Java XYSeriesCollection.setIntervalWidth方法代码示例

import org.jfree.data.xy.XYSeriesCollection; //导入方法依赖的package包/类
/**
 * Tests the the lower and upper margin settings produce the expected results.
 */
public void testAxisMargins() {
    XYSeries series = new XYSeries("S1");
    series.add(100.0, 1.1);
    series.add(200.0, 2.2);
    XYSeriesCollection dataset = new XYSeriesCollection(series);
    dataset.setIntervalWidth(0.0);
    JFreeChart chart = ChartFactory.createScatterPlot(
        "Title", "X", "Y", dataset, PlotOrientation.VERTICAL, false, false, false
    );
    ValueAxis domainAxis = chart.getXYPlot().getDomainAxis();
    Range r = domainAxis.getRange();
    assertTrue(NumberUtils.equal(110.0, r.getLength()));
    domainAxis.setLowerMargin(0.10);
    domainAxis.setUpperMargin(0.10);
    r = domainAxis.getRange();
    assertTrue(NumberUtils.equal(120.0, r.getLength()));
}
 

import org.jfree.data.xy.XYSeriesCollection; //导入方法依赖的package包/类
/**
 * Creates a dataset for testing.
 * 
 * @return A dataset.
 */
private XYDataset createXYDataset1() {
    XYSeries series1 = new XYSeries("S1");
    series1.add(1.0, 100.0);
    series1.add(2.0, 101.0);
    series1.add(3.0, 102.0);
    XYSeries series2 = new XYSeries("S2");
    series2.add(1.0, 103.0);
    series2.add(2.0, null);
    series2.add(3.0, 105.0);
    XYSeriesCollection result = new XYSeriesCollection();
    result.addSeries(series1);
    result.addSeries(series2);
    result.setIntervalWidth(0.0);
    return result;
}
 

import org.jfree.data.xy.XYSeriesCollection; //导入方法依赖的package包/类
/**
 * Tests the the lower and upper margin settings produce the expected 
 * results.
 */
public void testAxisMargins() {
    XYSeries series = new XYSeries("S1");
    series.add(100.0, 1.1);
    series.add(200.0, 2.2);
    XYSeriesCollection dataset = new XYSeriesCollection(series);
    dataset.setIntervalWidth(0.0);
    JFreeChart chart = ChartFactory.createScatterPlot(
        "Title", "X", "Y", dataset, PlotOrientation.VERTICAL, 
        false, false, false
    );
    ValueAxis domainAxis = ((XYPlot) chart.getPlot()).getDomainAxis();
    Range r = domainAxis.getRange();
    assertEquals(110.0, r.getLength(), EPSILON);
    domainAxis.setLowerMargin(0.10);
    domainAxis.setUpperMargin(0.10);
    r = domainAxis.getRange();
    assertEquals(120.0, r.getLength(), EPSILON);
}
 

import org.jfree.data.xy.XYSeriesCollection; //导入方法依赖的package包/类
/**
 * @param valueSource
 * @param plotInstance
 * @param autoWidthFraction
 *            If this value is greater than 0, an auto width for the intervals is calculated
 *            such that the intervals nearest to each other touch. This value is then multiplied
 *            with the value of autoWidthFtraction. If unset, the intervals have width 0.
 * @param allowDuplicates
 * @param sortByDomain
 *            if true, the data is sorted by domain values (useful for bar and area charts)
 * @return
 * @throws ChartPlottimeException
 */
public static XYSeriesCollection createXYSeriesCollection(ValueSource valueSource, PlotInstance plotInstance,
		double autoWidthFraction, boolean allowDuplicates, boolean sortByDomain) throws ChartPlottimeException {
	XYSeriesCollection xyDataset = new XYSeriesCollection();
	if (autoWidthFraction > 0) {
		xyDataset.setAutoWidth(true);
	} else {
		xyDataset.setAutoWidth(false);
		xyDataset.setIntervalWidth(0);
	}

	ValueSourceData valueSourceData = plotInstance.getPlotData().getValueSourceData(valueSource);
	assertMaxValueCountNotExceededOrThrowException(valueSourceData);
	GroupCellSeriesData dataForAllGroupCells = valueSourceData.getSeriesDataForAllGroupCells();

	// Loop over group cells and add data to dataset
	for (GroupCellKeyAndData groupCellKeyAndData : dataForAllGroupCells) {
		GroupCellKey groupCellKey = groupCellKeyAndData.getKey();
		GroupCellData groupCellData = groupCellKeyAndData.getData();

		String seriesName = generateSeriesName(valueSource, groupCellKey,
				plotInstance.getCurrentPlotConfigurationClone());

		XYSeries series = new XYSeries(seriesName, sortByDomain, allowDuplicates);
		Map<PlotDimension, double[]> dataForUsageType = groupCellData.getDataForUsageType(SeriesUsageType.MAIN_SERIES);
		int rowCount = dataForUsageType.get(PlotDimension.DOMAIN).length;
		double[] xValues = dataForUsageType.get(PlotDimension.DOMAIN);
		double[] yValues = dataForUsageType.get(PlotDimension.VALUE);

		try {
			// Loop over rows and add data to series
			for (int row = 0; row < rowCount; ++row) {
				double x = xValues[row];
				double y = yValues[row];
				if (!Double.isNaN(x)) {
					series.add(x, y);
				}

			}
		} catch (SeriesException e) {
			throw new ChartPlottimeException("duplicate_value", valueSource.toString(), PlotDimension.DOMAIN.getName());
		}

		xyDataset.addSeries(series);
	}
	// intervals should not touch each other, so decrease auto width.
	if (xyDataset.getIntervalWidth() > 0) {
		xyDataset.setIntervalWidth(xyDataset.getIntervalWidth() * autoWidthFraction);
	}
	return xyDataset;
}