JFreeChart with truncated data points

Question

I have created a JFreeChart with the code below, but the Y-Axis marks are truncated. How should I display the chart even though the data points are overlapped in the Y-Axis? Bas

Answer 1

This is my current approach on the chart how data is being rendered...

private static JFreeChart buildChart(TimeSeriesCollection dataset,
    String title, boolean endPoints) throws IOException {
// Create the chart
    JFreeChart chart0 = ChartFactory.createTimeSeriesChart(
        title,
        "Hour", "Count",
        dataset,
        true,
        true,
        false);

// Setup the appearance of the chart

    chart0.setBackgroundPaint(Color.white);
    XYPlot plot = (XYPlot) chart0.getXYPlot();
    plot.getDomainAxis().setAutoRange(true);
    plot.getRangeAxis().setRange(1.0, SucMaxi);
    plot.setBackgroundPaint(Color.lightGray);
    plot.setDomainGridlinePaint(Color.white);
    plot.setRangeGridlinePaint(Color.white);
    plot.getAxisOffset();
    plot.setAxisOffset(new RectangleInsets(10.0, 10.0, 10.0, 10.0));
    plot.setDomainCrosshairVisible(true);
    plot.setRangeCrosshairVisible(true);

// Display data points or just the lines?

    if (endPoints) {
        XYItemRenderer renderer = plot.getRenderer();
        if (renderer instanceof StandardXYItemRenderer) {
            StandardXYItemRenderer rr = (StandardXYItemRenderer) renderer;
            rr.setBaseShapesVisible(true);
            rr.setBaseShapesFilled(true);
            rr.setDrawSeriesLineAsPath(true);
            rr.setSeriesPaint(0, Color.blue.brighter());
            rr.setSeriesVisible(0, true); // default
            rr.setSeriesVisibleInLegend(0, true);  // default      
        }
    }

// Tell the chart how we would like dates to read

    DateAxis axis = (DateAxis) plot.getDomainAxis();

// Tick the X Axis by unit tick 1 hour
    axis.setTickUnit(new DateTickUnit(DateTickUnitType.HOUR, 1));
    axis.setDateFormatOverride(new SimpleDateFormat("HH:mm"));

    try {
        ChartUtilities.saveChartAsJPEG(
            new File("suc.jpg"), 1.0f, chart0, 1000, 700);
    } catch (IOException e) {
        e.printStackTrace();
    }

    return chart0;
}