > 0) {
        tmpPaintCategories = new Paint[givCategColors.size()];
        for (int i = 0; i < givCategColors.size(); i++) {
            tmpPaintCategories[i] = Color.decode(givCategColors.elementAt(i));
        }
    }

    CategoryItemRenderer renderer = new CustomRenderer(tmpPaintCategories);

    renderer.setSeriesPaint(0, new Color(255, 204, 51)); //new

    plot.setRenderer(renderer);

    plot.setAxisOffset(new RectangleInsets(0, 0, 0, 0)); //new
    plot.setForegroundAlpha(1f); //new
    plot.setBackgroundAlpha(1f); //new
    plot.setInsets(new RectangleInsets(5, 0, 5, 0)); //new was 5,0,5,0
    plot.setRangeGridlinesVisible(false); //new was true
    plot.setBackgroundPaint(Color.white);//new: was (Color.lightGray);
    plot.setOutlinePaint(Color.white);

    //plot.setOrientation(PlotOrientation.HORIZONTAL);

    CategoryAxis domainAxis = plot.getDomainAxis();

    domainAxis.setLowerMargin(0.04);
    domainAxis.setUpperMargin(0.04);
    domainAxis.setVisible(true);
    domainAxis.setLabelAngle(Math.PI / 2);

    NumberAxis rangeAxis = (NumberAxis) plot.getRangeAxis();
    rangeAxis.setRange(0.0, 100.0); // new: was 100
    rangeAxis.setVisible(false);
    // OPTIONAL CUSTOMISATION COMPLETED.
    return chart;
}

From source file:org.tap4j.plugin.util.GraphHelper.java

public static JFreeChart createChart(StaplerRequest req, CategoryDataset dataset) {

    final JFreeChart chart = ChartFactory.createStackedAreaChart("TAP Tests", // chart title
            null, // unused
            "TAP Tests Count", // range axis label
            dataset, // data
            PlotOrientation.VERTICAL, // orientation
            true, // include legend
            true, // tooltips
            false // urls
    );//from w ww .  j  a  v a  2  s  .c  om

    // 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.setBackgroundPaint(Color.WHITE);
    plot.setOutlinePaint(null);
    plot.setForegroundAlpha(0.8f);
    plot.setDomainGridlinesVisible(true);
    plot.setDomainGridlinePaint(Color.white);
    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());

    StackedAreaRenderer ar = new StackedAreaRenderer2() {
        private static final long serialVersionUID = 331915263367089058L;

        @Override
        public String generateURL(CategoryDataset dataset, int row, int column) {
            NumberOnlyBuildLabel label = (NumberOnlyBuildLabel) dataset.getColumnKey(column);
            return label.build.getNumber() + "/" + AbstractTapProjectAction.URL_NAME + "/";
        }

        @Override
        public String generateToolTip(CategoryDataset dataset, int row, int column) {
            NumberOnlyBuildLabel label = (NumberOnlyBuildLabel) dataset.getColumnKey(column);
            TapBuildAction build = label.build.getAction(TapBuildAction.class);
            TapResult report = build.getResult();
            report.tally();

            switch (row) {
            case 0:
                return String.valueOf(report.getFailed()) + " Failure(s)";
            case 1:
                return String.valueOf(report.getPassed()) + " Pass";
            case 2:
                return String.valueOf(report.getSkipped()) + " Skip(s)";
            default:
                return "";
            }
        }

    };

    plot.setRenderer(ar);
    ar.setSeriesPaint(0, ColorPalette.RED); // Failures
    ar.setSeriesPaint(1, ColorPalette.BLUE); // Pass
    ar.setSeriesPaint(2, ColorPalette.YELLOW); // Skips

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

    return chart;
}

From source file:org.tap4j.plugin.util.GraphHelper.java

/**
 * Creates the graph displayed on Method results page to compare execution
 * duration and status of a test method across builds.
 * //w w  w.  jav a2s .  c  o m
 * At max, 9 older builds are displayed.
 * 
 * @param req
 *            request
 * @param dataset
 *            data set to be displayed on the graph
 * @param statusMap
 *            a map with build as key and the test methods execution status
 *            (result) as the value
 * @param methodUrl
 *            URL to get to the method from a build test result page
 * @return the chart
 */
public static JFreeChart createMethodChart(StaplerRequest req, final CategoryDataset dataset,
        final Map<NumberOnlyBuildLabel, String> statusMap, final String methodUrl) {

    final JFreeChart chart = ChartFactory.createBarChart(null, // chart
            // title
            null, // unused
            " Duration (secs)", // range axis label
            dataset, // data
            PlotOrientation.VERTICAL, // orientation
            true, // include legend
            true, // tooltips
            true // urls
    );

    // NOW DO SOME OPTIONAL CUSTOMISATION OF THE CHART...
    chart.setBackgroundPaint(Color.white);
    chart.removeLegend();

    final CategoryPlot plot = chart.getCategoryPlot();
    plot.setBackgroundPaint(Color.WHITE);
    plot.setOutlinePaint(null);
    plot.setForegroundAlpha(0.8f);
    plot.setDomainGridlinesVisible(true);
    plot.setDomainGridlinePaint(Color.white);
    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());

    BarRenderer br = new BarRenderer() {

        private static final long serialVersionUID = 961671076462240008L;
        Map<String, Paint> statusPaintMap = new HashMap<String, Paint>();

        {
            statusPaintMap.put("PASS", ColorPalette.BLUE);
            statusPaintMap.put("SKIP", ColorPalette.YELLOW);
            statusPaintMap.put("FAIL", ColorPalette.RED);
        }

        /**
         * Returns the paint for an item. Overrides the default behavior
         * inherited from AbstractSeriesRenderer.
         * 
         * @param row
         *            the series.
         * @param column
         *            the category.
         * 
         * @return The item color.
         */
        public Paint getItemPaint(final int row, final int column) {
            NumberOnlyBuildLabel label = (NumberOnlyBuildLabel) dataset.getColumnKey(column);
            Paint paint = statusPaintMap.get(statusMap.get(label));
            // when the status of test method is unknown, use gray color
            return paint == null ? Color.gray : paint;
        }
    };

    br.setBaseToolTipGenerator(new CategoryToolTipGenerator() {
        public String generateToolTip(CategoryDataset dataset, int row, int column) {
            NumberOnlyBuildLabel label = (NumberOnlyBuildLabel) dataset.getColumnKey(column);
            if ("UNKNOWN".equals(statusMap.get(label))) {
                return "unknown";
            }
            // values are in seconds
            return dataset.getValue(row, column) + " secs";
        }
    });

    br.setBaseItemURLGenerator(new CategoryURLGenerator() {
        public String generateURL(CategoryDataset dataset, int series, int category) {
            NumberOnlyBuildLabel label = (NumberOnlyBuildLabel) dataset.getColumnKey(category);
            if ("UNKNOWN".equals(statusMap.get(label))) {
                // no link when method result doesn't exist
                return null;
            }
            // return label.build.getUpUrl() + label.build.getNumber() + "/" + PluginImpl.URL + "/" + methodUrl;
            return label.build.getUpUrl() + label.build.getNumber() + "/tap/" + methodUrl;
        }
    });

    br.setItemMargin(0.0);
    br.setMinimumBarLength(5);
    // set the base to be 1/100th of the maximum value displayed in the
    // graph
    br.setBase(br.findRangeBounds(dataset).getUpperBound() / 100);
    plot.setRenderer(br);

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

From source file:hudson.plugins.codecover.portlet.chart.CodeCoverBuilderTrendChart.java

/**
 * Creates a graph for CodeCover Coverage results.
 *
 * @param summaries/*from  w  w  w . j a va 2s .  c om*/
 *          HashMap(key = run date and value = Instrumentation tests
 *          results)
 * @param widthParam
 *          the chart width
 * @param heightParam
 *          the chart height
 * @return Graph (JFreeChart)
 */
private static Graph createTrendChart(final Map<LocalDate, CodeCoverCoverageResultSummary> summaries,
        int widthParam, int heightParam) {

    return new Graph(-1, widthParam, heightParam) {

        @Override
        protected JFreeChart createGraph() {

            // Show empty chart
            if (summaries == null) {
                JFreeChart chart = ChartFactory.createStackedAreaChart(null, Constants.AXIS_LABEL,
                        Constants.AXIS_LABEL_VALUE, null, PlotOrientation.VERTICAL, true, false, false);

                return chart;
            }

            int lineNumber = 0;

            JFreeChart chart = ChartFactory.createLineChart("", Constants.AXIS_LABEL,
                    Constants.AXIS_LABEL_VALUE, buildDataSet(summaries), PlotOrientation.VERTICAL, true, false,
                    false);

            chart.setBackgroundPaint(Color.white);

            CategoryPlot plot = chart.getCategoryPlot();

            // Line thickness
            CategoryItemRenderer renderer = plot.getRenderer();
            BasicStroke stroke = new BasicStroke(Constants.LINE_THICKNESS, BasicStroke.CAP_ROUND,
                    BasicStroke.JOIN_ROUND);
            renderer.setSeriesStroke(lineNumber++, stroke);
            renderer.setSeriesStroke(lineNumber++, stroke);
            renderer.setSeriesStroke(lineNumber++, stroke);
            renderer.setSeriesStroke(lineNumber, stroke);

            plot.setBackgroundPaint(Color.WHITE);
            plot.setOutlinePaint(null);
            plot.setForegroundAlpha(Constants.FOREGROUND_ALPHA);
            plot.setRangeGridlinesVisible(true);
            plot.setRangeGridlinePaint(Color.black);

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

            NumberAxis rangeAxis = (NumberAxis) plot.getRangeAxis();
            rangeAxis.setStandardTickUnits(NumberAxis.createIntegerTickUnits());
            rangeAxis.setUpperBound(Constants.UPPER_BOUND);
            rangeAxis.setLowerBound(Constants.LOWER_BOUND);

            return chart;

        }
    };
}

From source file:hudson.plugins.karma.portlet.chart.KarmaBuilderTrendChart.java

/**
 * Creates a graph for Karma Coverage results.
 *
 * @param summaries/*from  w w w  .  ja va2  s  .  c  o m*/
 *          HashMap(key = run date and value = Instrumentation tests
 *          results)
 * @param widthParam
 *          the chart width
 * @param heightParam
 *          the chart height
 * @return Graph (JFreeChart)
 */
private static Graph createTrendChart(final Map<LocalDate, KarmaCoverageResultSummary> summaries,
        int widthParam, int heightParam) {

    return new Graph(-1, widthParam, heightParam) {

        @Override
        protected JFreeChart createGraph() {

            // Show empty chart
            if (summaries == null) {
                JFreeChart chart = ChartFactory.createStackedAreaChart(null, Constants.AXIS_LABEL,
                        Constants.AXIS_LABEL_VALUE, null, PlotOrientation.VERTICAL, true, false, false);

                return chart;
            }

            int lineNumber = 0;

            JFreeChart chart = ChartFactory.createLineChart("", Constants.AXIS_LABEL,
                    Constants.AXIS_LABEL_VALUE, buildDataSet(summaries), PlotOrientation.VERTICAL, true, false,
                    false);

            chart.setBackgroundPaint(Color.white);

            CategoryPlot plot = chart.getCategoryPlot();

            // Line thickness
            CategoryItemRenderer renderer = plot.getRenderer();
            BasicStroke stroke = new BasicStroke(Constants.LINE_THICKNESS, BasicStroke.CAP_ROUND,
                    BasicStroke.JOIN_ROUND);
            renderer.setSeriesStroke(lineNumber++, stroke);
            renderer.setSeriesStroke(lineNumber++, stroke);
            renderer.setSeriesStroke(lineNumber++, stroke);
            renderer.setSeriesStroke(lineNumber, stroke);

            plot.setBackgroundPaint(Color.WHITE);
            plot.setOutlinePaint(null);
            plot.setForegroundAlpha(Constants.FOREGROUND_ALPHA);
            plot.setRangeGridlinesVisible(true);
            plot.setRangeGridlinePaint(Color.black);

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

            NumberAxis rangeAxis = (NumberAxis) plot.getRangeAxis();
            rangeAxis.setStandardTickUnits(NumberAxis.createIntegerTickUnits());
            rangeAxis.setUpperBound(Constants.UPPER_BOUND);
            rangeAxis.setLowerBound(Constants.LOWER_BOUND);

            return chart;

        }
    };
}

From source file:hudson.plugins.emma.portlet.chart.EmmaBuilderTrendChart.java

/**
 * Creates a graph for Emma Coverage results.
 *
 * @param summaries// ww w. j a  v a2  s  .  co m
 *          HashMap(key = run date and value = Instrumentation tests
 *          results)
 * @param widthParam
 *          the chart width
 * @param heightParam
 *          the chart height
 * @return Graph (JFreeChart)
 */
private static Graph createTrendChart(final Map<LocalDate, EmmaCoverageResultSummary> summaries, int widthParam,
        int heightParam) {

    return new Graph(-1, widthParam, heightParam) {

        @Override
        protected JFreeChart createGraph() {

            // Show empty chart
            if (summaries == null) {
                JFreeChart chart = ChartFactory.createStackedAreaChart(null, Constants.AXIS_LABEL,
                        Constants.AXIS_LABEL_VALUE, null, PlotOrientation.VERTICAL, true, false, false);

                return chart;
            }

            int lineNumber = 0;

            JFreeChart chart = ChartFactory.createLineChart("", Constants.AXIS_LABEL,
                    Constants.AXIS_LABEL_VALUE, buildDataSet(summaries), PlotOrientation.VERTICAL, true, false,
                    false);

            chart.setBackgroundPaint(Color.white);

            CategoryPlot plot = chart.getCategoryPlot();

            // Line thickness
            CategoryItemRenderer renderer = plot.getRenderer();
            BasicStroke stroke = new BasicStroke(Constants.LINE_THICKNESS, BasicStroke.CAP_ROUND,
                    BasicStroke.JOIN_ROUND);
            renderer.setSeriesStroke(lineNumber++, stroke);
            renderer.setSeriesStroke(lineNumber++, stroke);
            renderer.setSeriesStroke(lineNumber++, stroke);
            renderer.setSeriesStroke(lineNumber, stroke);

            plot.setBackgroundPaint(Color.WHITE);
            plot.setOutlinePaint(null);
            plot.setForegroundAlpha(Constants.FOREGROUND_ALPHA);
            plot.setRangeGridlinesVisible(true);
            plot.setRangeGridlinePaint(Color.black);

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

            NumberAxis rangeAxis = (NumberAxis) plot.getRangeAxis();
            rangeAxis.setStandardTickUnits(NumberAxis.createIntegerTickUnits());
            rangeAxis.setUpperBound(Constants.UPPER_BOUND);
            rangeAxis.setLowerBound(Constants.LOWER_BOUND);

            return chart;

        }
    };
}

From source file:hudson.plugins.jacoco.portlet.chart.JacocoBuilderTrendChart.java

/**
 * Creates a graph for JaCoCo Coverage results.
 *
 * @param summaries//from w w w. ja v a 2s  .  co  m
 *          HashMap(key = run date and value = Instrumentation tests
 *          results)
 * @param widthParam
 *          the chart width
 * @param heightParam
 *          the chart height
 * @return Graph (JFreeChart)
 */
private static Graph createTrendChart(final Map<LocalDate, JacocoCoverageResultSummary> summaries,
        int widthParam, int heightParam) {

    return new Graph(-1, widthParam, heightParam) {

        @Override
        protected JFreeChart createGraph() {

            // Show empty chart
            if (summaries == null) {
                JFreeChart chart = ChartFactory.createStackedAreaChart(null, Constants.AXIS_LABEL,
                        Constants.AXIS_LABEL_VALUE, null, PlotOrientation.VERTICAL, true, false, false);

                return chart;
            }

            int lineNumber = 0;

            JFreeChart chart = ChartFactory.createLineChart("", Constants.AXIS_LABEL,
                    Constants.AXIS_LABEL_VALUE, buildDataSet(summaries), PlotOrientation.VERTICAL, true, false,
                    false);

            chart.setBackgroundPaint(Color.white);

            CategoryPlot plot = chart.getCategoryPlot();

            // Line thickness
            CategoryItemRenderer renderer = plot.getRenderer();
            BasicStroke stroke = new BasicStroke(Constants.LINE_THICKNESS, BasicStroke.CAP_ROUND,
                    BasicStroke.JOIN_ROUND);
            renderer.setSeriesStroke(lineNumber++, stroke);
            renderer.setSeriesStroke(lineNumber++, stroke);
            renderer.setSeriesStroke(lineNumber++, stroke);
            renderer.setSeriesStroke(lineNumber, stroke);

            plot.setBackgroundPaint(Color.WHITE);
            plot.setOutlinePaint(null);
            plot.setForegroundAlpha(Constants.FOREGROUND_ALPHA);
            plot.setRangeGridlinesVisible(true);
            plot.setRangeGridlinePaint(Color.black);

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

            NumberAxis rangeAxis = (NumberAxis) plot.getRangeAxis();
            rangeAxis.setStandardTickUnits(NumberAxis.createIntegerTickUnits());
            //rangeAxis.setUpperBound(Constants.UPPER_BOUND);
            rangeAxis.setLowerBound(Constants.LOWER_BOUND);

            return chart;

        }
    };
}

From source file:org.talend.dataprofiler.chart.util.TopChartFactory.java

/**
 * /* w w  w .j a v a 2 s  .  c o  m*/
 * DOC zshen Comment method "createMatchRuleBarChart".
 * 
 * @param title
 * @param dataset
 * @return
 */
public static JFreeChart createMatchRuleBarChart(String categoryAxisLabel, String valueAxisLabel,
        CategoryDataset dataset) {
    ChartFactory.setChartTheme(StandardChartTheme.createLegacyTheme());
    JFreeChart localJFreeChart = ChartFactory.createBarChart(null, categoryAxisLabel, valueAxisLabel, dataset,
            PlotOrientation.VERTICAL, false, true, false);

    localJFreeChart.addSubtitle(new TextTitle(
            Messages.getString("DataChart.title", sumItemCount(dataset), sumGroupCount(dataset)))); //$NON-NLS-1$
    CategoryPlot plot = (CategoryPlot) localJFreeChart.getPlot();
    // get real color list from ChartDecorator.COLOR_LIST dataset.getColumnKeys()
    List<Color> currentColorList = null;
    try {
        currentColorList = getCurrentColorList(dataset.getColumnKeys());
    } catch (NumberFormatException e) {
        log.warn(e, e);
        currentColorList = ChartDecorator.COLOR_LIST;
    }
    BarRenderer barRenderer = new TalendBarRenderer(true, currentColorList);
    barRenderer.setBaseItemLabelGenerator(new StandardCategoryItemLabelGenerator());
    barRenderer.setBaseItemLabelsVisible(true);
    // remove the shadow
    barRenderer.setShadowVisible(Boolean.FALSE);
    plot.setRenderer(barRenderer);

    CategoryAxis localCategoryAxis = plot.getDomainAxis();
    localCategoryAxis.setCategoryMargin(0.25D);
    localCategoryAxis.setUpperMargin(0.02D);
    localCategoryAxis.setLowerMargin(0.02D);

    NumberAxis localNumberAxis = (NumberAxis) plot.getRangeAxis();
    localNumberAxis.setStandardTickUnits(NumberAxis.createIntegerTickUnits());
    localNumberAxis.setUpperMargin(0.1D);
    return localJFreeChart;
}

From source file:org.talend.dataprofiler.chart.ChartDecorator.java

/**
 * DOC bZhou Comment method "decorateCategoryPlot".
 * /* ww w .j  a  v  a 2 s  .  c  om*/
 * @param chart
 */
public static void decorateCategoryPlot(JFreeChart chart, PlotOrientation orientation) {

    CategoryPlot plot = chart.getCategoryPlot();
    CategoryItemRenderer render = plot.getRenderer();
    CategoryAxis domainAxis = plot.getDomainAxis();
    // ADD msjian TDQ-5111 2012-4-9: set something look it well
    domainAxis.setCategoryMargin(0.1);
    domainAxis.setUpperMargin(0.05);
    domainAxis.setLowerMargin(0.05);
    domainAxis.setCategoryLabelPositionOffset(10);
    // TDQ-5111~

    ValueAxis valueAxis = plot.getRangeAxis();

    Font font = new Font("Tahoma", Font.BOLD, BASE_ITEM_LABEL_SIZE);//$NON-NLS-1$

    render.setBaseItemLabelFont(font);
    // MOD zshen 10998: change the font name 2010-01-16
    font = new Font("sans-serif", Font.BOLD, BASE_LABEL_SIZE);//$NON-NLS-1$
    domainAxis.setLabelFont(font);

    font = new Font("sans-serif", Font.BOLD, BASE_LABEL_SIZE);//$NON-NLS-1$
    valueAxis.setLabelFont(font);

    font = new Font("sans-serif", Font.PLAIN, BASE_TICK_LABEL_SIZE);//$NON-NLS-1$
    domainAxis.setTickLabelFont(font);
    valueAxis.setTickLabelFont(font);

    setLegendFont(chart);

    font = new Font("sans-serif", Font.BOLD, BASE_TITLE_LABEL_SIZE);//$NON-NLS-1$
    TextTitle title = chart.getTitle();
    if (title != null) {
        title.setFont(font);
    }

    font = null;

    if (render instanceof BarRenderer) {
        CategoryDataset dataset = chart.getCategoryPlot().getDataset();
        if (dataset != null) {
            int rowCount = dataset.getRowCount();
            List<?> columnKeys = dataset.getColumnKeys();
            if (!isContainCJKCharacter(columnKeys.toArray())) {
                domainAxis.setTickLabelFont(new Font("Tahoma", Font.PLAIN, 10));//$NON-NLS-1$
            }
            ((BarRenderer) render).setItemMargin(-0.40 * rowCount);

            // TDQ-12621 add Tooltip for Lable
            for (Object colKey : columnKeys) {
                domainAxis.addCategoryLabelToolTip(colKey.toString(), colKey.toString());
            }
        }
        domainAxis.setUpperMargin(0.1);
        // TDQ-12621 Only display in 1 line for the label, other chars will be displayed as "..."
        domainAxis.setMaximumCategoryLabelLines(1);

        // ADD msjian TDQ-5111 2012-4-9: set Bar Width and let it look well
        // not do this when the bar is horizontal Orientation
        if (orientation == null) {
            ((BarRenderer) render).setMaximumBarWidth(0.2);
        }
        // TDQ-5111~
    }
    // ~10998
}

From source file:org.jfree.chart.demo.CategoryStepChartDemo1.java

private static JFreeChart createChart(CategoryDataset categorydataset) {
    CategoryStepRenderer categorysteprenderer = new CategoryStepRenderer(true);
    categorysteprenderer.setBaseToolTipGenerator(new StandardCategoryToolTipGenerator());
    CategoryAxis categoryaxis = new CategoryAxis("Category");
    NumberAxis numberaxis = new NumberAxis("Value");
    CategoryPlot categoryplot = new CategoryPlot(categorydataset, categoryaxis, numberaxis,
            categorysteprenderer);/*from   w  ww  .j  a  v  a  2s  . c  o  m*/
    JFreeChart jfreechart = new JFreeChart("Category Step Chart", categoryplot);
    jfreechart.setBackgroundPaint(Color.white);
    categoryplot.setAxisOffset(new RectangleInsets(5D, 5D, 5D, 5D));
    categoryplot.setBackgroundPaint(Color.lightGray);
    categoryplot.setDomainGridlinesVisible(true);
    categoryplot.setDomainGridlinePaint(Color.white);
    categoryplot.setRangeGridlinesVisible(true);
    categoryplot.setRangeGridlinePaint(Color.white);
    categoryaxis.setCategoryLabelPositions(CategoryLabelPositions.UP_45);
    categoryaxis.setLowerMargin(0.0D);
    categoryaxis.setUpperMargin(0.0D);
    categoryaxis.addCategoryLabelToolTip("Type 1", "The first type.");
    categoryaxis.addCategoryLabelToolTip("Type 2", "The second type.");
    categoryaxis.addCategoryLabelToolTip("Type 3", "The third type.");
    numberaxis.setStandardTickUnits(NumberAxis.createIntegerTickUnits());
    numberaxis.setLabelAngle(0.0D);
    return jfreechart;
}