Examples of org.jfree.chart.axis.CategoryAxis

org.jfree.chart.axis.CategoryAxis
An axis that displays categories.

    /**
     * Serialize an instance, restore it, and check for equality.
     */
    public void testSerialization() {
        DefaultCategoryDataset dataset = new DefaultCategoryDataset();
        CategoryAxis domainAxis = new CategoryAxis("Domain");
        NumberAxis rangeAxis = new NumberAxis("Range");
        BarRenderer renderer = new BarRenderer();
        CategoryPlot p1 = new CategoryPlot(dataset, domainAxis, rangeAxis,
                renderer);
        p1.setOrientation(PlotOrientation.HORIZONTAL);

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    /**
     * Serialize an instance, restore it, and check for equality.
     */
    public void testSerialization2() {
        DefaultCategoryDataset data = new DefaultCategoryDataset();
        CategoryAxis domainAxis = new CategoryAxis("Domain");
        NumberAxis rangeAxis = new NumberAxis("Range");
        BarRenderer renderer = new BarRenderer();
        CategoryPlot p1 = new CategoryPlot(data, domainAxis, rangeAxis,
                renderer);
        p1.setOrientation(PlotOrientation.VERTICAL);

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     * with the dataset(s) and axes after deserialization.  See patch 1209475
     * at SourceForge.
     */
    public void testSerialization5() {
        DefaultCategoryDataset dataset1 = new DefaultCategoryDataset();
        CategoryAxis domainAxis1 = new CategoryAxis("Domain 1");
        NumberAxis rangeAxis1 = new NumberAxis("Range 1");
        BarRenderer renderer1 = new BarRenderer();
        CategoryPlot p1 = new CategoryPlot(dataset1, domainAxis1, rangeAxis1,
                renderer1);
        CategoryAxis domainAxis2 = new CategoryAxis("Domain 2");
        NumberAxis rangeAxis2 = new NumberAxis("Range 2");
        BarRenderer renderer2 = new BarRenderer();
        DefaultCategoryDataset dataset2 = new DefaultCategoryDataset();
        p1.setDataset(1, dataset2);
        p1.setDomainAxis(1, domainAxis2);
        p1.setRangeAxis(1, rangeAxis2);
        p1.setRenderer(1, renderer2);
        CategoryPlot p2 = null;
        try {
            ByteArrayOutputStream buffer = new ByteArrayOutputStream();
            ObjectOutput out = new ObjectOutputStream(buffer);
            out.writeObject(p1);
            out.close();
            ObjectInput in = new ObjectInputStream(
                    new ByteArrayInputStream(buffer.toByteArray()));
            p2 = (CategoryPlot) in.readObject();
            in.close();
        }
        catch (Exception e) {
            fail(e.toString());
        }
        assertEquals(p1, p2);


        // now check that all datasets, renderers and axes are being listened
        // too...
        CategoryAxis domainAxisA = p2.getDomainAxis(0);
        NumberAxis rangeAxisA = (NumberAxis) p2.getRangeAxis(0);
        DefaultCategoryDataset datasetA
                = (DefaultCategoryDataset) p2.getDataset(0);
        BarRenderer rendererA = (BarRenderer) p2.getRenderer(0);
        CategoryAxis domainAxisB = p2.getDomainAxis(1);
        NumberAxis rangeAxisB = (NumberAxis) p2.getRangeAxis(1);
        DefaultCategoryDataset datasetB
                = (DefaultCategoryDataset) p2.getDataset(1);
        BarRenderer rendererB  = (BarRenderer) p2.getRenderer(1);
        assertTrue(datasetA.hasListener(p2));
        assertTrue(domainAxisA.hasListener(p2));
        assertTrue(rangeAxisA.hasListener(p2));
        assertTrue(rendererA.hasListener(p2));
        assertTrue(datasetB.hasListener(p2));
        assertTrue(domainAxisB.hasListener(p2));
        assertTrue(rangeAxisB.hasListener(p2));
        assertTrue(rendererB.hasListener(p2));
    }

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    /**
     * A test for bug report 1169972.
     */
    public void test1169972() {
        CategoryPlot plot = new CategoryPlot(null, null, null, null);
        plot.setDomainAxis(new CategoryAxis("C"));
        plot.setRangeAxis(new NumberAxis("Y"));
        plot.setRenderer(new BarRenderer());
        plot.setDataset(new DefaultCategoryDataset());
        assertTrue(plot != null);
    }

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    /**
     * Some checks for the getDomainAxisIndex() method.
     */
    public void testGetDomainAxisIndex() {
        CategoryAxis domainAxis1 = new CategoryAxis("X1");
        CategoryAxis domainAxis2 = new CategoryAxis("X2");
        NumberAxis rangeAxis1 = new NumberAxis("Y1");
        CategoryPlot plot = new CategoryPlot(null, domainAxis1, rangeAxis1,
                null);
        assertEquals(0, plot.getDomainAxisIndex(domainAxis1));
        assertEquals(-1, plot.getDomainAxisIndex(domainAxis2));
        plot.setDomainAxis(1, domainAxis2);
        assertEquals(1, plot.getDomainAxisIndex(domainAxis2));
        assertEquals(-1, plot.getDomainAxisIndex(new CategoryAxis("X2")));
        boolean pass = false;
        try {
            plot.getDomainAxisIndex(null);
        }
        catch (IllegalArgumentException e) {

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    /**
     * Some checks for the getRangeAxisIndex() method.
     */
    public void testGetRangeAxisIndex() {
        CategoryAxis domainAxis1 = new CategoryAxis("X1");
        NumberAxis rangeAxis1 = new NumberAxis("Y1");
        NumberAxis rangeAxis2 = new NumberAxis("Y2");
        CategoryPlot plot = new CategoryPlot(null, domainAxis1, rangeAxis1,
                null);
        assertEquals(0, plot.getRangeAxisIndex(rangeAxis1));

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    /**
     * Some tests for the getDomainAxisForDataset() method.
     */
    public void testGetDomainAxisForDataset() {
        CategoryDataset dataset = new DefaultCategoryDataset();
        CategoryAxis xAxis = new CategoryAxis("X");
        NumberAxis yAxis = new NumberAxis("Y");
        CategoryItemRenderer renderer = new BarRenderer();
        CategoryPlot plot = new CategoryPlot(dataset, xAxis, yAxis, renderer);
        assertEquals(xAxis, plot.getDomainAxisForDataset(0));


        // should get IllegalArgumentException for negative index
        boolean pass = false;
        try {
            plot.getDomainAxisForDataset(-1);
        }
        catch (IllegalArgumentException e) {
            pass = true;
        }
        assertTrue(pass);


        // if multiple axes are mapped, the first in the list should be
        // returned...
        CategoryAxis xAxis2 = new CategoryAxis("X2");
        plot.setDomainAxis(1, xAxis2);
        assertEquals(xAxis, plot.getDomainAxisForDataset(0));


        plot.mapDatasetToDomainAxis(0, 1);
        assertEquals(xAxis2, plot.getDomainAxisForDataset(0));

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    /**
     * Some tests for the getRangeAxisForDataset() method.
     */
    public void testGetRangeAxisForDataset() {
        CategoryDataset dataset = new DefaultCategoryDataset();
        CategoryAxis xAxis = new CategoryAxis("X");
        NumberAxis yAxis = new NumberAxis("Y");
        CategoryItemRenderer renderer = new DefaultCategoryItemRenderer();
        CategoryPlot plot = new CategoryPlot(dataset, xAxis, yAxis, renderer);
        assertEquals(yAxis, plot.getRangeAxisForDataset(0));

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            DefaultStatisticalCategoryDataset dataset
                = new DefaultStatisticalCategoryDataset();
            dataset.add(1.0, 2.0, "S1", "C1");
            dataset.add(3.0, 4.0, "S1", "C2");
            CategoryPlot plot = new CategoryPlot(dataset,
                    new CategoryAxis("Category"), new NumberAxis("Value"),
                    new StatisticalLineAndShapeRenderer());
            JFreeChart chart = new JFreeChart(plot);
            /* BufferedImage image = */ chart.createBufferedImage(300, 200,
                    null);
            success = true;

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     * @param index  the axis index.
     *
     * @return A domain axis.
     */
    protected CategoryAxis getDomainAxis(CategoryPlot plot, int index) {
        CategoryAxis result = plot.getDomainAxis(index);
        if (result == null) {
            result = plot.getDomainAxis();
        }
        return result;
    }

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