Java DefaultPieDataset.setValue方法代码示例

import org.jfree.data.general.DefaultPieDataset; //导入方法依赖的package包/类
@Override
public JFreeChart createChart(Element element, ChartSource source) {
    Attribute key = source.getAttributeProperty(PIE_ATTRIBUTE_KEY);
    Attribute value = source.getAttributeProperty(PIE_ATTRIBUTE_VALUE);
    if ((key == null) || (value == null))
        throw new ChartNotSetupedException();
    DefaultPieDataset dataset = new DefaultPieDataset();
    for (Element element2 : source.getElements()) {
        Object v1 = engine.getAttribute(element2, key);
        Object v2 = engine.getAttribute(element2, value);
        if ((v1 != null) && (v2 != null))
            dataset.setValue(toString(v1), toDouble(v2));
    }
    return ChartFactory.createPieChart(element.getName(), dataset, true,
            true, false);
}
 

import org.jfree.data.general.DefaultPieDataset; //导入方法依赖的package包/类
/**
 * Some checks for the getIndex() method.
 */
public void testGetIndex() {
    DefaultPieDataset d = new DefaultPieDataset();
    d.setValue("A", 1.0);
    d.setValue("B", 2.0);
    assertEquals(0, d.getIndex("A"));
    assertEquals(1, d.getIndex("B"));
    assertEquals(-1, d.getIndex("XX"));
    
    boolean pass = false;
    try {
        d.getIndex(null);
    }
    catch (IllegalArgumentException e) {
        pass = true;
    }
    assertTrue(pass);
}
 

import org.jfree.data.general.DefaultPieDataset; //导入方法依赖的package包/类
/**
 * Creates 3D pie chart with OS usage statistics.
 * 
 * @return Filled 3D pie chart.
 */
public JFreeChart getChart() {
    DefaultPieDataset data = new DefaultPieDataset();

    data.setValue("Mac", 29);
    data.setValue("Windows", 51);
    data.setValue("Linux", 20);

    JFreeChart chart = ChartFactory.createPieChart3D("", data);
    PiePlot3D plot = (PiePlot3D) chart.getPlot();
    plot.setStartAngle(290);
    plot.setDirection(Rotation.CLOCKWISE);
    plot.setForegroundAlpha(0.5f);

    return chart;
}
 

import org.jfree.data.general.DefaultPieDataset; //导入方法依赖的package包/类
/**
 * Common test setup.
 */
protected void setUp() {

    // create a dataset...
    DefaultPieDataset data = new DefaultPieDataset();
    data.setValue("Java", new Double(43.2));
    data.setValue("Visual Basic", new Double(0.0));
    data.setValue("C/C++", new Double(17.5));

    // create the chart...
    this.pieChart = ChartFactory.createPieChart(
        "Pie Chart",  // chart title
        data,         // data
        true,         // include legend
        true,
        false
    );

}
 

import org.jfree.data.general.DefaultPieDataset; //导入方法依赖的package包/类
/**
 * Creates a pie chart.
 *
 * @return the pie chart.
 */
private static JFreeChart createPieChart() {
    // create a dataset...
    DefaultPieDataset data = new DefaultPieDataset();
    data.setValue("Java", new Double(43.2));
    data.setValue("Visual Basic", new Double(0.0));
    data.setValue("C/C++", new Double(17.5));

    // create the chart...
    return ChartFactory.createPieChart("Pie Chart",  // chart title
                                       data,         // data
                                       true,         // include legend
                                       true,
                                       false
                                       );
}
 

import org.jfree.data.general.DefaultPieDataset; //导入方法依赖的package包/类
/**
 * Creates a pie chart.
 *
 * @return The pie chart.
 */
private static JFreeChart createPieChart() {
    // create a dataset...
    DefaultPieDataset data = new DefaultPieDataset();
    data.setValue("Java", new Double(43.2));
    data.setValue("Visual Basic", new Double(0.0));
    data.setValue("C/C++", new Double(17.5));

    // create the chart...
    return ChartFactory.createPieChart("Pie Chart",  // chart title
                                       data,         // data
                                       true,         // include legend
                                       true,
                                       false
                                       );
}
 

import org.jfree.data.general.DefaultPieDataset; //导入方法依赖的package包/类
/**
 * Draws a pie chart where the label generator returns null.
 */
@Test
public void testDrawWithNullLegendLabels() {
    DefaultPieDataset dataset = new DefaultPieDataset();
    dataset.setValue("L1", 12.0);
    dataset.setValue("L2", 11.0);
    JFreeChart chart = ChartFactory.createPieChart("Test", dataset, true,
            false, false);
    PiePlot plot = (PiePlot) chart.getPlot();
    plot.setLegendLabelGenerator(new NullLegendLabelGenerator());
    boolean success = false;
    try {
        BufferedImage image = new BufferedImage(200 , 100,
                BufferedImage.TYPE_INT_RGB);
        Graphics2D g2 = image.createGraphics();
        chart.draw(g2, new Rectangle2D.Double(0, 0, 200, 100), null, null);
        g2.dispose();
        success = true;
    }
    catch (Exception e) {
      success = false;
    }
    assertTrue(success);
}
 

import org.jfree.data.general.DefaultPieDataset; //导入方法依赖的package包/类
public static DefaultPieDataset createDefaultPieDataset(String[] categories, Object[] datas) {
    DefaultPieDataset dataset = new DefaultPieDataset();
    for (int i = 0; i < categories.length && categories != null; i++) {
        String value = datas[i].toString();
        if (isPercent(value)) {
            value = value.substring(0, value.length() - 1);
        }
        if (isNumber(value)) {
            dataset.setValue(categories[i], Double.valueOf(value));
        }
    }
    return dataset;

}
 

import org.jfree.data.general.DefaultPieDataset; //导入方法依赖的package包/类
/**
 * For datasets, the equals() method just checks keys and values.
 */
public void testEquals() {
    DefaultCategoryDataset underlying = new DefaultCategoryDataset();
    underlying.addValue(1.1, "R1", "C1");
    underlying.addValue(2.2, "R1", "C2");
    CategoryToPieDataset d1 = new CategoryToPieDataset(underlying, 
            TableOrder.BY_COLUMN, 1);
    DefaultPieDataset d2 = new DefaultPieDataset();
    d2.setValue("R1", 2.2);
    assertTrue(d1.equals(d2));
}
 

import org.jfree.data.general.DefaultPieDataset; //导入方法依赖的package包/类
private static DefaultPieDataset getDataSet() {
    DefaultPieDataset dataset = new DefaultPieDataset();
    dataset.setValue("苹果", 100);
    dataset.setValue("梨子", 200);
    dataset.setValue("葡萄", 300);
    dataset.setValue("香蕉", 400);
    dataset.setValue("荔枝", 500);
    return dataset;
}
 

import org.jfree.data.general.DefaultPieDataset; //导入方法依赖的package包/类
/**
 * Creates a sample dataset.
 * 
 * Source: http://www.bbc.co.uk/news/business-15489523
 *
 * @return A sample dataset.
 */
private static PieDataset createDataset() {
    DefaultPieDataset dataset = new DefaultPieDataset();
    dataset.setValue("Samsung", new Double(27.8));
    dataset.setValue("Others", new Double(55.3));
    dataset.setValue("Nokia", new Double(16.8));
    dataset.setValue("Apple", new Double(17.1));
    return dataset;
}
 

import org.jfree.data.general.DefaultPieDataset; //导入方法依赖的package包/类
/**
 * Creates 3D pie chart form given list of {@link PollOption} objects.
 * 
 * @param results List of {@link PollOption} objects.
 * @return Filled 3D pie chart.
 */
public static JFreeChart getChart(List<PollOption> results) {
    DefaultPieDataset result = new DefaultPieDataset();
    for (PollOption r : results) {
        result.setValue(r.getName(), r.getVotes());
    }

    JFreeChart chart = ChartFactory.createPieChart3D("", result);
    PiePlot3D plot = (PiePlot3D) chart.getPlot();
    plot.setStartAngle(290);
    plot.setDirection(Rotation.CLOCKWISE);
    plot.setForegroundAlpha(0.5f);
    return chart;
}
 

import org.jfree.data.general.DefaultPieDataset; //导入方法依赖的package包/类
/**
 * Test that the generated URL is as expected.
 */
public void testURL() {
    DefaultPieDataset dataset = new DefaultPieDataset();
    dataset.setValue("Alpha", new Double(5.0));
    dataset.setValue("Beta", new Double(5.5));
    StandardPieURLGenerator g1 = new StandardPieURLGenerator(
            "chart.jsp", "category");
    String url = g1.generateURL(dataset, "Beta", 0);
    assertEquals("chart.jsp?category=Beta&pieIndex=0", url);
}
 

import org.jfree.data.general.DefaultPieDataset; //导入方法依赖的package包/类
/**
 * Common test setup.
 */
protected void setUp() {
    // create a dataset...
    DefaultPieDataset dataset = new DefaultPieDataset();
    dataset.setValue("Java", new Double(43.2));
    dataset.setValue("Visual Basic", new Double(0.0));
    dataset.setValue("C/C++", new Double(17.5));
    this.pieChart = createPieChart3D(dataset);
}
 

import org.jfree.data.general.DefaultPieDataset; //导入方法依赖的package包/类
/**
 * Some checks for the limitPieDataset() methods.
 */
public void testLimitPieDataset() {
    
    // check that empty dataset is handled OK
    DefaultPieDataset d1 = new DefaultPieDataset();
    PieDataset d2 = DatasetUtilities.createConsolidatedPieDataset(
        d1, "Other", 0.05
    );
    assertEquals(0, d2.getItemCount());
    
    // check that minItem limit is observed
    d1.setValue("Item 1", 1.0);
    d1.setValue("Item 2", 49.50);
    d1.setValue("Item 3", 49.50);
    d2 = DatasetUtilities.createConsolidatedPieDataset(d1, "Other", 0.05);
    assertEquals(3, d2.getItemCount());
    assertEquals("Item 1", d2.getKey(0));
    assertEquals("Item 2", d2.getKey(1));
    assertEquals("Item 3", d2.getKey(2));

    // check that minItem limit is observed
    d1.setValue("Item 4", 1.0);
    d2 = DatasetUtilities.createConsolidatedPieDataset(
        d1, "Other", 0.05, 2
    );
    
    // and that simple aggregation works
    assertEquals(3, d2.getItemCount());
    assertEquals("Item 2", d2.getKey(0));
    assertEquals("Item 3", d2.getKey(1));
    assertEquals("Other", d2.getKey(2));
    assertEquals(new Double(2.0), d2.getValue("Other"));
    
}