Example usage for java.awt GradientPaint GradientPaint

List of usage examples for java.awt GradientPaint GradientPaint

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Introduction

In this page you can find the example usage for java.awt GradientPaint GradientPaint.

Prototype

public GradientPaint(float x1, float y1, Color color1, float x2, float y2, Color color2)

Source Link

Document

Constructs a simple acyclic GradientPaint object.

Usage

From source file:org.hxzon.demo.jfreechart.CategoryDatasetDemo.java

private static JFreeChart createBarChart(CategoryDataset dataset) {

    JFreeChart chart = ChartFactory.createBarChart("Bar Chart Demo 1", // chart title
            "Category", // domain axis label
            "Value", // range axis label
            dataset, // data
            PlotOrientation.HORIZONTAL, // orientation
            true, // include legend
            true, // tooltips?
            false // URLs?
    );//from w  w  w.j a va 2s.  c  om

    chart.setBackgroundPaint(Color.white);

    CategoryPlot plot = (CategoryPlot) chart.getPlot();

    // set the range axis to display integers only...
    NumberAxis rangeAxis = (NumberAxis) plot.getRangeAxis();
    rangeAxis.setStandardTickUnits(NumberAxis.createIntegerTickUnits());

    // disable bar outlines...
    BarRenderer renderer = (BarRenderer) plot.getRenderer();
    renderer.setDrawBarOutline(false);

    // set up gradient paints for series...
    GradientPaint gp0 = new GradientPaint(0.0f, 0.0f, Color.blue, 0.0f, 0.0f, new Color(0, 0, 64));
    GradientPaint gp1 = new GradientPaint(0.0f, 0.0f, Color.green, 0.0f, 0.0f, new Color(0, 64, 0));
    GradientPaint gp2 = new GradientPaint(0.0f, 0.0f, Color.red, 0.0f, 0.0f, new Color(64, 0, 0));
    renderer.setSeriesPaint(0, gp0);
    renderer.setSeriesPaint(1, gp1);
    renderer.setSeriesPaint(2, gp2);

    CategoryAxis domainAxis = plot.getDomainAxis();
    domainAxis.setCategoryLabelPositions(CategoryLabelPositions.createUpRotationLabelPositions(Math.PI / 6.0));

    return chart;

}

From source file:edu.ucla.stat.SOCR.chart.demo.LayeredBarChartDemo1.java

/**
 * Creates a sample chart./*from   w  w  w.j  a  v a2 s .com*/
 * 
 * @param dataset  the dataset.
 * 
 * @return The chart.
 */
protected JFreeChart createChart(CategoryDataset dataset) {

    // create the chart...
    JFreeChart chart = ChartFactory.createBarChart(chartTitle, // chart title
            domainLabel, // domain axis label
            rangeLabel, // range axis label
            dataset, // data
            PlotOrientation.VERTICAL, // orientation
            !legendPanelOn, // include legend
            true, // tooltips?
            false // URLs?
    );

    chart.setBackgroundPaint(Color.white);

    // get a reference to the plot for further customisation...
    CategoryPlot plot = chart.getCategoryPlot();
    plot.setBackgroundPaint(Color.lightGray);
    plot.setDomainGridlinePaint(Color.white);
    plot.setDomainGridlinesVisible(true);
    plot.setRangeGridlinePaint(Color.white);

    // set the range axis to display integers only...
    NumberAxis rangeAxis = (NumberAxis) plot.getRangeAxis();
    rangeAxis.setStandardTickUnits(NumberAxis.createIntegerTickUnits());

    // disable bar outlines...
    LayeredBarRenderer renderer = new LayeredBarRenderer();
    renderer.setDrawBarOutline(false);
    plot.setRenderer(renderer);

    // for this renderer, we need to draw the first series last...
    plot.setRowRenderingOrder(SortOrder.DESCENDING);

    // set up gradient paints for series...
    GradientPaint gp0 = new GradientPaint(0.0f, 0.0f, Color.blue, 0.0f, 0.0f, new Color(0, 0, 64));
    GradientPaint gp1 = new GradientPaint(0.0f, 0.0f, Color.green, 0.0f, 0.0f, new Color(0, 64, 0));
    GradientPaint gp2 = new GradientPaint(0.0f, 0.0f, Color.red, 0.0f, 0.0f, new Color(64, 0, 0));
    renderer.setSeriesPaint(0, gp0);
    renderer.setSeriesPaint(1, gp1);
    renderer.setSeriesPaint(2, gp2);
    renderer.setLegendItemLabelGenerator(new SOCRCategorySeriesLabelGenerator());
    setCategorySummary(dataset);
    return chart;

}

From source file:edu.ucla.stat.SOCR.chart.demo.LayeredBarChartDemo2.java

/**
 * Creates a sample chart.//from ww w .  ja  va  2 s . c  o m
 * 
 * @param dataset  the dataset.
 * 
 * @return The chart.
 */
protected JFreeChart createChart(CategoryDataset dataset) {

    // create the chart...
    JFreeChart chart = ChartFactory.createBarChart(chartTitle, // chart title
            domainLabel, // domain axis label
            rangeLabel, // range axis label
            dataset, // data
            PlotOrientation.HORIZONTAL, // orientation
            !legendPanelOn, // include legend
            true, // tooltips?
            false // URLs?
    );

    chart.setBackgroundPaint(Color.white);

    // get a reference to the plot for further customisation...
    CategoryPlot plot = chart.getCategoryPlot();
    plot.setBackgroundPaint(Color.lightGray);
    plot.setDomainGridlinePaint(Color.white);
    plot.setDomainGridlinesVisible(true);
    plot.setRangeGridlinePaint(Color.white);

    // set the range axis to display integers only...
    NumberAxis rangeAxis = (NumberAxis) plot.getRangeAxis();
    rangeAxis.setStandardTickUnits(NumberAxis.createIntegerTickUnits());

    // disable bar outlines...
    LayeredBarRenderer renderer = new LayeredBarRenderer();
    renderer.setDrawBarOutline(false);
    plot.setRenderer(renderer);

    // for this renderer, we need to draw the first series last...
    plot.setRowRenderingOrder(SortOrder.DESCENDING);

    // set up gradient paints for series...
    GradientPaint gp0 = new GradientPaint(0.0f, 0.0f, Color.blue, 0.0f, 0.0f, new Color(0, 0, 64));
    GradientPaint gp1 = new GradientPaint(0.0f, 0.0f, Color.green, 0.0f, 0.0f, new Color(0, 64, 0));
    GradientPaint gp2 = new GradientPaint(0.0f, 0.0f, Color.red, 0.0f, 0.0f, new Color(64, 0, 0));
    renderer.setSeriesPaint(0, gp0);
    renderer.setSeriesPaint(1, gp1);
    renderer.setSeriesPaint(2, gp2);
    renderer.setLegendItemLabelGenerator(new SOCRCategorySeriesLabelGenerator());
    setCategorySummary(dataset);
    return chart;

}

From source file:Client.Gui.BarChart.java

/**
* Creates a sample chart./*w  w w  .j ava 2 s  .  co m*/
* 
* @param dataset  the dataset.
* 
* @return The chart.
*/
private JFreeChart createChart(final CategoryDataset dataset) {

    // create the chart...
    final JFreeChart chart = ChartFactory.createBarChart("Distribution of Trainging", // chart title
            "", // domain axis label
            "", // range axis label
            dataset, // data
            PlotOrientation.VERTICAL, // orientation
            true, // include legend
            true, // tooltips?
            false // URLs?
    );

    // set the background color for the chart...
    chart.setBackgroundPaint(Color.white);

    // get a reference to the plot for further customisation...
    final CategoryPlot plot = chart.getCategoryPlot();
    plot.setBackgroundPaint(Color.lightGray);
    plot.setDomainGridlinePaint(Color.white);
    plot.setRangeGridlinePaint(Color.white);

    // set the range axis to display integers only...
    final NumberAxis rangeAxis = (NumberAxis) plot.getRangeAxis();
    rangeAxis.setStandardTickUnits(NumberAxis.createIntegerTickUnits());

    // disable bar outlines...
    final BarRenderer renderer = (BarRenderer) plot.getRenderer();
    renderer.setDrawBarOutline(false);

    // set up gradient paints for series...
    final GradientPaint gp0 = new GradientPaint(0.0f, 0.0f, Color.blue, 0.0f, 0.0f, Color.lightGray);
    final GradientPaint gp1 = new GradientPaint(0.0f, 0.0f, Color.green, 0.0f, 0.0f, Color.lightGray);
    final GradientPaint gp2 = new GradientPaint(0.0f, 0.0f, Color.red, 0.0f, 0.0f, Color.lightGray);
    final GradientPaint gp3 = new GradientPaint(0.0f, 0.0f, Color.magenta, 0.0f, 0.0f, Color.lightGray);
    renderer.setSeriesPaint(0, gp0);
    renderer.setSeriesPaint(1, gp1);
    renderer.setSeriesPaint(2, gp2);
    renderer.setSeriesPaint(3, gp3);
    final CategoryAxis domainAxis = plot.getDomainAxis();
    domainAxis.setCategoryLabelPositions(CategoryLabelPositions.createUpRotationLabelPositions(Math.PI / 6.0));

    return chart;

}

From source file:org.objectweb.proactive.extensions.timitspmd.util.charts.MatrixChart.java

private void buildMainChart(String title, String subTitle, String xAxisLabel, String yAxisLabel,
        String fileName) {/*from   w ww  .j  av  a 2 s. com*/
    final MatrixSeriesCollection dataset = new MatrixSeriesCollection(this.createMatrixDataSet());

    final JFreeChart chart = ChartFactory.createBubbleChart(title, xAxisLabel, yAxisLabel, dataset,
            PlotOrientation.VERTICAL, true, true, false);

    chart.addSubtitle(new TextTitle(subTitle));
    chart.setBackgroundPaint(new GradientPaint(0, 0, Color.white, 0, 1000, Color.WHITE));
    chart.removeLegend();

    // Perform customizations starts here ...
    final XYPlot plot1 = chart.getXYPlot();

    plot1.setDomainGridlinesVisible(false);
    plot1.setRangeGridlinesVisible(false);
    plot1.setForegroundAlpha(0.5f);
    plot1.setDomainAxis(new CustomAxis(plot1.getDomainAxis().getLabel()));
    plot1.setRangeAxis(new CustomAxis(plot1.getRangeAxis().getLabel()));

    // Custumize the domain axis ( y )
    final NumberAxis domainAxis = (NumberAxis) plot1.getDomainAxis();
    domainAxis.setStandardTickUnits(NumberAxis.createIntegerTickUnits());
    domainAxis.setRange(-1, this.array.length);

    // Custumize the range axis ( y )
    final NumberAxis rangeAxis = (NumberAxis) plot1.getRangeAxis();
    rangeAxis.setStandardTickUnits(NumberAxis.createIntegerTickUnits());
    rangeAxis.setRange(-1, this.array.length);

    // Create custom renderer
    StandardXYItemRenderer ren = new CustomRenderer(false);
    ren.setSeriesItemLabelPaint(0, Color.BLACK);
    plot1.setRenderer(ren);
    this.mainChart = chart;
}

From source file:edu.ucla.stat.SOCR.chart.demo.BarChartDemo1.java

/**
 * Creates a sample chart.//from  w ww .j av  a 2  s  . com
 * 
 * @param dataset  the dataset.
 * 
 * @return The chart.
 */
protected JFreeChart createChart(CategoryDataset dataset) {
    domainLabel = "Category";
    rangeLabel = "Value";
    // create the chart...
    JFreeChart chart = ChartFactory.createBarChart(chartTitle, // chart title
            domainLabel, // domain axis label
            rangeLabel, // range axis label
            dataset, // data
            PlotOrientation.VERTICAL, // orientation
            !legendPanelOn, // include legend
            true, // tooltips?
            false // URLs?
    );

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

    // set the background color for the chart...
    chart.setBackgroundPaint(Color.white);

    // get a reference to the plot for further customisation...
    CategoryPlot plot = chart.getCategoryPlot();
    plot.setBackgroundPaint(Color.lightGray);
    plot.setDomainGridlinePaint(Color.white);
    plot.setDomainGridlinesVisible(true);
    plot.setRangeGridlinePaint(Color.white);

    // set the range axis to display integers only...
    NumberAxis rangeAxis = (NumberAxis) plot.getRangeAxis();
    rangeAxis.setStandardTickUnits(NumberAxis.createIntegerTickUnits());

    // disable bar outlines...
    BarRenderer renderer = (BarRenderer) plot.getRenderer();
    renderer.setDrawBarOutline(false);

    // set up gradient paints for series...
    GradientPaint gp0 = new GradientPaint(0.0f, 0.0f, Color.blue, 0.0f, 0.0f, new Color(0, 0, 64));
    GradientPaint gp1 = new GradientPaint(0.0f, 0.0f, Color.green, 0.0f, 0.0f, new Color(0, 64, 0));
    GradientPaint gp2 = new GradientPaint(0.0f, 0.0f, Color.red, 0.0f, 0.0f, new Color(64, 0, 0));
    renderer.setSeriesPaint(0, gp0);
    renderer.setSeriesPaint(1, gp1);
    renderer.setSeriesPaint(2, gp2);
    renderer.setLegendItemLabelGenerator(new SOCRCategorySeriesLabelGenerator());

    CategoryAxis domainAxis = plot.getDomainAxis();
    domainAxis.setCategoryLabelPositions(CategoryLabelPositions.createUpRotationLabelPositions(Math.PI / 6.0));
    // OPTIONAL CUSTOMISATION COMPLETED.

    /*Summary s = new Summary(dataset);
            
            
            
      LegendTitle legend = new LegendTitle(chart.getPlot());
              
      BlockContainer wrapper = new BlockContainer(new BorderArrangement());
      wrapper.setBorder(new BlockBorder(1.0, 1.0, 1.0, 1.0));
            
    LegendItemSource[] legendSource= legend.getSources();
    LegendItemCollection old_legendItems = legendSource[0].getLegendItems();
    LegendItemCollection new_legendItems = new LegendItemCollection();
            
    int legendCount  = old_legendItems.getItemCount();
    for (int i=0; i<legendCount; i++){
       LegendItem old_legendItem = old_legendItems.get(i);
            
       String legendLabel = old_legendItem.getLabel();
       System.out.println("legendLabel="+old_legendLabel);
       LegendItem new_legendItem = new LegendItem(
                                  old_legendItem.getLabel()+s.getSummary(i),
                                  old_legendItem.getDescription(),
                                  old_legendItem.getToolTipText(),
                                  old_legendItem.getURLText(),
                                  old_legendItem.isShapeVisible(),
                                  old_legendItem.getShape(),
                                  old_legendItem.isShapeFilled(),
                                  old_legendItem.getFillPaint(),
                                  old_legendItem.isShapeOutlineVisible(),
                                  old_legendItem.getOutlinePaint(),
                                  old_legendItem.getOutlineStroke(),
                                  old_legendItem.isLineVisible(),
                                  old_legendItem.getLine(),
                                  old_legendItem.getLineStroke(),
                                  old_legendItem.getlinePaint()
                                  );
       new_legendItems.add(new_legendItem);
       }
              
            
      // *** this is important - you need to add the item container to
      // the wrapper, otherwise the legend items won't be displayed when
      // the wrapper is drawn... ***
      BlockContainer items = legend.getItemContainer();
      items.setPadding(2, 10, 5, 2);
      wrapper.add(items);
      legend.setWrapper(wrapper);
              
      legend.setPosition(RectangleEdge.BOTTOM);
      legend.setHorizontalAlignment(HorizontalAlignment.LEFT);
      chart.addSubtitle(legend);*/

    setCategorySummary(dataset);
    return chart;

}

From source file:fitmon.WorkoutChart.java

/**
 * Creates a sample chart.//from  w w  w .j  a  v  a 2  s. co m
 * 
 * @param dataset  the dataset.
 * 
 * @return The chart.
 */
public JFreeChart createChart(CategoryDataset dataset) {

    // create the chart...
    JFreeChart chart = ChartFactory.createBarChart("weekly workout", // chart title
            "Date", // domain axis label
            "Performance", // range axis label
            dataset, // data
            PlotOrientation.VERTICAL, // orientation
            true, // include legend
            true, // tooltips?
            false // URLs?
    );

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

    // set the background color for the chart...
    chart.setBackgroundPaint(Color.white);

    // get a reference to the plot for further customisation...
    CategoryPlot plot = chart.getCategoryPlot();
    plot.setBackgroundPaint(Color.lightGray);
    plot.setDomainGridlinePaint(Color.white);
    plot.setRangeGridlinePaint(Color.white);

    // set the range axis to display integers only...
    NumberAxis rangeAxis = (NumberAxis) plot.getRangeAxis();
    rangeAxis.setRange(25, 200);

    rangeAxis.setStandardTickUnits(NumberAxis.createIntegerTickUnits());

    // disable bar outlines...
    BarRenderer renderer = (BarRenderer) plot.getRenderer();
    renderer.setDrawBarOutline(false);

    // set up gradient paints for series...
    GradientPaint gp0 = new GradientPaint(0.0f, 0.0f, Color.ORANGE, 0.0f, 0.0f, Color.lightGray);
    GradientPaint gp1 = new GradientPaint(0.0f, 0.0f, Color.PINK, 0.0f, 0.0f, Color.lightGray);
    GradientPaint gp2 = new GradientPaint(0.0f, 0.0f, Color.red, 0.0f, 0.0f, Color.lightGray);
    renderer.setSeriesPaint(0, gp0);
    renderer.setSeriesPaint(1, gp1);
    renderer.setSeriesPaint(2, gp2);

    CategoryAxis domainAxis = plot.getDomainAxis();
    domainAxis.setCategoryLabelPositions(CategoryLabelPositions.createUpRotationLabelPositions(Math.PI / 6.0));
    // OPTIONAL CUSTOMISATION COMPLETED.

    return chart;

}

From source file:reports.util.BarChart2Scriptlet.java

/**
 *
 *///  ww w  .j a v  a 2 s. c  o m
public void afterReportInit() throws JRScriptletException {

    JFreeChart jfreechart = ChartFactory.createBarChart("Bar Chart Demo", // chart title
            "States", // X Label
            "Sell Amount", // Y Label
            dataset, // data
            PlotOrientation.VERTICAL, // orientation
            true, // include legend
            true, // tooltips?
            false // URLs?
    );

    jfreechart.setBackgroundPaint(Color.white);
    CategoryPlot categoryplot = jfreechart.getCategoryPlot();
    categoryplot.setBackgroundPaint(Color.lightGray);
    categoryplot.setDomainGridlinePaint(Color.white);
    categoryplot.setRangeGridlinePaint(Color.white);

    LegendTitle legendtitle = (LegendTitle) jfreechart.getSubtitle(0);
    legendtitle.setPosition(RectangleEdge.RIGHT);
    legendtitle.setMargin(new RectangleInsets(UnitType.ABSOLUTE, 0.0D, 4D, 0.0D, 4D));

    IntervalMarker intervalmarker = new IntervalMarker(200D, 250D);
    intervalmarker.setLabel("Target Range");
    intervalmarker.setLabelFont(new Font("SansSerif", 2, 11));
    intervalmarker.setLabelAnchor(RectangleAnchor.LEFT);
    intervalmarker.setLabelTextAnchor(TextAnchor.CENTER_LEFT);
    intervalmarker.setPaint(new Color(222, 222, 255, 128));
    categoryplot.addRangeMarker(intervalmarker, Layer.BACKGROUND);

    NumberAxis numberaxis = (NumberAxis) categoryplot.getRangeAxis();
    numberaxis.setStandardTickUnits(NumberAxis.createIntegerTickUnits());
    BarRenderer barrenderer = (BarRenderer) categoryplot.getRenderer();
    barrenderer.setDrawBarOutline(false);
    barrenderer.setItemMargin(0.10000000000000001D);

    GradientPaint gradientpaint = new GradientPaint(0.0F, 0.0F, Color.blue, 0.0F, 0.0F, new Color(0, 0, 64));
    GradientPaint gradientpaint1 = new GradientPaint(0.0F, 0.0F, Color.green, 0.0F, 0.0F, new Color(0, 64, 0));
    GradientPaint gradientpaint2 = new GradientPaint(0.0F, 0.0F, Color.red, 0.0F, 0.0F, new Color(64, 0, 0));

    barrenderer.setSeriesPaint(0, gradientpaint);
    barrenderer.setSeriesPaint(1, gradientpaint1);
    barrenderer.setSeriesPaint(2, gradientpaint2);

    barrenderer.setItemLabelGenerator(new LabelGenerator());
    barrenderer.setItemLabelsVisible(true);
    //ItemLabelPosition itemlabelposition = new ItemLabelPosition(ItemLabelAnchor.INSIDE12, TextAnchor.CENTER_RIGHT, TextAnchor.CENTER_RIGHT, -1.5707963267948966D);
    //barrenderer.setPositiveItemLabelPosition(itemlabelposition);

    ItemLabelPosition itemlabelposition1 = new ItemLabelPosition(ItemLabelAnchor.OUTSIDE12,
            TextAnchor.CENTER_LEFT, TextAnchor.CENTER_LEFT, -1.5707963267948966D);
    barrenderer.setPositiveItemLabelPositionFallback(itemlabelposition1);

    CategoryAxis categoryaxis = categoryplot.getDomainAxis();
    categoryaxis.setCategoryLabelPositions(CategoryLabelPositions.UP_45);
    /*   */
    this.setVariableValue("Chart", new JCommonDrawableRenderer(jfreechart));
}

From source file:org.amanzi.splash.chart.Charts.java

/**
 * Creates a bar chart/*from   w ww .  jav a 2 s. c o  m*/
 *
 * @param reportChart chart model
 * @return a JFreeChart
 */
public static JFreeChart createBarChart(Chart reportChart) {

    // create the chart...
    JFreeChart chart = ChartFactory.createBarChart(reportChart.getTitle(), // chart title
            reportChart.getDomainAxisLabel(), // domain axis label
            reportChart.getRangeAxisLabel(), // range axis label
            ((CategoryPlot) reportChart.getPlot()).getDataset(), // data
            reportChart.getOrientation(), // orientation
            true, // include legend
            true, // tooltips?
            false // URLs?
    );

    // set the background color for the chart...
    chart.setBackgroundPaint(Color.white);

    // get a reference to the plot for further customisation...
    CategoryPlot plot = (CategoryPlot) chart.getPlot();

    // set the range axis to display integers only...
    NumberAxis rangeAxis = (NumberAxis) plot.getRangeAxis();
    rangeAxis.setStandardTickUnits(NumberAxis.createIntegerTickUnits());

    // disable bar outlines...
    BarRenderer renderer = (BarRenderer) plot.getRenderer();
    renderer.setDrawBarOutline(false);

    // set up gradient paints for series...
    GradientPaint gp0 = new GradientPaint(0.0f, 0.0f, Color.blue, 0.0f, 0.0f, new Color(0, 0, 64));
    renderer.setSeriesPaint(0, gp0);

    CategoryAxis domainAxis = plot.getDomainAxis();
    domainAxis.setCategoryLabelPositions(CategoryLabelPositions.createUpRotationLabelPositions(Math.PI / 6.0));
    return chart;
}

From source file:BarChartDemo.java

/**
 * Creates a sample chart./*from w w  w .j  a  v  a 2 s .co  m*/
 * 
 * @param dataset  the dataset.
 * 
 * @return The chart.
 */
private JFreeChart createChart(final CategoryDataset dataset) {

    // create the chart...
    final JFreeChart chart = ChartFactory.createBarChart("Bar Chart Demo", // chart title
            "Category", // domain axis label
            "Value", // range axis label
            dataset, // data
            PlotOrientation.VERTICAL, // orientation
            true, // include legend
            true, // tooltips?
            false // URLs?
    );

    // set the background color for the chart...
    chart.setBackgroundPaint(Color.white);

    // get a reference to the plot for further customization...
    final CategoryPlot plot = chart.getCategoryPlot();
    plot.setBackgroundPaint(Color.lightGray);
    plot.setDomainGridlinePaint(Color.white);
    plot.setRangeGridlinePaint(Color.white);

    // set the range axis to display integers only...
    final NumberAxis rangeAxis = (NumberAxis) plot.getRangeAxis();
    rangeAxis.setStandardTickUnits(NumberAxis.createIntegerTickUnits());

    // disable bar outlines...
    final BarRenderer renderer = (BarRenderer) plot.getRenderer();
    renderer.setDrawBarOutline(false);

    // set up gradient paints for series...
    final GradientPaint gp0 = new GradientPaint(0.0f, 0.0f, Color.blue, 0.0f, 0.0f, Color.lightGray);
    final GradientPaint gp1 = new GradientPaint(0.0f, 0.0f, Color.green, 0.0f, 0.0f, Color.lightGray);
    final GradientPaint gp2 = new GradientPaint(0.0f, 0.0f, Color.red, 0.0f, 0.0f, Color.lightGray);
    renderer.setSeriesPaint(0, gp0);
    renderer.setSeriesPaint(1, gp1);
    renderer.setSeriesPaint(2, gp2);

    final CategoryAxis domainAxis = plot.getDomainAxis();
    domainAxis.setCategoryLabelPositions(CategoryLabelPositions.createUpRotationLabelPositions(Math.PI / 6.0));

    return chart;

}