Java Code Examples for org.jfree.chart.ChartFactory#createBarChart()

The following examples show how to use org.jfree.chart.ChartFactory#createBarChart() . You can vote up the ones you like or vote down the ones you don't like, and go to the original project or source file by following the links above each example. You may check out the related API usage on the sidebar.

Example 1

Source File: CategoryPlotTest.java From SIMVA-SoS with Apache License 2.0

6 votes

/**
 * This test ensures that a plot with markers is serialized correctly.
 */
@Test
public void testSerialization4() {
    DefaultCategoryDataset dataset = new DefaultCategoryDataset();
    JFreeChart chart = ChartFactory.createBarChart(
            "Test Chart", "Category Axis", "Value Axis",
            dataset, PlotOrientation.VERTICAL, true, true, false);
    CategoryPlot plot = (CategoryPlot) chart.getPlot();
    plot.addRangeMarker(new ValueMarker(1.1), Layer.FOREGROUND);
    plot.addRangeMarker(new IntervalMarker(2.2, 3.3), Layer.BACKGROUND);
    JFreeChart chart2 = (JFreeChart) TestUtilities.serialised(chart);
    assertEquals(chart, chart2);

    // now check that the chart is usable...
    try {
        chart2.createBufferedImage(300, 200);
    }
    catch (Exception e) {
        fail("No exception should be thrown.");
    }
}

Example 2

Source File: CategoryPlotTest.java From buffer_bci with GNU General Public License v3.0

6 votes

/**
 * Serialize an instance, restore it, and check for equality.
 */
@Test
public void testSerialization3() {
    DefaultCategoryDataset dataset = new DefaultCategoryDataset();
    JFreeChart chart = ChartFactory.createBarChart(
            "Test Chart", "Category Axis", "Value Axis", dataset,
            PlotOrientation.VERTICAL, true, true, false);
    JFreeChart chart2 = (JFreeChart) TestUtilities.serialised(chart);

    // now check that the chart is usable...
    try {
        chart2.createBufferedImage(300, 200);
    }
    catch (Exception e) {
        fail("No exception should be thrown.");
    }
}

Example 3

Source File: LogAxisTests.java From astor with GNU General Public License v2.0

6 votes

/**
 * A simple test for the auto-range calculation looking at a
 * LogAxis used as the range axis for a CategoryPlot.
 */
public void testAutoRange1() {
    DefaultCategoryDataset dataset = new DefaultCategoryDataset();
    dataset.setValue(100.0, "Row 1", "Column 1");
    dataset.setValue(200.0, "Row 1", "Column 2");
    JFreeChart chart = ChartFactory.createBarChart(
        "Test",
        "Categories",
        "Value",
        dataset,
        PlotOrientation.VERTICAL,
        false,
        false,
        false
    );
    CategoryPlot plot = (CategoryPlot) chart.getPlot();
    LogAxis axis = new LogAxis("Log(Y)");
    plot.setRangeAxis(axis);
    assertEquals(0.0, axis.getLowerBound(), EPSILON);
    assertEquals(2.6066426411261268E7, axis.getUpperBound(), EPSILON);
}

Example 4

Source File: NominalAttributeStatisticsModel.java From rapidminer-studio with GNU Affero General Public License v3.0

6 votes

/**
 * Creates the histogram chart.
 * 
 * @return
 */
private JFreeChart createBarChart() {
	JFreeChart chart = ChartFactory.createBarChart(null, null, null, createBarDataset(), PlotOrientation.VERTICAL,
			false, false, false);
	AbstractAttributeStatisticsModel.setDefaultChartFonts(chart);
	chart.setBackgroundPaint(null);
	chart.setBackgroundImageAlpha(0.0f);

	CategoryPlot plot = (CategoryPlot) chart.getPlot();
	plot.setRangeGridlinesVisible(false);
	plot.setDomainGridlinesVisible(false);
	plot.setOutlineVisible(false);
	plot.setRangeZeroBaselineVisible(false);
	plot.setDomainGridlinesVisible(false);
	plot.setBackgroundPaint(COLOR_INVISIBLE);
	plot.setBackgroundImageAlpha(0.0f);

	BarRenderer renderer = (BarRenderer) plot.getRenderer();
	renderer.setSeriesPaint(0, AttributeGuiTools.getColorForValueType(Ontology.NOMINAL));
	renderer.setBarPainter(new StandardBarPainter());
	renderer.setDrawBarOutline(true);
	renderer.setShadowVisible(false);

	return chart;
}

Example 5

Source File: CategoryPlotTest.java From ECG-Viewer with GNU General Public License v2.0

6 votes

/**
 * Serialize an instance, restore it, and check for equality.
 */
@Test
public void testSerialization3() {
    DefaultCategoryDataset dataset = new DefaultCategoryDataset();
    JFreeChart chart = ChartFactory.createBarChart(
            "Test Chart", "Category Axis", "Value Axis", dataset,
            PlotOrientation.VERTICAL, true, true, false);
    JFreeChart chart2 = (JFreeChart) TestUtilities.serialised(chart);

    // now check that the chart is usable...
    try {
        chart2.createBufferedImage(300, 200);
    }
    catch (Exception e) {
        fail("No exception should be thrown.");
    }
}

Example 6

Source File: BarChartDemo1.java From buffer_bci with GNU General Public License v3.0

6 votes

/**
 * Creates a sample chart.
 *
 * @param dataset  the dataset.
 *
 * @return The chart.
 */
private static JFreeChart createChart(CategoryDataset dataset) {
    JFreeChart chart = ChartFactory.createBarChart(
        "Performance: JFreeSVG vs Batik", null /* x-axis label*/, 
            "Milliseconds" /* y-axis label */, dataset);
    chart.addSubtitle(new TextTitle("Time to generate 1000 charts in SVG " 
            + "format (lower bars = better performance)"));
    chart.setBackgroundPaint(Color.white);
    CategoryPlot plot = (CategoryPlot) chart.getPlot();

    // ******************************************************************
    //  More than 150 demo applications are included with the JFreeChart
    //  Developer Guide...for more information, see:
    //
    //  >   http://www.object-refinery.com/jfreechart/guide.html
    //
    // ******************************************************************

    NumberAxis rangeAxis = (NumberAxis) plot.getRangeAxis();
    rangeAxis.setStandardTickUnits(NumberAxis.createIntegerTickUnits());
    BarRenderer renderer = (BarRenderer) plot.getRenderer();
    renderer.setDrawBarOutline(false);
    chart.getLegend().setFrame(BlockBorder.NONE);
    return chart;
}

Example 7

Source File: BarChartTests.java From astor with GNU General Public License v2.0

6 votes

/**
 * Create a bar chart with sample data in the range -3 to +3.
 *
 * @return The chart.
 */
private static JFreeChart createBarChart() {

    // create a dataset...
    Number[][] data = new Integer[][]
        {{new Integer(-3), new Integer(-2)},
         {new Integer(-1), new Integer(1)},
         {new Integer(2), new Integer(3)}};

    CategoryDataset dataset = DatasetUtilities.createCategoryDataset("S",
            "C", data);

    // create the chart...
    return ChartFactory.createBarChart("Bar Chart", "Domain", "Range",
            dataset, true);

}

Example 8

Source File: BeltNominalColumnStatisticsModel.java From rapidminer-studio with GNU Affero General Public License v3.0

6 votes

/**
 * Creates the histogram chart.
 */
private JFreeChart createBarChart() {
	JFreeChart chart = ChartFactory.createBarChart(null, null, null, createBarDataset(), PlotOrientation.VERTICAL,
			false, false, false);
	setDefaultChartFonts(chart);
	chart.setBackgroundPaint(null);
	chart.setBackgroundImageAlpha(0.0f);

	CategoryPlot plot = (CategoryPlot) chart.getPlot();
	plot.setRangeGridlinesVisible(false);
	plot.setDomainGridlinesVisible(false);
	plot.setOutlineVisible(false);
	plot.setRangeZeroBaselineVisible(false);
	plot.setDomainGridlinesVisible(false);
	plot.setBackgroundPaint(COLOR_INVISIBLE);
	plot.setBackgroundImageAlpha(0.0f);

	BarRenderer renderer = (BarRenderer) plot.getRenderer();
	renderer.setSeriesPaint(0, AttributeGuiTools.getColorForValueType(Ontology.NOMINAL));
	renderer.setBarPainter(new StandardBarPainter());
	renderer.setDrawBarOutline(true);
	renderer.setShadowVisible(false);

	return chart;
}

Example 9

Source File: NumberAxisTest.java From ccu-historian with GNU General Public License v3.0

5 votes

/**
 * A simple test for the auto-range calculation looking at a
 * NumberAxis used as the range axis for a CategoryPlot.
 */
@Test
public void testAutoRange1() {
    DefaultCategoryDataset dataset = new DefaultCategoryDataset();
    dataset.setValue(100.0, "Row 1", "Column 1");
    dataset.setValue(200.0, "Row 1", "Column 2");
    JFreeChart chart = ChartFactory.createBarChart("Test", "Categories",
            "Value", dataset);
    CategoryPlot plot = (CategoryPlot) chart.getPlot();
    NumberAxis axis = (NumberAxis) plot.getRangeAxis();
    assertEquals(axis.getLowerBound(), 0.0, EPSILON);
    assertEquals(axis.getUpperBound(), 210.0, EPSILON);
}

Example 10

Source File: CategoryHistogram.java From hortonmachine with GNU General Public License v3.0

5 votes

public JFreeChart getChart() {
    if (chart == null) {
        createDataset();
        chart = ChartFactory.createBarChart(title,
        // chart title
                xLabel,
                // domain axis label
                yLabel,
                // range axis label
                dataset,
                // data
                PlotOrientation.VERTICAL,
                // orientation
                false,
                // include legend
                true,
                // tooltips?
                false
        // URLs?
                );

        CategoryPlot plot = (CategoryPlot) chart.getPlot();
        CategoryAxis rangeAxis = plot.getDomainAxis();
        rangeAxis.setCategoryLabelPositions(CategoryLabelPositions.UP_90);
    }
    return chart;
}

Example 11

Source File: NumberAxisTest.java From buffer_bci with GNU General Public License v3.0

5 votes

/**
 * A simple test for the auto-range calculation looking at a
 * NumberAxis used as the range axis for a CategoryPlot.
 */
@Test
public void testAutoRange1() {
    DefaultCategoryDataset dataset = new DefaultCategoryDataset();
    dataset.setValue(100.0, "Row 1", "Column 1");
    dataset.setValue(200.0, "Row 1", "Column 2");
    JFreeChart chart = ChartFactory.createBarChart("Test", "Categories",
            "Value", dataset);
    CategoryPlot plot = (CategoryPlot) chart.getPlot();
    NumberAxis axis = (NumberAxis) plot.getRangeAxis();
    assertEquals(axis.getLowerBound(), 0.0, EPSILON);
    assertEquals(axis.getUpperBound(), 210.0, EPSILON);
}

Example 12

Source File: ParetoChartPlotter.java From rapidminer-studio with GNU Affero General Public License v3.0

4 votes

private JFreeChart createChart() {
	if (data.getItemCount() > 0) {
		// get cumulative percentages
		KeyedValues cumulative = DataUtilities.getCumulativePercentages(data);

		CategoryDataset categoryDataset = DatasetUtilities.createCategoryDataset(
				"Count for " + this.dataTable.getColumnName(this.countColumn) + " = " + countValue, data);

		// create the chart...
		final JFreeChart chart = ChartFactory.createBarChart(null, // chart title
				this.dataTable.getColumnName(this.groupByColumn), // domain axis label
				"Count", // range axis label
				categoryDataset, // data
				PlotOrientation.VERTICAL, true, // include legend
				true, false);

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

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

		CategoryAxis domainAxis = plot.getDomainAxis();
		domainAxis.setLowerMargin(0.02);
		domainAxis.setUpperMargin(0.02);
		domainAxis.setLabelFont(LABEL_FONT_BOLD);
		domainAxis.setTickLabelFont(LABEL_FONT);

		// set the range axis to display integers only...
		NumberAxis rangeAxis = (NumberAxis) plot.getRangeAxis();
		rangeAxis.setStandardTickUnits(NumberAxis.createIntegerTickUnits(Locale.US));
		rangeAxis.setLabelFont(LABEL_FONT_BOLD);
		rangeAxis.setTickLabelFont(LABEL_FONT);

		// second data set (cumulative percentages)
		CategoryDataset dataset2 = DatasetUtilities.createCategoryDataset("Cumulative (Percent)", cumulative);

		LineAndShapeRenderer renderer2 = new LineAndShapeRenderer();
		renderer2.setSeriesPaint(0, SwingTools.VERY_DARK_BLUE.darker());

		NumberAxis axis2 = new NumberAxis("Percent of " + countValue);
		axis2.setNumberFormatOverride(NumberFormat.getPercentInstance());
		axis2.setLabelFont(LABEL_FONT_BOLD);
		axis2.setTickLabelFont(LABEL_FONT);

		plot.setRangeAxis(1, axis2);
		plot.setDataset(1, dataset2);
		plot.setRenderer(1, renderer2);
		plot.mapDatasetToRangeAxis(1, 1);

		axis2.setTickUnit(new NumberTickUnit(0.1));

		// show grid lines
		plot.setRangeGridlinesVisible(true);

		// bring cumulative line to front
		plot.setDatasetRenderingOrder(DatasetRenderingOrder.FORWARD);

		if (isLabelRotating()) {
			domainAxis.setTickLabelsVisible(true);
			domainAxis.setCategoryLabelPositions(CategoryLabelPositions.createUpRotationLabelPositions(Math.PI / 2.0d));
		}

		return chart;
	} else {
		return null;
	}
}

Example 13

Source File: MotivationalViewer.java From cst with GNU Lesser General Public License v3.0

4 votes

@Override
public synchronized void run() {

    DefaultCategoryDataset dataset = new DefaultCategoryDataset();

    final JFreeChart chart = ChartFactory.createBarChart(
            getTitle(),
            getEntity(),
            "Value",
            dataset,
            PlotOrientation.VERTICAL,
            true,
            true,
            false
    );

    final CategoryPlot plot = chart.getCategoryPlot();
    plot.setBackgroundPaint(Color.lightGray);
    plot.setDomainGridlinePaint(Color.white);
    plot.setRangeGridlinePaint(Color.white);
    chart.setBackgroundPaint(Color.lightGray);

    ChartFrame frame= new ChartFrame(getTitle(), chart);
    frame.pack();
    frame.setVisible(true);

    while (true) {
        ArrayList<Codelet> tempCodeletsList = new ArrayList<Codelet>();
        tempCodeletsList.addAll(this.getListOfMotivationalEntities());

        synchronized (tempCodeletsList) {

            for (Codelet co : tempCodeletsList) {
                dataset.addValue(co.getActivation(), co.getName(), "activation");
            }
            try {
                Thread.currentThread().sleep(getRefreshPeriod());
            } catch (InterruptedException e) {
                e.printStackTrace();
            }

        }
    }
}

Example 14

Source File: JObfAnalysis.java From JByteMod-Beta with GNU General Public License v2.0

4 votes

private JFreeChart createChart(CategoryDataset categoryDataset) {
  String[] desc = getDescriptors();
  JFreeChart chart = ChartFactory.createBarChart(desc[0], desc[1], desc[2], categoryDataset);
  return chart;
}

Example 15

Source File: CumulativeCurveChart.java From Knowage-Server with GNU Affero General Public License v3.0

4 votes

public JFreeChart createChart(DatasetMap datasetMap) {
	CategoryDataset datasetValue=(CategoryDataset)datasetMap.getDatasets().get("1");
	CategoryDataset datasetCumulative=(CategoryDataset)datasetMap.getDatasets().get("2");


	JFreeChart chart = ChartFactory.createBarChart(
			name,  // chart title
			xLabel,                     // domain axis label
			yLabel,                     // range axis label
			datasetValue,                        // data
			PlotOrientation.VERTICAL,
			true,                           // include legend
			true,
			false
	);

	chart.setBackgroundPaint(Color.white);

	// get a reference to the plot for further customisation...
	CategoryPlot plot = (CategoryPlot) chart.getPlot();
	plot.setBackgroundPaint(Color.lightGray);
	plot.setRangeGridlinePaint(Color.white);
	CategoryAxis domainAxis = plot.getDomainAxis();
	domainAxis.setLowerMargin(0.02);
	domainAxis.setUpperMargin(0.02);
	domainAxis.setCategoryLabelPositions(CategoryLabelPositions.UP_90);
	// set the range axis to display integers only...
	NumberAxis rangeAxis = (NumberAxis) plot.getRangeAxis();
	rangeAxis.setStandardTickUnits(NumberAxis.createIntegerTickUnits());

	LineAndShapeRenderer renderer2 = new LineAndShapeRenderer();

	NumberAxis axis2 = new NumberAxis("Percent");
	axis2.setNumberFormatOverride(NumberFormat.getPercentInstance());
	plot.setRangeAxis(1, axis2);
	plot.setDataset(1, datasetCumulative);
	plot.setRenderer(1, renderer2);
	plot.mapDatasetToRangeAxis(1, 1);

	plot.setDatasetRenderingOrder(DatasetRenderingOrder.FORWARD);
	return chart;   
}

Example 16

Source File: BarChartDemo1.java From astor with GNU General Public License v2.0

4 votes

/**
 * Creates a sample chart.
 *
 * @param dataset  the dataset.
 *
 * @return The chart.
 */
private static JFreeChart createChart(CategoryDataset dataset) {

    JFreeChart chart = ChartFactory.createBarChart("Bar Chart Demo 1",
            "Category", "Value", dataset, true);                   
    CategoryPlot plot = (CategoryPlot) chart.getPlot();

    // ******************************************************************
    //  More than 150 demo applications are included with the JFreeChart
    //  Developer Guide...for more information, see:
    //
    //  >   http://www.object-refinery.com/jfreechart/guide.html
    //
    // ******************************************************************

    // 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;

}

Example 17

Source File: UserChartController.java From airsonic-advanced with GNU General Public License v3.0

4 votes

private JFreeChart createChart(CategoryDataset dataset, HttpServletRequest request) {
    JFreeChart chart = ChartFactory.createBarChart(null, null, null, dataset, PlotOrientation.HORIZONTAL, false, false, false);

    CategoryPlot plot = chart.getCategoryPlot();
    Paint background = new GradientPaint(0, 0, Color.lightGray, 0, IMAGE_MIN_HEIGHT, Color.white);
    plot.setBackgroundPaint(background);
    plot.setDomainGridlinePaint(Color.white);
    plot.setDomainGridlinesVisible(true);
    plot.setRangeGridlinePaint(Color.white);
    plot.setRangeAxisLocation(AxisLocation.BOTTOM_OR_LEFT);

    LogarithmicAxis rangeAxis = new LogarithmicAxis(null);
    rangeAxis.setStrictValuesFlag(false);
    rangeAxis.setAllowNegativesFlag(true);
    plot.setRangeAxis(rangeAxis);

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

    // Set up gradient paint 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);

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

    // Set theme-specific colors.
    Color bgColor = getBackground(request);
    Color fgColor = getForeground(request);

    chart.setBackgroundPaint(bgColor);

    domainAxis.setTickLabelPaint(fgColor);
    domainAxis.setTickMarkPaint(fgColor);
    domainAxis.setAxisLinePaint(fgColor);

    rangeAxis.setTickLabelPaint(fgColor);
    rangeAxis.setTickMarkPaint(fgColor);
    rangeAxis.setAxisLinePaint(fgColor);

    return chart;
}

Example 18

Source File: DistributionPlotter.java From rapidminer-studio with GNU Affero General Public License v3.0

4 votes

private JFreeChart createNominalChart() {
	JFreeChart chart;
	CategoryDataset dataset = createNominalDataSet();

	// create the chart...
	String domainName = dataTable == null ? MODEL_DOMAIN_AXIS_NAME : dataTable.getColumnName(plotColumn);
	chart = ChartFactory.createBarChart(null, // chart title
			domainName, // x axis label
			RANGE_AXIS_NAME, // y axis label
			dataset, // data
			PlotOrientation.VERTICAL, true, // include legend
			true, // tooltips
			false // urls
			);

	CategoryPlot plot = chart.getCategoryPlot();

	BarRenderer renderer = new BarRenderer();
	if (dataset.getRowCount() == 1) {
		renderer.setSeriesPaint(0, Color.RED);
		renderer.setSeriesFillPaint(0, Color.RED);
	} else {
		for (int i = 0; i < dataset.getRowCount(); i++) {
			Color color = getColorProvider(true).getPointColor((double) i / (double) (dataset.getRowCount() - 1));
			renderer.setSeriesPaint(i, color);
			renderer.setSeriesFillPaint(i, color);
		}
	}
	renderer.setBarPainter(new RapidBarPainter());
	renderer.setDrawBarOutline(true);
	plot.setRenderer(renderer);

	// rotate labels
	if (isLabelRotating()) {
		plot.getDomainAxis().setTickLabelsVisible(true);
		plot.getDomainAxis().setCategoryLabelPositions(
				CategoryLabelPositions.createUpRotationLabelPositions(Math.PI / 2.0d));
	}

	return chart;
}

Example 19

Source File: MonitoringPage.java From webanno with Apache License 2.0

4 votes

private JFreeChart createProgressChart(Map<String, Integer> chartValues, int aMaxValue,
        boolean aIsPercentage)
{
    // fill dataset
    DefaultCategoryDataset dataset = new DefaultCategoryDataset();
    if (aMaxValue > 0) {
        for (String chartValue : chartValues.keySet()) {
            dataset.setValue(chartValues.get(chartValue), "Completion", chartValue);
        }
    }
    
    // create chart
    JFreeChart chart = ChartFactory.createBarChart(null, null, null, dataset,
            PlotOrientation.HORIZONTAL, false, false, false);

    CategoryPlot plot = chart.getCategoryPlot();
    plot.setOutlineVisible(false);
    plot.setBackgroundPaint(null);
    plot.setNoDataMessage("No data");
    plot.setInsets(new RectangleInsets(0, 20, 0, 20));
    if (aMaxValue > 0) {
        plot.getRangeAxis().setRange(0.0, aMaxValue);
        ((NumberAxis) plot.getRangeAxis()).setNumberFormatOverride(new DecimalFormat("0"));
        // For documents less than 10, avoid repeating the number of documents such
        // as 0 0 1 1 1 - NumberTickUnit automatically determines the range
        if (!aIsPercentage && aMaxValue <= 10) {
            TickUnits standardUnits = new TickUnits();
            NumberAxis tick = new NumberAxis();
            tick.setTickUnit(new NumberTickUnit(1));
            standardUnits.add(tick.getTickUnit());
            plot.getRangeAxis().setStandardTickUnits(standardUnits);
        }
    }
    else {
        plot.getRangeAxis().setVisible(false);
        plot.getDomainAxis().setVisible(false);
    }

    BarRenderer renderer = new BarRenderer();
    renderer.setBarPainter(new StandardBarPainter());
    renderer.setShadowVisible(false);
    // renderer.setGradientPaintTransformer(new
    // StandardGradientPaintTransformer(
    // GradientPaintTransformType.HORIZONTAL));
    renderer.setSeriesPaint(0, Color.BLUE);
    chart.getCategoryPlot().setRenderer(renderer);

    return chart;
}

Example 20

Source File: ServerWideReportManagerImpl.java From sakai with Educational Community License v2.0

4 votes

private byte[] createToolAnalysisChart (int width, int height)
{
	CategoryDataset dataset = getToolAnalysisDataSet ();
	
	if (dataset == null) {
		return generateNoDataChart(width, height);
	}
			
	JFreeChart chart = ChartFactory.createBarChart (
			null, // chart title
			null, // domain axis label
			null, // range axis label
			dataset, // data
			PlotOrientation.HORIZONTAL, // the plot orientation
			false, // legend
			false, // tooltips
			false // urls
	);
	
	// set background
	chart.setBackgroundPaint (parseColor (statsManager.getChartBackgroundColor ()));

	// set chart border
	chart.setPadding (new RectangleInsets (10, 5, 5, 5));
	chart.setBorderVisible (true);
	chart.setBorderPaint (parseColor ("#cccccc"));

	// set anti alias
	chart.setAntiAlias (true);

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

	// set transparency
	plot.setForegroundAlpha (0.7f);
	plot.setAxisOffset (new RectangleInsets (5.0, 5.0, 5.0, 5.0));
	plot.setBackgroundPaint (Color.lightGray);
	plot.setDomainGridlinesVisible (false);
	plot.setRangeGridlinesVisible (true);
	plot.setRangeGridlinePaint (Color.white);
	
       CategoryAxis domainAxis = plot.getDomainAxis();
       domainAxis.setVisible(false);
       domainAxis.setUpperMargin (0);
       domainAxis.setLowerMargin (0);
       
       NumberAxis rangeAxis = (NumberAxis) plot.getRangeAxis();
       rangeAxis.setUpperMargin(0.20);
	rangeAxis.setStandardTickUnits (NumberAxis.createIntegerTickUnits ());
       
       BarRenderer renderer = (BarRenderer) plot.getRenderer();
       CategoryItemLabelGenerator generator 
           = new StandardCategoryItemLabelGenerator("{1}", 
                   NumberFormat.getInstance(new ResourceLoader().getLocale()));
       renderer.setDefaultItemLabelGenerator(generator);
       renderer.setDefaultItemLabelFont(new Font("SansSerif", Font.PLAIN, 9));
       renderer.setDefaultItemLabelsVisible(true);
       renderer.setItemMargin (0);
       renderer.setSeriesPaint (0, Color.BLUE);
       
       BufferedImage img = chart.createBufferedImage (width, height);
	final ByteArrayOutputStream out = new ByteArrayOutputStream();
	try{
		ImageIO.write(img, "png", out);
	}catch(IOException e){
		log.warn("Error occurred while generating SiteStats chart image data", e);
	}
	return out.toByteArray();
}