在JFreeChart中如何获取图表上特定点的[x,y]值？

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英文:

In JFreeChart how to get the [x,y] values of a certain point on the chart?

问题

以下是您提供的代码的翻译部分：

这个问题与我的之前的问题有关 [ [https://stackoverflow.com/questions/64148281/how-to-display-volume-in-the-domain-crosshair-and-set-the-crosshair-programmatic][1] ]，在@trashgod的帮助下，我得到了大部分问题的答案，但仍有一个问题没有答案，这里我将以不同的角度提问这个问题。

在我的Swing应用程序中，有一个日期列表和一些数据，当我点击某个日期时，我希望我的应用程序显示一个图表并指向该日期的点，这样当图像显示出来时，我就不必移动鼠标来查找和显示该日期的信息。因此，应用程序的屏幕截图如下所示。

[![enter image description here][2]][2]

正如您从顶部的屏幕截图中可以看到的那样，如果我在日期列表上点击2020-07-29，图表将加载，并且十字线将自动聚焦在2020-07-29上，并且相关信息将自动显示出来。在底部的屏幕截图中，如果我点击日期2020-08-11，图表图像将加载，并且鼠标将设置在2020-08-11上，因此作为用户，我不必在图像上搜索并找到该日期的数据。

我简化后的应用程序如下：

// ...（略去导入部分）

public class PriceVolume_Chart extends JPanel implements ChartMouseListener
{
  // ...（略去其它代码）

  @Override
  public void chartMouseClicked(ChartMouseEvent event)
  {
    // 忽略
  }

  public void chartMouseMoved(ChartMouseEvent cmevent)
  {
    ChartEntity chartentity=cmevent.getEntity();
    if (chartentity instanceof XYItemEntity)
    {
      XYItemEntity e=(XYItemEntity)chartentity;
      XYDataset d=e.getDataset();
      int s=e.getSeriesIndex();
      int i=e.getItem();
      double x=d.getXValue(s,i);
      double y=d.getYValue(s,i);
      Out("x = "+x+"  y = "+y);
      xCrosshair.setValue(x);
      yCrosshair.setValue(y);
    }
  }

  // ...（略去其它代码）

  // 在事件分派线程中创建并显示GUI。为了线程安全，应从事件分派线程中调用此方法。
  static void Create_And_Show_GUI()
  {
    final PriceVolume_Chart demo=new PriceVolume_Chart("ADS");

    JFrame frame=new JFrame("PriceVolume_Chart Frame");
    frame.add(demo);
    frame.addWindowListener(new WindowAdapter()
    {
      // ...（略去其它代码）
    });
    frame.pack();
    frame.setLocationRelativeTo(null);
    frame.setVisible(true);
  }

  public static void main(String[] args)
  {
    // 安排一个任务给事件分派线程：创建并显示此应用程序的GUI。
    SwingUtilities.invokeLater(new Runnable() { public void run() { Create_And_Show_GUI(); } });
  }
}

class MyRender extends XYBarRenderer
{
  @Override
  public Paint getItemPaint(int row,int col)
  {
    this.setBarAlignmentFactor(0.5);
    // ...（略去其它代码）
  }
}

这是您提供的代码的翻译部分。如果您还有其他问题或需要进一步的帮助，请随时问我。

英文:

This question is related to my previous question [ https://stackoverflow.com/questions/64148281/how-to-display-volume-in-the-domain-crosshair-and-set-the-crosshair-programmatic ], with the help of @trashgod, I got the answers for most of my questions, but one question is still unanswered, here I'll ask this question from a different angle.

In my Swing app, there is a list of dates with some data, when I click on a certain date, I want my app to display a chart and points to that date when the image shows up, so I don't have to move my mouse around to find and display info of that date. So the app screen shots look like the following.

在JFreeChart中如何获取图表上特定点的[x,y]值？

So as you can see from the top screenshot, if I click on 2020-07-29 on the date list, the chart will load and the cross-hairs will be automatically focused on 2020-07-29, and the relative info will auto show up. In the bottom screenshot, if I click on the date 2020-08-11, the chart image will load and the mouse will be set on 2020-08-11, so as a user, I don't have to search on the image and find that date's data.

My simplified app is listed below :

import java.awt.*;
import java.awt.event.*;
import java.text.*;
import java.util.*;
import javax.swing.*;
import org.jfree.chart.*;
import org.jfree.chart.axis.*;
import org.jfree.chart.entity.*;
import org.jfree.chart.plot.XYPlot;
import org.jfree.chart.renderer.xy.XYBarRenderer;
import org.jfree.data.time.*;
import org.jfree.data.xy.XYDataset;
import org.jfree.chart.labels.*;
import org.jfree.chart.panel.*;
import org.jfree.chart.plot.*;
public class PriceVolume_Chart extends JPanel implements ChartMouseListener    // A demo application for price-volume chart.   
{
ChartPanel panel;
TimeSeries Price_series=new TimeSeries("Price");
TimeSeries Volume_Series=new TimeSeries("Volume");
Crosshair xCrosshair,yCrosshair;
static Vector<String> Volume_Color_Vector=new Vector();
public PriceVolume_Chart(String Symbol)
{
JFreeChart chart=createChart(Symbol);
panel=new ChartPanel(chart,true,true,true,false,true);
panel.setPreferredSize(new Dimension(1000,500));
panel.addChartMouseListener(this);
CrosshairOverlay crosshairOverlay=new CrosshairOverlay();
float[] dash={2f,0f,2f};
BasicStroke bs=new BasicStroke(1,BasicStroke.CAP_BUTT,BasicStroke.JOIN_ROUND,1.0f,dash,2f);
xCrosshair=new Crosshair(Double.NaN,Color.GRAY,bs);
xCrosshair.setLabelBackgroundPaint(new Color(0f,0f,0f,1f));
xCrosshair.setLabelFont(xCrosshair.getLabelFont().deriveFont(14f));
xCrosshair.setLabelPaint(new Color(1f,1f,1f,1f));
xCrosshair.setLabelGenerator(new CrosshairLabelGenerator()
{
@Override
public String generateLabel(Crosshair crosshair)
{
long ms=(long)crosshair.getValue();
TimeSeriesDataItem item=null;
for (int i=0;i<Volume_Series.getItemCount();i++)
{
item=Volume_Series.getDataItem(i);
if (ms==item.getPeriod().getFirstMillisecond()) break;
}
long volume=item.getValue().longValue();
return NumberFormat.getInstance().format(volume);
}
});
xCrosshair.setLabelVisible(true);
yCrosshair=new Crosshair(Double.NaN,Color.GRAY,bs);
yCrosshair.setLabelBackgroundPaint(new Color(0f,0f,0f,1f));
yCrosshair.setLabelFont(xCrosshair.getLabelFont().deriveFont(14f));
yCrosshair.setLabelPaint(new Color(1f,1f,1f,1f));
yCrosshair.setLabelVisible(true);
crosshairOverlay.addDomainCrosshair(xCrosshair);
crosshairOverlay.addRangeCrosshair(yCrosshair);
panel.addOverlay(crosshairOverlay);
add(panel);
/*
xCrosshair.setValue(1.5959952E12);
xCrosshair.setVisible(true);
yCrosshair.setValue(45.230579);
yCrosshair.setVisible(true);
*/
}
private JFreeChart createChart(String Symbol)
{
createPriceDataset(Symbol);
XYDataset priceData=new TimeSeriesCollection(Price_series);
JFreeChart chart=ChartFactory.createTimeSeriesChart(Symbol,"Date",getYLabel("Price ( $ )"),priceData,true,true,true);
XYPlot plot=chart.getXYPlot();
plot.setBackgroundPaint(new Color(192,196,196));
NumberAxis rangeAxis1=(NumberAxis)plot.getRangeAxis();
rangeAxis1.setLowerMargin(0.40);                                           // Leave room for volume bars
plot.getRenderer().setDefaultToolTipGenerator(new StandardXYToolTipGenerator(StandardXYToolTipGenerator.DEFAULT_TOOL_TIP_FORMAT,new SimpleDateFormat("yyyy-MM-d"),NumberFormat.getCurrencyInstance()));
NumberAxis rangeAxis2=new NumberAxis("Volume");
rangeAxis2.setUpperMargin(1.00);                                           // Leave room for price line   
rangeAxis2.setNumberFormatOverride(NumberFormat.getNumberInstance());
plot.setRangeAxis(1,rangeAxis2);
plot.setDataset(1,new TimeSeriesCollection(Volume_Series));
plot.setRangeAxis(1,rangeAxis2);
plot.mapDatasetToRangeAxis(1,1);
MyRender Renderer=new MyRender();
Renderer.setShadowVisible(false);
plot.setRenderer(1,Renderer);
DateAxis domainAxis=(DateAxis) plot.getDomainAxis();                     // Consider adjusting the lower margin of the domain axis for symmetry.
domainAxis.setLowerMargin(0.05);
return chart;
}
private void createPriceDataset(String Symbol)
{
String Lines[]=new String[21],Items[],Date;
int Year, Month, Day;
long Volume,Last_Volume=0;
double Price;
Lines[0]="Date,Open,High,Low,Close,Adj Close,Volume";
Lines[1]="2020-07-17,44.110001,44.369999,41.919998,42.509998,42.323395,849700";
Lines[2]="2020-07-20,41.630001,41.680000,39.669998,40.119999,39.943886,1319300";
Lines[3]="2020-07-21,40.880001,42.860001,40.860001,42.270000,42.084450,2070300";
Lines[4]="2020-07-22,41.919998,42.700001,41.090000,42.570000,42.383133,1317600";
Lines[5]="2020-07-23,43.919998,46.389999,43.279999,44.759998,44.563519,1917700";
Lines[6]="2020-07-24,46.500000,46.500000,43.950001,44.410000,44.215057,1384600";
Lines[7]="2020-07-27,44.000000,44.240002,42.610001,43.860001,43.667469,799800";
Lines[8]="2020-07-28,43.389999,44.590000,42.930000,43.020000,42.831158,699700";
Lines[9]="2020-07-29,42.759998,45.590000,42.740002,45.430000,45.230579,826200";
Lines[10]="2020-07-30,44.160000,44.639999,42.959999,44.500000,44.304661,798100";
Lines[11]="2020-07-31,44.330002,44.419998,42.580002,44.360001,44.165276,1037800";
Lines[12]="2020-08-03,44.560001,45.599998,43.419998,44.939999,44.742729,797000";
Lines[13]="2020-08-04,44.900002,45.500000,43.450001,43.540001,43.348877,971100";
Lines[14]="2020-08-05,44.860001,45.389999,43.650002,45.330002,45.131020,902000";
Lines[15]="2020-08-06,45.049999,46.279999,44.330002,45.299999,45.101147,645200";
Lines[16]="2020-08-07,44.849998,46.189999,44.189999,46.150002,45.947418,604900";
Lines[17]="2020-08-10,46.669998,48.410000,46.549999,47.290001,47.082417,960200";
Lines[18]="2020-08-11,49.110001,50.849998,48.799999,48.910000,48.695301,1187700";
Lines[19]="2020-08-12,49.759998,50.009998,47.060001,47.840000,47.630001,752800";
Lines[20]="2020-08-13,46.950001,48.369999,46.459999,47.110001,47.110001,535700";
for (int i=1;i<Lines.length;i++)
{
Items=Lines[i].split(",");
Date=Items[0].replace("-0","-");
Price=Double.parseDouble(Items[5]);
Volume=Long.parseLong(Items[6]);
Items=Date.split("-");
Year=Integer.parseInt(Items[0]);
Month=Integer.parseInt(Items[1]);
Day=Integer.parseInt(Items[2]);
Price_series.add(new Day(Day,Month,Year),Price);
Volume_Series.add(new Day(Day,Month,Year),Volume);
Volume_Color_Vector.add(Volume>=Last_Volume?"+":"-");
Last_Volume=Volume;
}
}
@Override
public void chartMouseClicked(ChartMouseEvent event)
{
// ignore
}
public void chartMouseMoved(ChartMouseEvent cmevent)
{
ChartEntity chartentity=cmevent.getEntity();
if (chartentity instanceof XYItemEntity)
{
XYItemEntity e=(XYItemEntity)chartentity;
XYDataset d=e.getDataset();
int s=e.getSeriesIndex();
int i=e.getItem();
double x=d.getXValue(s,i);
double y=d.getYValue(s,i);
Out("x = "+x+"  y = "+y);
xCrosshair.setValue(x);
yCrosshair.setValue(y);
}
}
String getYLabel(String Text)
{
String Result="";
for (int i=0;i<Text.length();i++) Result+=Text.charAt(i)+(i<Text.length()-1?"\u2009":"");
//    Out(Result);
return Result;
}
private static void out(String message) { System.out.print(message); }
private static void Out(String message) { System.out.println(message); }
// Create the GUI and show it. For thread safety, this method should be invoked from the event-dispatching thread.
static void Create_And_Show_GUI()
{
final PriceVolume_Chart demo=new PriceVolume_Chart("ADS");
JFrame frame=new JFrame("PriceVolume_Chart Frame");
frame.add(demo);
frame.addWindowListener(new WindowAdapter()
{
public void windowActivated(WindowEvent e) { }
public void windowClosed(WindowEvent e) { }
public void windowClosing(WindowEvent e) { System.exit(0); }
public void windowDeactivated(WindowEvent e) { }
public void windowDeiconified(WindowEvent e) { demo.repaint(); }
public void windowGainedFocus(WindowEvent e) { demo.repaint(); }
public void windowIconified(WindowEvent e) { }
public void windowLostFocus(WindowEvent e) { }
public void windowOpening(WindowEvent e) { demo.repaint(); }
public void windowOpened(WindowEvent e) { }
public void windowResized(WindowEvent e) { demo.repaint(); }
public void windowStateChanged(WindowEvent e) { demo.repaint(); }
});
frame.pack();
frame.setLocationRelativeTo(null);
frame.setVisible(true);
}
public static void main(String[] args)
{
// Schedule a job for the event-dispatching thread : creating and showing this application's GUI.
SwingUtilities.invokeLater(new Runnable() { public void run() { Create_And_Show_GUI(); } });
}
}
class MyRender extends XYBarRenderer
{
@Override
public Paint getItemPaint(int row,int col)
{
this.setBarAlignmentFactor(0.5);
//    System.out.println(row+" "+col+" "+super.getItemPaint(row,col));
return PriceVolume_Chart.Volume_Color_Vector.elementAt(col).equals("+")?super.getItemPaint(row,col):new Color(0.56f,0.2f,0.5f,1f);
}
}

I know how to set the cross-hair on a certain point on the chart [ Commented out : xCrosshair.setValue(1.5959952E12); ], yet I do not know the [x,y] values of a certain date on a certain chart, therefore my question is : on a JFreeChart like the one I have here, how to get the [x,y] values of a vertain date [ e.g. 2020-07-29 ], or how to get the [x,y] values of the N-th date [ e.g. 9-th date = 2020-07-29 ] ?

答案1

得分: 1

专注于问题“如何获取特定日期的[x,y]值”，NumberAxis 方法 java2DToValue() 和 valueToJava2D() 展示了解决方法。具体示例可参考 CrosshairOverlayDemo1，通用原理在此处进行了讨论。

幸运的是，您可以仅使用数据来突出显示图表元素。特别地，Annotation、Marker 和 Crosshair 的实现都与数据坐标一起工作。以具体示例来说，让 PriceVolume_Chart 实现 ActionListener，并在图表的构造函数中添加一个 javax.swing.Timer：

public PriceVolume_Chart(String Symbol) {
…
Timer t = new Timer(500, this);
t.start();
}

然后，给定一个适当的 index 和监听器，您将看到十字线以每秒 2 次的频率依次移动到每个日期。

private int index;
@Override
public void actionPerformed(ActionEvent e) {
TimeSeriesDataItem item = Volume_Series.getDataItem(index);
xCrosshair.setValue(item.getPeriod().getFirstMillisecond());
item = Price_series.getDataItem(index);
yCrosshair.setValue(item.getValue().doubleValue());
index++;
if (index == Volume_Series.getItemCount()) {
index = 0;
}
}

当用户选择特定数据条目时，您可以使用类似的监听器来移动所选指示器。具体细节取决于您对观察者模式的实现，可以在此处进行讨论。由于您希望图表和表视图共享对公共模型的访问权，您可以考虑扩展 AbstractXYDataset，示例见此处，并实现一个 Swing 的 TableModel；或者，考虑扩展 AbstractTableModel，示例见此处，并实现 XYDataset 接口。

英文:

Focusing narrowly on the question of "how to get the [x,y] values of a certain date," the NumberAxis methods java2DToValue()
and valueToJava2D() illustrate the approach. CrosshairOverlayDemo1 is a concrete example, and the general principle is examined here.

Fortunately, you can highlight a chart element using just its data. In particular, the implementations of Annotation, Marker and Crosshair all work with data coordinates. As a concrete example, let PriceVolume_Chart implement ActionListener and add a javax.swing.Timer to the chart's constructor:

public PriceVolume_Chart(String Symbol) {
…
Timer t = new Timer(500, this);
t.start();
}

Then, given a suitable index and listener, you'll see the crosshairs move to each date in succession at 2 Hz.

private int index;
@Override
public void actionPerformed(ActionEvent e) {
TimeSeriesDataItem item = Volume_Series.getDataItem(index);
xCrosshair.setValue(item.getPeriod().getFirstMillisecond());
item = Price_series.getDataItem(index);
yCrosshair.setValue(item.getValue().doubleValue());
index++;
if (index == Volume_Series.getItemCount()) {
index = 0;
}
}

You can use a similar listener to move your chosen indicator when the user selects a particular data entry. The exact details depend on your implementation of the observer pattern, discussed here. As you'll want to let both chart and table views share access to a common model, you may consider extending AbstractXYDataset, shown here and implementing a Swing TableModel; alternatively, consider extending AbstractTableModel, shown here and implementing the XYDataset interface.

答案2

得分: 1

Alright, @trashgod was inspirational. I finally tried his suggestions and got to the answer I was looking for; here is the essential solution:

TimeSeriesDataItem itemX = Volume_Series.getDataItem(Index);
xCrosshair.setValue(itemX.getPeriod().getFirstMillisecond());

TimeSeriesDataItem itemY = Price_series.getDataItem(Index);
yCrosshair.setValue(itemY.getValue().doubleValue());

Complete example:

import java.awt.*;
import java.awt.event.*;
import java.text.*;
import java.util.*;
import javax.swing.*;
import org.jfree.chart.*;
import org.jfree.chart.axis.*;
import org.jfree.chart.entity.*;
import org.jfree.chart.plot.XYPlot;
import org.jfree.chart.renderer.xy.XYBarRenderer;
import org.jfree.data.time.*;
import org.jfree.data.xy.XYDataset;
import org.jfree.chart.labels.*;
import org.jfree.chart.panel.*;
import org.jfree.chart.plot.*;

public class PriceVolume_Chart extends JPanel implements ChartMouseListener {
  // ... (rest of the code)
}

class MyRender extends XYBarRenderer {
  // ... (rest of the code)
}

Please note that due to the complexity of the code and the limitations of the text format, some details and context might be lost in the translation.

英文:

Alright, @trashgod was inspirational. I finally tried his suggestions and got to the answer I was looking for; here is the essential solution:

TimeSeriesDataItem itemX = Volume_Series.getDataItem(Index);
xCrosshair.setValue(itemX.getPeriod().getFirstMillisecond());
TimeSeriesDataItem itemY = Price_series.getDataItem(Index);
yCrosshair.setValue(itemY.getValue().doubleValue());

Complete example:

import java.awt.*;
import java.awt.event.*;
import java.text.*;
import java.util.*;
import javax.swing.*;
import org.jfree.chart.*;
import org.jfree.chart.axis.*;
import org.jfree.chart.entity.*;
import org.jfree.chart.plot.XYPlot;
import org.jfree.chart.renderer.xy.XYBarRenderer;
import org.jfree.data.time.*;
import org.jfree.data.xy.XYDataset;
import org.jfree.chart.labels.*;
import org.jfree.chart.panel.*;
import org.jfree.chart.plot.*;
public class PriceVolume_Chart extends JPanel implements ChartMouseListener   // A demo application for price-volume chart.   
{
ChartPanel panel;
TimeSeries Price_series=new TimeSeries("Price");
TimeSeries Volume_Series=new TimeSeries("Volume");
Crosshair xCrosshair,yCrosshair;
static Vector<String> Volume_Color_Vector=new Vector();
private int index;
public PriceVolume_Chart(String Symbol,int Index)
{
JFreeChart chart=createChart(Symbol);
panel=new ChartPanel(chart,true,true,true,false,true);
panel.setPreferredSize(new Dimension(1000,500));
panel.addChartMouseListener(this);
CrosshairOverlay crosshairOverlay=new CrosshairOverlay();
float[] dash={2f,0f,2f};
BasicStroke bs=new BasicStroke(1,BasicStroke.CAP_BUTT,BasicStroke.JOIN_ROUND,1.0f,dash,2f);
xCrosshair=new Crosshair(Double.NaN,Color.GRAY,bs);
xCrosshair.setLabelBackgroundPaint(new Color(0f,0f,0f,1f));
xCrosshair.setLabelFont(xCrosshair.getLabelFont().deriveFont(14f));
xCrosshair.setLabelPaint(new Color(1f,1f,1f,1f));
xCrosshair.setLabelGenerator(new CrosshairLabelGenerator()
{
@Override
public String generateLabel(Crosshair crosshair)
{
long ms=(long)crosshair.getValue();
TimeSeriesDataItem item=null;
for (int i=0;i<Volume_Series.getItemCount();i++)
{
item=Volume_Series.getDataItem(i);
if (ms==item.getPeriod().getFirstMillisecond()) break;
}
long volume=item.getValue().longValue();
return NumberFormat.getInstance().format(volume);
}
});
xCrosshair.setLabelVisible(true);
yCrosshair=new Crosshair(Double.NaN,Color.GRAY,bs);
yCrosshair.setLabelBackgroundPaint(new Color(0f,0f,0f,1f));
yCrosshair.setLabelFont(xCrosshair.getLabelFont().deriveFont(14f));
yCrosshair.setLabelPaint(new Color(1f,1f,1f,1f));
yCrosshair.setLabelVisible(true);
crosshairOverlay.addDomainCrosshair(xCrosshair);
crosshairOverlay.addRangeCrosshair(yCrosshair);
panel.addOverlay(crosshairOverlay);
add(panel);
TimeSeriesDataItem itemX=Volume_Series.getDataItem(Index);
xCrosshair.setValue(itemX.getPeriod().getFirstMillisecond());
TimeSeriesDataItem itemY=Price_series.getDataItem(Index);
yCrosshair.setValue(itemY.getValue().doubleValue());
}
private JFreeChart createChart(String Symbol)
{
createPriceDataset(Symbol);
XYDataset priceData=new TimeSeriesCollection(Price_series);
JFreeChart chart=ChartFactory.createTimeSeriesChart(Symbol,"Date",getYLabel("Price ( $ )"),priceData,true,true,true);
XYPlot plot=chart.getXYPlot();
plot.setBackgroundPaint(new Color(192,196,196));
NumberAxis rangeAxis1=(NumberAxis)plot.getRangeAxis();
rangeAxis1.setLowerMargin(0.40);                                           // Leave room for volume bars
plot.getRenderer().setDefaultToolTipGenerator(new StandardXYToolTipGenerator(StandardXYToolTipGenerator.DEFAULT_TOOL_TIP_FORMAT,new SimpleDateFormat("yyyy-MM-d"),NumberFormat.getCurrencyInstance()));
NumberAxis rangeAxis2=new NumberAxis("Volume");
rangeAxis2.setUpperMargin(1.00);                                           // Leave room for price line   
rangeAxis2.setNumberFormatOverride(NumberFormat.getNumberInstance());
plot.setRangeAxis(1,rangeAxis2);
plot.setDataset(1,new TimeSeriesCollection(Volume_Series));
plot.setRangeAxis(1,rangeAxis2);
plot.mapDatasetToRangeAxis(1,1);
MyRender Renderer=new MyRender();
Renderer.setShadowVisible(false);
plot.setRenderer(1,Renderer);
DateAxis domainAxis=(DateAxis) plot.getDomainAxis();                     // Consider adjusting the lower margin of the domain axis for symmetry.
domainAxis.setLowerMargin(0.05);
return chart;
}
private void createPriceDataset(String Symbol)
{
String Lines[]=new String[21],Items[],Date;
int Year, Month, Day;
long Volume,Last_Volume=0;
double Price;
Lines[0]="Date,Open,High,Low,Close,Adj Close,Volume";
Lines[1]="2020-07-17,44.110001,44.369999,41.919998,42.509998,42.323395,849700";
Lines[2]="2020-07-20,41.630001,41.680000,39.669998,40.119999,39.943886,1319300";
Lines[3]="2020-07-21,40.880001,42.860001,40.860001,42.270000,42.084450,2070300";
Lines[4]="2020-07-22,41.919998,42.700001,41.090000,42.570000,42.383133,1317600";
Lines[5]="2020-07-23,43.919998,46.389999,43.279999,44.759998,44.563519,1917700";
Lines[6]="2020-07-24,46.500000,46.500000,43.950001,44.410000,44.215057,1384600";
Lines[7]="2020-07-27,44.000000,44.240002,42.610001,43.860001,43.667469,799800";
Lines[8]="2020-07-28,43.389999,44.590000,42.930000,43.020000,42.831158,699700";
Lines[9]="2020-07-29,42.759998,45.590000,42.740002,45.430000,45.230579,826200";
Lines[10]="2020-07-30,44.160000,44.639999,42.959999,44.500000,44.304661,798100";
Lines[11]="2020-07-31,44.330002,44.419998,42.580002,44.360001,44.165276,1037800";
Lines[12]="2020-08-03,44.560001,45.599998,43.419998,44.939999,44.742729,797000";
Lines[13]="2020-08-04,44.900002,45.500000,43.450001,43.540001,43.348877,971100";
Lines[14]="2020-08-05,44.860001,45.389999,43.650002,45.330002,45.131020,902000";
Lines[15]="2020-08-06,45.049999,46.279999,44.330002,45.299999,45.101147,645200";
Lines[16]="2020-08-07,44.849998,46.189999,44.189999,46.150002,45.947418,604900";
Lines[17]="2020-08-10,46.669998,48.410000,46.549999,47.290001,47.082417,960200";
Lines[18]="2020-08-11,49.110001,50.849998,48.799999,48.910000,48.695301,1187700";
Lines[19]="2020-08-12,49.759998,50.009998,47.060001,47.840000,47.630001,752800";
Lines[20]="2020-08-13,46.950001,48.369999,46.459999,47.110001,47.110001,535700";
for (int i=1;i<Lines.length;i++)
{
Items=Lines[i].split(",");
Date=Items[0].replace("-0","-");
Price=Double.parseDouble(Items[5]);
Volume=Long.parseLong(Items[6]);
Items=Date.split("-");
Year=Integer.parseInt(Items[0]);
Month=Integer.parseInt(Items[1]);
Day=Integer.parseInt(Items[2]);
Price_series.add(new Day(Day,Month,Year),Price);
Volume_Series.add(new Day(Day,Month,Year),Volume);
Volume_Color_Vector.add(Volume>=Last_Volume?"+":"-");
Last_Volume=Volume;
}
}
@Override
public void chartMouseClicked(ChartMouseEvent event)
{
// ignore
}
public void chartMouseMoved(ChartMouseEvent cmevent)
{
ChartEntity chartentity=cmevent.getEntity();
if (chartentity instanceof XYItemEntity)
{
XYItemEntity e=(XYItemEntity)chartentity;
XYDataset d=e.getDataset();
int s=e.getSeriesIndex();
int i=e.getItem();
double x=d.getXValue(s,i);
double y=d.getYValue(s,i);
Out("x = "+x+"  y = "+y);
xCrosshair.setValue(x);
yCrosshair.setValue(y);
}
}
String getYLabel(String Text)
{
String Result="";
for (int i=0;i<Text.length();i++) Result+=Text.charAt(i)+(i<Text.length()-1?"\u2009":"");
//    Out(Result);
return Result;
}
private static void out(String message) { System.out.print(message); }
private static void Out(String message) { System.out.println(message); }
// Create the GUI and show it. For thread safety, this method should be invoked from the event-dispatching thread.
static void Create_And_Show_GUI()
{
final PriceVolume_Chart demo=new PriceVolume_Chart("ADS",19);
JFrame frame=new JFrame("PriceVolume_Chart Frame");
frame.add(demo);
frame.addWindowListener(new WindowAdapter()
{
public void windowActivated(WindowEvent e) { }
public void windowClosed(WindowEvent e) { }
public void windowClosing(WindowEvent e) { System.exit(0); }
public void windowDeactivated(WindowEvent e) { }
public void windowDeiconified(WindowEvent e) { demo.repaint(); }
public void windowGainedFocus(WindowEvent e) { demo.repaint(); }
public void windowIconified(WindowEvent e) { }
public void windowLostFocus(WindowEvent e) { }
public void windowOpening(WindowEvent e) { demo.repaint(); }
public void windowOpened(WindowEvent e) { }
public void windowResized(WindowEvent e) { demo.repaint(); }
public void windowStateChanged(WindowEvent e) { demo.repaint(); }
});
frame.pack();
frame.setLocationRelativeTo(null);
frame.setVisible(true);
}
public static void main(String[] args)
{
// Schedule a job for the event-dispatching thread : creating and showing this application's GUI.
SwingUtilities.invokeLater(new Runnable() { public void run() { Create_And_Show_GUI(); } });
}
}
class MyRender extends XYBarRenderer
{
@Override
public Paint getItemPaint(int row,int col)
{
this.setBarAlignmentFactor(0.5);
//    System.out.println(row+" "+col+" "+super.getItemPaint(row,col));
return PriceVolume_Chart.Volume_Color_Vector.elementAt(col).equals("+")?super.getItemPaint(row,col):new Color(0.56f,0.2f,0.5f,1f);
}
}

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  • 本文由 发表于 2020年10月5日 10:27:08
  • 转载请务必保留本文链接：https://go.coder-hub.com/64201748.html
  • java
  • jfreechart
  • swing
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