Examples of org.jfree.chart.renderer.category.LevelRenderer

Package org.jfree.chart.renderer.category

Examples of org.jfree.chart.renderer.category.LevelRenderer

org.jfree.chart.renderer.category.LevelRenderer
A {@link CategoryItemRenderer} that draws individual data items ashorizontal lines, spaced in the same way as bars in a bar chart. The example shown here is generated by the OverlaidBarChartDemo2.java program included in the JFreeChart Demo Collection:


    /**
     * Test that the equals() method distinguishes all fields.
     */
    public void testEquals() {
        LevelRenderer r1 = new LevelRenderer();
        LevelRenderer r2 = new LevelRenderer();
        assertTrue(r1.equals(r2));
        assertTrue(r2.equals(r1));
        
        r1.setItemMargin(0.123);
        assertFalse(r1.equals(r2));
        r2.setItemMargin(0.123);
        assertTrue(r1.equals(r2));


        r1.setMaxItemWidth(0.234);
        assertFalse(r1.equals(r2));
        r2.setMaxItemWidth(0.234);
        assertTrue(r1.equals(r2));
    
    }

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    /**
     * Two objects that are equal are required to return the same hashCode. 
     */
    public void testHashcode() {
        LevelRenderer r1 = new LevelRenderer();
        LevelRenderer r2 = new LevelRenderer();
        assertTrue(r1.equals(r2));
        int h1 = r1.hashCode();
        int h2 = r2.hashCode();
        assertEquals(h1, h2);
    }

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    /**
     * Confirm that cloning works.
     */
    public void testCloning() {
        LevelRenderer r1 = new LevelRenderer();
        r1.setItemMargin(0.123);
        r1.setMaxItemWidth(0.234);
        LevelRenderer r2 = null;
        try {
            r2 = (LevelRenderer) r1.clone();
        }
        catch (CloneNotSupportedException e) {
            System.err.println("Failed to clone.");
        }
        assertTrue(r1 != r2);
        assertTrue(r1.getClass() == r2.getClass());
        assertTrue(r1.equals(r2));
        
        assertTrue(checkIndependence(r1, r2));
        
    }

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    /**
     * Serialize an instance, restore it, and check for equality.
     */
    public void testSerialization() {


        LevelRenderer r1 = new LevelRenderer();
        LevelRenderer r2 = null;


        try {
            ByteArrayOutputStream buffer = new ByteArrayOutputStream();
            ObjectOutput out = new ObjectOutputStream(buffer);
            out.writeObject(r1);

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        try {
            DefaultCategoryDataset dataset = new DefaultCategoryDataset();
            dataset.addValue(1.0, "S1", "C1");
            CategoryPlot plot = new CategoryPlot(dataset, 
                    new CategoryAxis("Category"), new NumberAxis("Value"), 
                    new LevelRenderer());
            JFreeChart chart = new JFreeChart(plot);
            /* BufferedImage image = */ chart.createBufferedImage(300, 200, 
                    null);
            success = true;
        }

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Related Classes of org.jfree.chart.renderer.category.LevelRenderer

org.jfree.chart.axis.CategoryAxis

org.jfree.chart.entity.CategoryItemEntity

org.jfree.chart.entity.EntityCollection

org.jfree.chart.event.RendererChangeEvent

org.jfree.chart.labels.CategoryItemLabelGenerator

org.jfree.chart.labels.CategoryLabelGenerator

org.jfree.chart.labels.CategoryToolTipGenerator

org.jfree.chart.plot.PlotOrientation

org.jfree.chart.renderer.category.junit.LevelRendererTests

org.jfree.chart.ui.RectangleEdge

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