第二系列的商品宽度太宽 [英] Width of item in second series too wide
本文介绍了第二系列的商品宽度太宽的处理方法，对大家解决问题具有一定的参考价值，需要的朋友们下面随着小编来一起学习吧！
问题描述
我试图在一个图表/seriesCollection中显示2个OHLCSeries.第一个系列似乎还可以，但是在第二个中，有些项目的宽度很奇怪.看图片:
I am trying to show 2 OHLCSeries in one chart/seriesCollection. The first series seems to be OK but in the secord there are item(s) with weird width. Look the pic:
问题可能出在系列中-第一个系列有20个项目，而第二个系列只有1个.
Maybe the problem comes from count of item in series - 1st series has 20 items and the 2nd series just 1.
这是完整的应用代码:
import java.awt.Dimension;
import java.text.SimpleDateFormat;
import javax.swing.JFrame;
import javax.swing.JPanel;
import org.jfree.chart.ChartFactory;
import org.jfree.chart.ChartPanel;
import org.jfree.chart.JFreeChart;
import org.jfree.chart.axis.AxisLocation;
import org.jfree.chart.axis.DateAxis;
import org.jfree.chart.axis.DateTickMarkPosition;
import org.jfree.chart.axis.DateTickUnit;
import org.jfree.chart.axis.NumberAxis;
import org.jfree.chart.plot.PlotOrientation;
import org.jfree.chart.renderer.xy.CandlestickRenderer;
import org.jfree.data.time.Minute;
import org.jfree.data.time.ohlc.OHLCSeries;
import org.jfree.data.time.ohlc.OHLCSeriesCollection;
public class sample8 {
private ChartPanel chartPanel;
private JFreeChart chart;
private final OHLCSeriesCollection seriesCollection = new OHLCSeriesCollection();
public sample8() {
chart = ChartFactory.createCandlestickChart(null, "Time", "Price", seriesCollection, false);
chart.getXYPlot().setOrientation(PlotOrientation.VERTICAL);
chart.setAntiAlias(false);
// renderer
CandlestickRenderer renderer = new CandlestickRenderer();
chart.getXYPlot().setRenderer(renderer);
// Y-axis
chart.getXYPlot().setRangeAxisLocation(AxisLocation.TOP_OR_RIGHT);
NumberAxis numberAxis = (NumberAxis) chart.getXYPlot().getRangeAxis();
numberAxis.setAutoRangeIncludesZero(false);
numberAxis.setAutoRangeStickyZero(false);
// X-axis
DateAxis dateAxis = (DateAxis) chart.getXYPlot().getDomainAxis();
dateAxis.setDateFormatOverride(new SimpleDateFormat("HH:mm"));
dateAxis.setTickUnit(new DateTickUnit(DateTickUnit.MINUTE, 1), true, true);
dateAxis.setTickMarkPosition(DateTickMarkPosition.MIDDLE);
// chartPanel
chartPanel = new ChartPanel(chart);
chartPanel.getChartRenderingInfo().setEntityCollection(null);
chartPanel.setPreferredSize(new Dimension(1000, 500));
// series
addSeries1();
addSeries2();
}
private void addSeries1() {
OHLCSeries series = new OHLCSeries("");
series.add(new Minute(0, 12, 1, 1, 2014), 97.23D, 98.47D, 97.15D, 97.43);
series.add(new Minute(1, 12, 1, 1, 2014), 96.47D, 98.81D, 96.27D, 97.49);
series.add(new Minute(2, 12, 1, 1, 2014), 95.88D, 96.87D, 96.11D, 96.75);
series.add(new Minute(3, 12, 1, 1, 2014), 96.05D, 96.94D, 95.89D, 96.59);
series.add(new Minute(4, 12, 1, 1, 2014), 95.92D, 97.00D, 95.69D, 96.92);
series.add(new Minute(5, 12, 1, 1, 2014), 96.34D, 96.71D, 95.68D, 96.70);
series.add(new Minute(6, 12, 1, 1, 2014), 96.65D, 96.87D, 94.91D, 96.38);
series.add(new Minute(7, 12, 1, 1, 2014), 97.75D, 98.20D, 96.90D, 97.24);
series.add(new Minute(8, 12, 1, 1, 2014), 97.72D, 98.47D, 97.35D, 97.64);
series.add(new Minute(9, 12, 1, 1, 2014), 98.30D, 98.77D, 97.56D, 97.99);
series.add(new Minute(10, 12, 1, 1, 2014), 100.09D, 99.79D, 99.17D, 99.25);
series.add(new Minute(11, 12, 1, 1, 2014), 100.39D, 100.24D, 99.66D, 100.13);
series.add(new Minute(12, 12, 1, 1, 2014), 97.99D, 98.63D, 97.67D, 98.54);
series.add(new Minute(13, 12, 1, 1, 2014), 99.33D, 99.37D, 97.96D, 98.34);
series.add(new Minute(14, 12, 1, 1, 2014), 98.00D, 98.16D, 97.17D, 97.52);
series.add(new Minute(15, 12, 1, 1, 2014), 98.77D, 97.92D, 97.37D, 97.70);
series.add(new Minute(16, 12, 1, 1, 2014), 97.33D, 97.94D, 97.15D, 97.67);
series.add(new Minute(17, 12, 1, 1, 2014), 99.59D, 98.33D, 97.89D, 98.22);
series.add(new Minute(18, 12, 1, 1, 2014), 96.67D, 97.09D, 95.66D, 97.07);
series.add(new Minute(19, 12, 1, 1, 2014), 96.65D, 97.58D, 96.79D, 97.00);
seriesCollection.addSeries(series);
}
private void addSeries2() {
OHLCSeries series = new OHLCSeries("");
series.add(new Minute(0, 12, 1, 1, 2014), 96D, 96.5D, 95.5D, 96.2D);
seriesCollection.addSeries(series);
}
public ChartPanel getChartPanel() {
return chartPanel;
}
public static void main(String[] args) {
sample8 app = new sample8();
JFrame frame = new JFrame("sample8");
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
JPanel panel = new JPanel();
panel.add(app.getChartPanel());
frame.add(panel);
frame.pack();
frame.setLocationRelativeTo(null);
frame.setVisible(true);
}
}
为什么JFreeChart不能将所有项目的宽度自动设置为相同?
推荐答案
You may want to experiment with setAutoWidthMethod() and WIDTHMETHOD_SMALLEST. Two items appear to be a minimum; five are shown below in series "Two".
CandlestickRenderer r = (CandlestickRenderer) chart.getXYPlot().getRenderer();
r.setAutoWidthMethod(CandlestickRenderer.WIDTHMETHOD_SMALLEST);
此外，
-
仅在当您真的想覆盖
getPreferredSize()时，请不要使用setPreferredSize()，如此处所述.Don't use
setPreferredSize()when you really mean to overridegetPreferredSize(), as discussed here.如此处所述，
DateTickUnit已过时；使用DateTickUnitType代替.As noted here,
DateTickUnitis deprecated; useDateTickUnitTypeinstead.经测试:
import java.awt.Dimension; import java.awt.EventQueue; import java.text.SimpleDateFormat; import javax.swing.JFrame; import org.jfree.chart.ChartFactory; import org.jfree.chart.ChartPanel; import org.jfree.chart.JFreeChart; import org.jfree.chart.axis.DateAxis; import org.jfree.chart.axis.DateTickMarkPosition; import org.jfree.chart.axis.DateTickUnit; import org.jfree.chart.axis.DateTickUnitType; import org.jfree.chart.axis.NumberAxis; import org.jfree.chart.plot.PlotOrientation; import org.jfree.chart.renderer.xy.CandlestickRenderer; import org.jfree.data.time.Minute; import org.jfree.data.time.ohlc.OHLCSeries; import org.jfree.data.time.ohlc.OHLCSeriesCollection; /** @see https://stackoverflow.com/a/27611246/230513 */ public class Sample8 { private final ChartPanel chartPanel; private final OHLCSeriesCollection seriesCollection = new OHLCSeriesCollection(); public Sample8() { JFreeChart chart = ChartFactory.createCandlestickChart( "Sample8", "Time", "Price", seriesCollection, true); chart.getXYPlot().setOrientation(PlotOrientation.VERTICAL); CandlestickRenderer r = (CandlestickRenderer) chart.getXYPlot().getRenderer(); r.setAutoWidthMethod(CandlestickRenderer.WIDTHMETHOD_SMALLEST); // Y-axis NumberAxis numberAxis = (NumberAxis) chart.getXYPlot().getRangeAxis(); numberAxis.setAutoRangeIncludesZero(false); numberAxis.setAutoRangeStickyZero(false); // X-axis DateAxis dateAxis = (DateAxis) chart.getXYPlot().getDomainAxis(); dateAxis.setDateFormatOverride(new SimpleDateFormat("HH:mm")); dateAxis.setTickUnit(new DateTickUnit(DateTickUnitType.MINUTE, 1)); dateAxis.setTickMarkPosition(DateTickMarkPosition.MIDDLE); // chartPanel chartPanel = new ChartPanel(chart){ @Override public Dimension getPreferredSize() { return new Dimension(800, 400); } }; // series addSeries1(); addSeries2(); } private void addSeries1() { OHLCSeries series = new OHLCSeries("One"); series.add(new Minute(0, 12, 1, 1, 2014), 97.23D, 98.47D, 97.15D, 97.43); series.add(new Minute(1, 12, 1, 1, 2014), 96.47D, 98.81D, 96.27D, 97.49); series.add(new Minute(2, 12, 1, 1, 2014), 95.88D, 96.87D, 96.11D, 96.75); series.add(new Minute(3, 12, 1, 1, 2014), 96.05D, 96.94D, 95.89D, 96.59); series.add(new Minute(4, 12, 1, 1, 2014), 95.92D, 97.00D, 95.69D, 96.92); series.add(new Minute(5, 12, 1, 1, 2014), 96.34D, 96.71D, 95.68D, 96.70); series.add(new Minute(6, 12, 1, 1, 2014), 96.65D, 96.87D, 94.91D, 96.38); series.add(new Minute(7, 12, 1, 1, 2014), 97.75D, 98.20D, 96.90D, 97.24); series.add(new Minute(8, 12, 1, 1, 2014), 97.72D, 98.47D, 97.35D, 97.64); series.add(new Minute(9, 12, 1, 1, 2014), 98.30D, 98.77D, 97.56D, 97.99); seriesCollection.addSeries(series); } private void addSeries2() { OHLCSeries series = new OHLCSeries("Two"); series.add(new Minute(0, 12, 1, 1, 2014), 96D, 96.5D, 95.5D, 96.2D); series.add(new Minute(1, 12, 1, 1, 2014), 100.39D, 100.24D, 99.66D, 100.13); series.add(new Minute(2, 12, 1, 1, 2014), 97.99D, 98.63D, 97.67D, 98.54); series.add(new Minute(3, 12, 1, 1, 2014), 99.33D, 99.37D, 97.96D, 98.34); series.add(new Minute(4, 12, 1, 1, 2014), 98.00D, 98.16D, 97.17D, 97.52); // series.add(new Minute(5, 12, 1, 1, 2014), 98.77D, 97.92D, 97.37D, 97.70); // series.add(new Minute(6, 12, 1, 1, 2014), 97.33D, 97.94D, 97.15D, 97.67); // series.add(new Minute(7, 12, 1, 1, 2014), 99.59D, 98.33D, 97.89D, 98.22); // series.add(new Minute(8, 12, 1, 1, 2014), 96.67D, 97.09D, 95.66D, 97.07); // series.add(new Minute(9, 12, 1, 1, 2014), 96.65D, 97.58D, 96.79D, 97.00); seriesCollection.addSeries(series); } public ChartPanel getChartPanel() { return chartPanel; } public static void main(String[] args) { EventQueue.invokeLater(new Runnable() { @Override public void run() { Sample8 app = new Sample8(); JFrame frame = new JFrame(); frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE); frame.add(app.getChartPanel()); frame.pack(); frame.setLocationRelativeTo(null); frame.setVisible(true); } }); } }这篇关于第二系列的商品宽度太宽的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！
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