Examples of org.jfree.data.statistics.SimpleHistogramBin

org.jfree.data.statistics.SimpleHistogramBin
A bin for the {@link SimpleHistogramDataset}.

      byte[] bytes = null;


      DefaultCategoryDataset categoryDataset = new DefaultCategoryDataset();
      SaleReportVO row = null;
      for(int i=0;i<rows.length;i++) {
        SimpleHistogramBin histogrambin = new SimpleHistogramBin(i, i+1, true, false);
        row = rows[i];
        categoryDataset.addValue(
          row.getValue()==null?0d:row.getValue().doubleValue(),
          "",
          row.getName()

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    public void testEquals() {
        SimpleHistogramDataset d1 = new SimpleHistogramDataset("Dataset 1");
        SimpleHistogramDataset d2 = new SimpleHistogramDataset("Dataset 1");
        assertTrue(d1.equals(d2));


        d1.addBin(new SimpleHistogramBin(1.0, 2.0));
        assertFalse(d1.equals(d2));
        d2.addBin(new SimpleHistogramBin(1.0, 2.0));
        assertTrue(d1.equals(d2));
    }

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        assertTrue(d1 != d2);
        assertTrue(d1.getClass() == d2.getClass());
        assertTrue(d1.equals(d2));


        // check that clone is independent of the original
        d2.addBin(new SimpleHistogramBin(2.0, 3.0));
        d2.addObservation(2.3);
        assertFalse(d1.equals(d2));
    }

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     */
    public void testClearObservations() {
        SimpleHistogramDataset d1 = new SimpleHistogramDataset("D1");
        d1.clearObservations();
        assertEquals(0, d1.getItemCount(0));
        d1.addBin(new SimpleHistogramBin(0.0, 1.0));
        d1.addObservation(0.5);
        assertEquals(1.0, d1.getYValue(0, 0), EPSILON);
    }

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    /**
     * Some checks for the removeAllBins() method.
     */
    public void testRemoveAllBins() {
        SimpleHistogramDataset d1 = new SimpleHistogramDataset("D1");
        d1.addBin(new SimpleHistogramBin(0.0, 1.0));
        d1.addObservation(0.5);
        d1.addBin(new SimpleHistogramBin(2.0, 3.0));
        assertEquals(2, d1.getItemCount(0));
        d1.removeAllBins();
        assertEquals(0, d1.getItemCount(0));
    }

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    /**
     * Some checks for the accepts() method.
     */
    public void testAccepts() {
        SimpleHistogramBin bin1 = new SimpleHistogramBin(1.0, 2.0);
        assertFalse(bin1.accepts(0.0));
        assertTrue(bin1.accepts(1.0));
        assertTrue(bin1.accepts(1.5));
        assertTrue(bin1.accepts(2.0));
        assertFalse(bin1.accepts(2.1));
        assertFalse(bin1.accepts(Double.NaN));


        SimpleHistogramBin bin2
            = new SimpleHistogramBin(1.0, 2.0, false, false);
        assertFalse(bin2.accepts(0.0));
        assertFalse(bin2.accepts(1.0));
        assertTrue(bin2.accepts(1.5));
        assertFalse(bin2.accepts(2.0));
        assertFalse(bin2.accepts(2.1));
        assertFalse(bin2.accepts(Double.NaN));
    }

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    /**
     * Some checks for the overlapsWith() method.
     */
    public void testOverlapsWidth() {
        SimpleHistogramBin b1 = new SimpleHistogramBin(1.0, 2.0);
        SimpleHistogramBin b2 = new SimpleHistogramBin(2.0, 3.0);
        SimpleHistogramBin b3 = new SimpleHistogramBin(3.0, 4.0);
        SimpleHistogramBin b4 = new SimpleHistogramBin(0.0, 5.0);
        SimpleHistogramBin b5 = new SimpleHistogramBin(2.0, 3.0, false, true);
        SimpleHistogramBin b6 = new SimpleHistogramBin(2.0, 3.0, true, false);
        assertTrue(b1.overlapsWith(b2));
        assertTrue(b2.overlapsWith(b1));
        assertFalse(b1.overlapsWith(b3));
        assertFalse(b3.overlapsWith(b1));
        assertTrue(b1.overlapsWith(b4));
        assertTrue(b4.overlapsWith(b1));
        assertFalse(b1.overlapsWith(b5));
        assertFalse(b5.overlapsWith(b1));
        assertTrue(b1.overlapsWith(b6));
        assertTrue(b6.overlapsWith(b1));
    }

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    /**
     * Ensure that the equals() method can distinguish all fields.
     */
    public void testEquals() {
        SimpleHistogramBin b1 = new SimpleHistogramBin(1.0, 2.0);
        SimpleHistogramBin b2 = new SimpleHistogramBin(1.0, 2.0);
        assertTrue(b1.equals(b2));
        assertTrue(b2.equals(b1));


        b1 = new SimpleHistogramBin(1.1, 2.0, true, true);
        assertFalse(b1.equals(b2));
        b2 = new SimpleHistogramBin(1.1, 2.0, true, true);
        assertTrue(b1.equals(b2));


        b1 = new SimpleHistogramBin(1.1, 2.2, true, true);
        assertFalse(b1.equals(b2));
        b2 = new SimpleHistogramBin(1.1, 2.2, true, true);
        assertTrue(b1.equals(b2));


        b1 = new SimpleHistogramBin(1.1, 2.2, false, true);
        assertFalse(b1.equals(b2));
        b2 = new SimpleHistogramBin(1.1, 2.2, false, true);
        assertTrue(b1.equals(b2));


        b1 = new SimpleHistogramBin(1.1, 2.2, false, false);
        assertFalse(b1.equals(b2));
        b2 = new SimpleHistogramBin(1.1, 2.2, false, false);
        assertTrue(b1.equals(b2));


        b1.setItemCount(99);
        assertFalse(b1.equals(b2));
        b2.setItemCount(99);
        assertTrue(b1.equals(b2));
    }

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    /**
     * Some checks for the clone() method.
     */
    public void testCloning() {
        SimpleHistogramBin b1 = new SimpleHistogramBin(1.1, 2.2, false, true);
        b1.setItemCount(99);
        SimpleHistogramBin b2 = null;
        try {
            b2 = (SimpleHistogramBin) b1.clone();
        }
        catch (CloneNotSupportedException e) {
            System.err.println("Failed to clone.");
        }
        assertTrue(b1 != b2);
        assertTrue(b1.getClass() == b2.getClass());
        assertTrue(b1.equals(b2));


        // check that clone is independent of the original
        b2.setItemCount(111);
        assertFalse(b1.equals(b2));
    }

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


        SimpleHistogramBin b1 = new SimpleHistogramBin(1.0, 2.0, false, true);
        b1.setItemCount(123);
        SimpleHistogramBin b2 = null;
        try {
            ByteArrayOutputStream buffer = new ByteArrayOutputStream();
            ObjectOutput out = new ObjectOutputStream(buffer);
            out.writeObject(b1);
            out.close();

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