JFreeChart：如何用振盪器創建中間面板

Question

我有兩個面板。 一個與價格（OHLC）和一個移動平均線，一個與音量。 我想創建一箇中間面板，兩個圍繞零擺動的oscillators。每個振盪器是它上面圖表的兩個移動均線的差值。 這可能嗎？ 謝謝。

Answer 1

這是最終的解決方案。我刪除了Plot3創建的所有引用。

public class PriceVolumeChart2 extends ApplicationFrame{ 


final static String filename = "A.txt"; 
static TimeSeries t1 = new TimeSeries("49-day moving average"); 

/** 
* Default constructor 
*/ 
public PriceVolumeChart2(String title) 
{ 
    super(title); 
    JPanel panel = createDemoPanel(); 
    panel.setPreferredSize(new Dimension(500, 270)); 
    setContentPane(panel); 
} 


//create price dataset 
//hard-coded here 
private static OHLCDataset createPriceDataset(String filename) 
{ 
    //the following data is taken from http://finance.yahoo.com/ 
    //for demo purposes... 


    OHLCSeries s1 = new OHLCSeries(filename); 

    try { 
     BufferedReader in = new BufferedReader(new FileReader(filename)); 
     DateFormat df = new SimpleDateFormat("yyyyMMdd"); 
     String inputLine; 
     in.readLine(); 
     while ((inputLine = in.readLine()) != null) { 
      StringTokenizer st = new StringTokenizer(inputLine, ","); 
      Date date  = df.parse(st.nextToken()); 
      double open  = Double.parseDouble(st.nextToken()); 
      double high  = Double.parseDouble(st.nextToken()); 
      double low  = Double.parseDouble(st.nextToken()); 
      double close = Double.parseDouble(st.nextToken()); 
      double volume = Double.parseDouble(st.nextToken()); 
      //double adjClose = Double.parseDouble(st.nextToken()); 
      s1.add(new Day(date), open, high, low, close); 
      t1.add(new Day(date), close); 
     } 
     in.close(); 
    } 
    catch (Exception e) { 
     e.printStackTrace(); 
    } 



    OHLCSeriesCollection dataset = new OHLCSeriesCollection(); 
    dataset.addSeries(s1); 

    return dataset; 
} 


//create volume dataset 
private static IntervalXYDataset createVolumeDataset(String filename) 
{ 
    //create dataset 2... 
    TimeSeries s1 = new TimeSeries("Volume"); 

    try { 
     BufferedReader in = new BufferedReader(new FileReader(filename)); 
     DateFormat df = new SimpleDateFormat("yyyyMMdd"); 
     String inputLine; 
     in.readLine(); 
     while ((inputLine = in.readLine()) != null) { 
      StringTokenizer st = new StringTokenizer(inputLine, ","); 
      Date date = df.parse(st.nextToken()); 
      st.nextToken(); 
      st.nextToken(); 
      st.nextToken(); 
      st.nextToken(); 
      double volume = Double.parseDouble(st.nextToken()); 
      //double adjClose = Double.parseDouble(st.nextToken()); 
      s1.add(new Day(date), volume); 
     } 
     in.close(); 
    } 
    catch (Exception e) { 
     e.printStackTrace(); 
    } 



    return new TimeSeriesCollection(s1); 
} 


private static JFreeChart createCombinedChart() 
{ 
    OHLCDataset data1 = createPriceDataset(filename); 

    XYItemRenderer renderer1 = new HighLowRenderer(); 
    renderer1.setBaseToolTipGenerator(new StandardXYToolTipGenerator(StandardXYToolTipGenerator.DEFAULT_TOOL_TIP_FORMAT, new SimpleDateFormat("d-MMM-yyyy"), new DecimalFormat("0.00"))); 
    renderer1.setSeriesPaint(0, Color.blue); 
    DateAxis domainAxis = new DateAxis("Date"); 
    NumberAxis rangeAxis = new NumberAxis("Price"); 
    rangeAxis.setNumberFormatOverride(new DecimalFormat("$0.00")); 
    rangeAxis.setAutoRange(true); 
    rangeAxis.setAutoRangeIncludesZero(false); 
    XYPlot plot1 = new XYPlot(data1, domainAxis, rangeAxis, renderer1); 
    plot1.setBackgroundPaint(Color.lightGray); 
    plot1.setDomainGridlinePaint(Color.white); 
    plot1.setRangeGridlinePaint(Color.white); 
    plot1.setRangePannable(true); 

    //Overlay the Long-Term Trend Indicator 
    TimeSeries dataset3 = MovingAverage.createMovingAverage(t1, "LT", 49, 49); 
    TimeSeriesCollection collection = new TimeSeriesCollection(); 
    collection.addSeries(dataset3); 
    plot1.setDataset(1, collection); 
    plot1.setRenderer(1, new StandardXYItemRenderer()); 

    //add a second dataset (volume) and renderer 
    IntervalXYDataset data2 = createVolumeDataset(filename); 
    XYBarRenderer renderer2 = new XYBarRenderer(); 
    renderer2.setDrawBarOutline(false); 
    renderer2.setBaseToolTipGenerator(new StandardXYToolTipGenerator(StandardXYToolTipGenerator.DEFAULT_TOOL_TIP_FORMAT, new SimpleDateFormat("d-MMM-yyyy"), new DecimalFormat("0,000.00"))); 
    renderer2.setSeriesPaint(0, Color.red); 

    XYPlot plot2 = new XYPlot(data2, null, new NumberAxis("Volume"), renderer2); 
    plot2.setBackgroundPaint(Color.lightGray); 
    plot2.setDomainGridlinePaint(Color.white); 
    plot2.setRangeGridlinePaint(Color.white); 

    //middle pane oscillator 
    TimeSeries threeMA = MovingAverage.createMovingAverage(t1, "SL1", 3, 3); 
    TimeSeries tenMA = MovingAverage.createMovingAverage(t1, "SL2", 10, 10); 

    List<TimeSeriesDataItem> threeItemsList = new ArrayList<TimeSeriesDataItem>(); 
    List<TimeSeriesDataItem> tenItemsList = new ArrayList<TimeSeriesDataItem>(); 
    threeItemsList = threeMA.getItems(); 
    tenItemsList = tenMA.getItems(); 

    for (TimeSeriesDataItem item: threeItemsList) 
    { 
     System.out.println("three" + item.getValue().doubleValue() + " " + item.getPeriod().toString()); 
    } 

    for (TimeSeriesDataItem item: tenItemsList) 
    { 
     System.out.println("ten" + item.getValue().doubleValue() + " " + item.getPeriod().toString()); 
    } 

    TimeSeries slDataset = new TimeSeries("SL"); 
    int i = 0; 
    //List<TimeSeriesDataItem> slItemsList = new ArrayList<TimeSeriesDataItem>(); 
    TimeSeriesDataItem myItem; 
    Day threeDate; 

    for (TimeSeriesDataItem item: threeItemsList) 
    { 
     //RegularTimePeriod variable = item.getPeriod(); 
     if (item.getPeriod().compareTo(tenItemsList.get(0).getPeriod()) < 0) 
     { 
      continue; 
     } 
     else 
     { 
      double result = item.getValue().doubleValue() - tenItemsList.get(i).getValue().doubleValue(); 
      Day currentDay = (Day)item.getPeriod(); 
      myItem = new TimeSeriesDataItem(currentDay, result); 
      slDataset.add(myItem); 

      //slItemsList.add(myItem); 
      i++; 
     } 


    } 

    System.out.println("slDataset count : " + slDataset.getItemCount()); 



    TimeSeriesCollection collectionSL = new TimeSeriesCollection(); 
    collectionSL.addSeries(slDataset); 

    XYPlot plot3 = new XYPlot(collectionSL, new DateAxis("Date"), new NumberAxis("Value"), new StandardXYItemRenderer()); 
    plot3.setBackgroundPaint(Color.lightGray); 
    plot3.setDomainGridlinePaint(Color.white); 
    plot3.setRangeGridlinePaint(Color.white); 
    plot3.setRangePannable(true); 
    plot3.setDomainPannable(true); 



    CombinedDomainXYPlot cplot = new CombinedDomainXYPlot(domainAxis); 
    cplot.add(plot1, 3); 
    cplot.add(plot3, 2); 
    cplot.add(plot2, 2); 
    cplot.setGap(8.0); 
    cplot.setDomainGridlinePaint(Color.white); 
    cplot.setDomainGridlinesVisible(true); 
    cplot.setDomainPannable(true); 


    //return the new combined chart 
    JFreeChart chart = new JFreeChart("Sun Microsystems (SUNW)", JFreeChart.DEFAULT_TITLE_FONT, cplot, false); 


    ChartUtilities.applyCurrentTheme(chart); 
    renderer2.setShadowVisible(false); 
    renderer2.setBarPainter(new StandardXYBarPainter()); 

    return chart; 
} 


//create a panel 
public static JPanel createDemoPanel() 
{ 
    JFreeChart chart = createCombinedChart(); 
    ChartPanel panel = new ChartPanel(chart); 
    panel.setMouseWheelEnabled(true); 

    return panel; 
} 

public static void main(String[] args) { 
    // TODO code application logic here 
    PriceVolumeChart2 demo = new PriceVolumeChart2("JFreeChart: CombinedXYPlotDemo1.java (base)"); 
    demo.pack(); 
    RefineryUtilities.centerFrameOnScreen(demo); 
    demo.setVisible(true); 
} 

}