Examples of org.jfree.chart.plot.XYPlot.removeAnnotation()

org.jfree.chart.plot.XYPlot.removeAnnotation()
Removes an annotation from the plot and sends a {@link PlotChangeEvent}to all registered listeners. @param annotation the annotation (null not permitted). @return A boolean (indicates whether or not the annotation was removed). @see #addAnnotation(XYAnnotation) @see #getAnnotations()

        XYTextAnnotation a2 = new XYTextAnnotation("X", 3.0, 4.0);
        XYTextAnnotation a3 = new XYTextAnnotation("X", 1.0, 2.0);
        plot.addAnnotation(a1);
        plot.addAnnotation(a2);
        plot.addAnnotation(a3);
        plot.removeAnnotation(a2);
        XYTextAnnotation x = (XYTextAnnotation) plot.getAnnotations().get(0);
        assertEquals(x, a1);


        // now remove a3, but since a3.equals(a1), this will in fact remove
        // a1...

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        assertEquals(x, a1);


        // now remove a3, but since a3.equals(a1), this will in fact remove
        // a1...
        assertTrue(a1.equals(a3));
        plot.removeAnnotation(a3);  // actually removes a1
        x = (XYTextAnnotation) plot.getAnnotations().get(0);
        assertEquals(x, a3);
    }


    /**

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        XYTextAnnotation a2 = new XYTextAnnotation("X", 3.0, 4.0);
        XYTextAnnotation a3 = new XYTextAnnotation("X", 1.0, 2.0);
        plot.addAnnotation(a1);
        plot.addAnnotation(a2);
        plot.addAnnotation(a3);
        plot.removeAnnotation(a2);
        XYTextAnnotation x = (XYTextAnnotation) plot.getAnnotations().get(0);
        assertEquals(x, a1);


        // now remove a3, but since a3.equals(a1), this will in fact remove
        // a1...

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        assertEquals(x, a1);


        // now remove a3, but since a3.equals(a1), this will in fact remove
        // a1...
        assertTrue(a1.equals(a3));
        plot.removeAnnotation(a3);  // actually removes a1
        x = (XYTextAnnotation) plot.getAnnotations().get(0);
        assertEquals(x, a3);
    }


    /**

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        XYTextAnnotation a2 = new XYTextAnnotation("X", 3.0, 4.0);
        XYTextAnnotation a3 = new XYTextAnnotation("X", 1.0, 2.0);
        plot.addAnnotation(a1);
        plot.addAnnotation(a2);
        plot.addAnnotation(a3);
        plot.removeAnnotation(a2);
        XYTextAnnotation x = (XYTextAnnotation) plot.getAnnotations().get(0);
        assertEquals(x, a1);


        // now remove a3, but since a3.equals(a1), this will in fact remove
        // a1...

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        assertEquals(x, a1);


        // now remove a3, but since a3.equals(a1), this will in fact remove
        // a1...
        assertTrue(a1.equals(a3));
        plot.removeAnnotation(a3);  // actually removes a1
        x = (XYTextAnnotation) plot.getAnnotations().get(0);
        assertEquals(x, a3);
    }


    /**

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        XYTextAnnotation a2 = new XYTextAnnotation("X", 3.0, 4.0);
        XYTextAnnotation a3 = new XYTextAnnotation("X", 1.0, 2.0);
        plot.addAnnotation(a1);
        plot.addAnnotation(a2);
        plot.addAnnotation(a3);
        plot.removeAnnotation(a2);
        XYTextAnnotation x = (XYTextAnnotation) plot.getAnnotations().get(0);
        assertEquals(x, a1);
        
        // now remove a3, but since a3.equals(a1), this will in fact remove 
        // a1...

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        assertEquals(x, a1);
        
        // now remove a3, but since a3.equals(a1), this will in fact remove 
        // a1...
        assertTrue(a1.equals(a3));
        plot.removeAnnotation(a3);  // actually removes a1
        x = (XYTextAnnotation) plot.getAnnotations().get(0);
        assertEquals(x, a3); 
    }
    
    /**

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