Java ValueAxis.setLowerMargin方法代碼示例

import org.jfree.chart.axis.ValueAxis; //導入方法依賴的package包/類
private void plotSeperate(XYDataset dataset, String p)
  {
  	NumberAxis rangeAxis1 = new NumberAxis(p);
rangeAxis1.setAutoRangeIncludesZero(false);     // override default
rangeAxis1.setLowerMargin(0.40);                // to leave room for volume bars
DecimalFormat format = new DecimalFormat("0");
rangeAxis1.setNumberFormatOverride(format);

final ValueAxis timeAxis = new DateAxis("Date");
timeAxis.setLowerMargin(0.02);                  // reduce the default margins
timeAxis.setUpperMargin(0.02);

XYPlot plot = new XYPlot(dataset, timeAxis, rangeAxis1, null);

XYItemRenderer renderer1 = new XYLineAndShapeRenderer(true, false);
renderer1.setBaseToolTipGenerator(
    new StandardXYToolTipGenerator(
        StandardXYToolTipGenerator.DEFAULT_TOOL_TIP_FORMAT,
        new SimpleDateFormat("d-MMM-yyyy"), new DecimalFormat("0.00#")
    )
);
plot.setRenderer(0, renderer1);

final CombinedDomainXYPlot cplot1 = (CombinedDomainXYPlot)this.candlestickChart.getPlot();
if (plot != null) cplot1.add(plot, 1);      // weight is 1.
  }
 

import org.jfree.chart.axis.ValueAxis; //導入方法依賴的package包/類
/**
 * 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.chart.axis.ValueAxis; //導入方法依賴的package包/類
/**
 * 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.chart.axis.ValueAxis; //導入方法依賴的package包/類
/**
 * Creates a chart.
 * 
 * @param dataset  a dataset.
 * 
 * @return A chart.
 */
private static JFreeChart createChart(XYDataset dataset) {

    JFreeChart chart = ChartFactory.createTimeSeriesChart(
        "Legal & General Unit Trust Prices",  // title
        "Date",             // x-axis label
        "Price Per Unit",   // y-axis label
        dataset,            // data
        false,               // create legend?
        true,               // generate tooltips?
        false               // generate URLs?
    );

    chart.setBackgroundPaint(Color.white);

    XYPlot plot = (XYPlot) chart.getPlot();
    plot.setBackgroundPaint(Color.lightGray);
    plot.setDomainGridlinePaint(Color.white);
    plot.setRangeGridlinePaint(Color.white);
    plot.setAxisOffset(new RectangleInsets(5.0, 5.0, 5.0, 5.0));
    plot.setDomainCrosshairVisible(true);
    plot.setRangeCrosshairVisible(true);

    LegendTitle lt = new LegendTitle(plot);
    lt.setItemFont(new Font("Dialog", Font.PLAIN, 9));
    lt.setBackgroundPaint(new Color(200, 200, 255, 100));
    lt.setBorder(new BlockBorder(Color.white));
    lt.setPosition(RectangleEdge.BOTTOM);
    XYTitleAnnotation ta = new XYTitleAnnotation(0.98, 0.02, lt, 
            RectangleAnchor.BOTTOM_RIGHT);
    
    ta.setMaxWidth(0.48);
    plot.addAnnotation(ta);

    XYItemRenderer r = plot.getRenderer();
    if (r instanceof XYLineAndShapeRenderer) {
        XYLineAndShapeRenderer renderer = (XYLineAndShapeRenderer) r;
        renderer.setBaseShapesVisible(true);
        renderer.setBaseShapesFilled(true);
    }
    
    DateAxis axis = (DateAxis) plot.getDomainAxis();
    axis.setDateFormatOverride(new SimpleDateFormat("MMM-yyyy"));
    
    ValueAxis yAxis = plot.getRangeAxis();
    yAxis.setLowerMargin(0.35);
    return chart;

}