Examples of org.jfree.chart.JFreeChart.addSubtitle()

org.jfree.chart.JFreeChart.addSubtitle()
Adds a chart subtitle, and notifies registered listeners that the chart has been modified. @param subtitle the subtitle (null not permitted). @see #getSubtitle(int)

        DefaultPieDataset dataset = new DefaultPieDataset();
        JFreeChart chart = ChartFactory.createPieChart("title", dataset, true, 
                false, false);
        
        TextTitle t0 = new TextTitle("T0");
        chart.addSubtitle(0, t0);
        assertEquals(t0, chart.getSubtitle(0));
        
        TextTitle t1 = new TextTitle("T1");
        chart.addSubtitle(t1);
        assertEquals(t1, chart.getSubtitle(2));  // subtitle 1 is the legend

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        TextTitle t0 = new TextTitle("T0");
        chart.addSubtitle(0, t0);
        assertEquals(t0, chart.getSubtitle(0));
        
        TextTitle t1 = new TextTitle("T1");
        chart.addSubtitle(t1);
        assertEquals(t1, chart.getSubtitle(2));  // subtitle 1 is the legend


        boolean pass = false;
        try {
            chart.addSubtitle(null);

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        chart.addSubtitle(t1);
        assertEquals(t1, chart.getSubtitle(2));  // subtitle 1 is the legend


        boolean pass = false;
        try {
            chart.addSubtitle(null);
        }
        catch (IllegalArgumentException e) {
            pass = true;
        }
        assertTrue(pass);

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        }
        assertTrue(pass);
        
        pass = false;
        try {
            chart.addSubtitle(-1, t0);
        }
        catch (IllegalArgumentException e) {
            pass = true;
        }
        assertTrue(pass);

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        }
        assertTrue(pass);
            
        pass = false;
        try {
            chart.addSubtitle(4, t0);
        }
        catch (IllegalArgumentException e) {
            pass = true;
        }
        assertTrue(pass);

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        chart.setBackgroundPaint( Color.white );
        chart.setBorderVisible( true );
        chart.setBorderPaint( Color.BLACK );
        TextTitle subtitle = new TextTitle("Four datasets and four range axes.");  
        chart.addSubtitle( subtitle );
        XYPlot plot = (XYPlot) chart.getPlot();
        plot.setOrientation(PlotOrientation.VERTICAL);
        plot.setBackgroundPaint(Color.lightGray);
        plot.setDomainGridlinePaint(Color.white);
        plot.setRangeGridlinePaint(Color.white);

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     */
    private static JFreeChart createChart(CategoryDataset dataset) {
        JFreeChart chart = ChartFactory.createBarChart(
            "Performance: JFreeSVG vs Batik", null /* x-axis label*/, 
                "Milliseconds" /* y-axis label */, dataset);
        chart.addSubtitle(new TextTitle("Time to generate 1000 charts in SVG " 
                + "format (lower bars = better performance)"));
        CategoryPlot plot = (CategoryPlot) chart.getPlot();


        NumberAxis rangeAxis = (NumberAxis) plot.getRangeAxis();
        rangeAxis.setStandardTickUnits(NumberAxis.createIntegerTickUnits());

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            "US cents/lb",      // y-axis label
            dataset);


        String fontName = "Palatino";
        chart.getTitle().setFont(new Font(fontName, Font.BOLD, 18));
        chart.addSubtitle(new TextTitle("Source: http://www.ico.org/historical/2010-19/PDF/HIST-PRICES.pdf", 
                new Font(fontName, Font.PLAIN, 14)));


        XYPlot plot = (XYPlot) chart.getPlot();
        plot.setDomainPannable(true);
        plot.setRangePannable(true);

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        TextTitle source = new TextTitle("Source: http://www.bbc.co.uk/news/business-15489523", 
                new Font("Courier New", Font.PLAIN, 12));
        source.setPaint(Color.WHITE);
        source.setPosition(RectangleEdge.BOTTOM);
        source.setHorizontalAlignment(HorizontalAlignment.RIGHT);
        chart.addSubtitle(source);
        return chart;


    }


    /**

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      chart.removeLegend();
      // chart.addSubtitle(new TextTitle(""));
      LegendTitle legend = new LegendTitle(plot);
      legend.setFrame(new BlockBorder());
      legend.setPosition(RectangleEdge.BOTTOM);
      chart.addSubtitle(legend);
      
      // generate jpeg
      
      ByteArrayOutputStream bos = new ByteArrayOutputStream();
      ChartUtilities.writeChartAsJPEG(bos, chart, 2400, 400);

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