Examples of org.jfree.chart.axis.DateAxis

org.jfree.chart.axis.DateAxis
The base class for axes that display dates. You will find it easier to understand how this axis works if you bear in mind that it really displays/measures integer (or long) data, where the integers are milliseconds since midnight, 1-Jan-1970. When displaying tick labels, the millisecond values are converted back to dates using a DateFormat instance.
You can also create a {@link org.jfree.chart.axis.Timeline} and supply inthe constructor to create an axis that only contains certain domain values. For example, this allows you to create a date axis that only contains working days.

    /**
     * Confirm that the equals method can distinguish all the required fields.
     */
    public void testEquals() {


        DateAxis a1 = new DateAxis("Test");
        DateAxis a2 = new DateAxis("Test");
        assertTrue(a1.equals(a2));
        assertFalse(a1.equals(null));
        assertFalse(a1.equals("Some non-DateAxis object"));


        // tickUnit
        a1.setTickUnit(new DateTickUnit(DateTickUnit.DAY, 7));
        assertFalse(a1.equals(a2));
        a2.setTickUnit(new DateTickUnit(DateTickUnit.DAY, 7));
        assertTrue(a1.equals(a2));


        // dateFormatOverride
        a1.setDateFormatOverride(new SimpleDateFormat("yyyy"));
        assertFalse(a1.equals(a2));
        a2.setDateFormatOverride(new SimpleDateFormat("yyyy"));
        assertTrue(a1.equals(a2));


        // tickMarkPosition
        a1.setTickMarkPosition(DateTickMarkPosition.END);
        assertFalse(a1.equals(a2));
        a2.setTickMarkPosition(DateTickMarkPosition.END);
        assertTrue(a1.equals(a2));


        // timeline
        a1.setTimeline(SegmentedTimeline.newMondayThroughFridayTimeline());
        assertFalse(a1.equals(a2));
        a2.setTimeline(SegmentedTimeline.newMondayThroughFridayTimeline());
        assertTrue(a1.equals(a2));


    }

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    /**
     * A test for bug report 1472942.  The DateFormat.equals() method is not
     * checking the range attribute.
     */
    public void test1472942() {
        DateAxis a1 = new DateAxis("Test");
        DateAxis a2 = new DateAxis("Test");
        assertTrue(a1.equals(a2));


        // range
        a1.setRange(new Date(1L), new Date(2L));
        assertFalse(a1.equals(a2));
        a2.setRange(new Date(1L), new Date(2L));
        assertTrue(a1.equals(a2));
    }

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    /**
     * Two objects that are equal are required to return the same hashCode.
     */
    public void testHashCode() {
        DateAxis a1 = new DateAxis("Test");
        DateAxis a2 = new DateAxis("Test");
        assertTrue(a1.equals(a2));
        int h1 = a1.hashCode();
        int h2 = a2.hashCode();
        assertEquals(h1, h2);
    }

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    /**
     * Confirm that cloning works.
     */
    public void testCloning() {
        DateAxis a1 = new DateAxis("Test");
        DateAxis a2 = null;
        try {
            a2 = (DateAxis) a1.clone();
        }
        catch (CloneNotSupportedException e) {
            e.printStackTrace();
        }
        assertTrue(a1 != a2);
        assertTrue(a1.getClass() == a2.getClass());
        assertTrue(a1.equals(a2));
    }

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    /**
     * Test that the setRange() method works.
     */
    public void testSetRange() {


        DateAxis axis = new DateAxis("Test Axis");
        Calendar calendar = Calendar.getInstance();
        calendar.set(1999, Calendar.JANUARY, 3);
        Date d1 = calendar.getTime();
        calendar.set(1999, Calendar.JANUARY, 31);
        Date d2 = calendar.getTime();
        axis.setRange(d1, d2);


        DateRange range = (DateRange) axis.getRange();
        assertEquals(d1, range.getLowerDate());
        assertEquals(d2, range.getUpperDate());


    }

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    /**
     * Test that the setMaximumDate() method works.
     */
    public void testSetMaximumDate() {
        DateAxis axis = new DateAxis("Test Axis");
        Date date = new Date();
        axis.setMaximumDate(date);
        assertEquals(date, axis.getMaximumDate());


        // check that setting the max date to something on or before the
        // current min date works...
        Date d1 = new Date();
        Date d2 = new Date(d1.getTime() + 1);
        Date d0 = new Date(d1.getTime() - 1);
        axis.setMaximumDate(d2);
        axis.setMinimumDate(d1);
        axis.setMaximumDate(d1);
        assertEquals(d0, axis.getMinimumDate());
    }

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    /**
     * Test that the setMinimumDate() method works.
     */
    public void testSetMinimumDate() {
        DateAxis axis = new DateAxis("Test Axis");
        Date d1 = new Date();
        Date d2 = new Date(d1.getTime() + 1);
        axis.setMaximumDate(d2);
        axis.setMinimumDate(d1);
        assertEquals(d1, axis.getMinimumDate());


        // check that setting the min date to something on or after the
        // current min date works...
        Date d3 = new Date(d2.getTime() + 1);
        axis.setMinimumDate(d2);
        assertEquals(d3, axis.getMaximumDate());
    }

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    /**
     * Test the translation of Java2D values to data values.
     */
    public void testJava2DToValue() {
        DateAxis axis = new DateAxis();
        axis.setRange(50.0, 100.0);
        Rectangle2D dataArea = new Rectangle2D.Double(10.0, 50.0, 400.0, 300.0);
        double y1 = axis.java2DToValue(75.0, dataArea, RectangleEdge.LEFT);
        assertTrue(same(y1, 95.8333333, 1.0));
        double y2 = axis.java2DToValue(75.0, dataArea, RectangleEdge.RIGHT);
        assertTrue(same(y2, 95.8333333, 1.0));
        double x1 = axis.java2DToValue(75.0, dataArea, RectangleEdge.TOP);
        assertTrue(same(x1, 58.125, 1.0));
        double x2 = axis.java2DToValue(75.0, dataArea, RectangleEdge.BOTTOM);
        assertTrue(same(x2, 58.125, 1.0));
        axis.setInverted(true);
        double y3 = axis.java2DToValue(75.0, dataArea, RectangleEdge.LEFT);
        assertTrue(same(y3, 54.1666667, 1.0));
        double y4 = axis.java2DToValue(75.0, dataArea, RectangleEdge.RIGHT);
        assertTrue(same(y4, 54.1666667, 1.0));
        double x3 = axis.java2DToValue(75.0, dataArea, RectangleEdge.TOP);
        assertTrue(same(x3, 91.875, 1.0));
        double x4 = axis.java2DToValue(75.0, dataArea, RectangleEdge.BOTTOM);
        assertTrue(same(x4, 91.875, 1.0));
    }

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


        DateAxis a1 = new DateAxis("Test Axis");
        DateAxis a2 = null;


        try {
            ByteArrayOutputStream buffer = new ByteArrayOutputStream();
            ObjectOutput out = new ObjectOutputStream(buffer);
            out.writeObject(a1);

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     * A test to reproduce bug 2201869.
     */
    public void testBug2201869() {
        TimeZone tz = TimeZone.getTimeZone("GMT");
        GregorianCalendar c = new GregorianCalendar(tz, Locale.UK);
        DateAxis axis = new DateAxis("Date", tz, Locale.UK);
        SimpleDateFormat sdf = new SimpleDateFormat("d-MMM-yyyy", Locale.UK);
        sdf.setCalendar(c);
        axis.setTickUnit(new DateTickUnit(DateTickUnit.MONTH, 1, sdf));
        Day d1 = new Day(1, 3, 2008);
        d1.peg(c);
        Day d2 = new Day(30, 6, 2008);
        d2.peg(c);
        axis.setRange(d1.getStart(), d2.getEnd());
        BufferedImage image = new BufferedImage(200, 100,
                BufferedImage.TYPE_INT_ARGB);
        Graphics2D g2 = image.createGraphics();
        Rectangle2D area = new Rectangle2D.Double(0.0, 0.0, 200, 100);
        axis.setTickMarkPosition(DateTickMarkPosition.END);
        List ticks = axis.refreshTicks(g2, new AxisState(), area,
                RectangleEdge.BOTTOM);
        assertEquals(3, ticks.size());
        DateTick t1 = (DateTick) ticks.get(0);
        assertEquals("31-Mar-2008", t1.getText());
        DateTick t2 = (DateTick) ticks.get(1);
        assertEquals("30-Apr-2008", t2.getText());
        DateTick t3 = (DateTick) ticks.get(2);
        assertEquals("31-May-2008", t3.getText());


        // now repeat for a vertical axis
        ticks = axis.refreshTicks(g2, new AxisState(), area,
                RectangleEdge.LEFT);
        assertEquals(3, ticks.size());
        t1 = (DateTick) ticks.get(0);
        assertEquals("31-Mar-2008", t1.getText());
        t2 = (DateTick) ticks.get(1);

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