Java OHLCDataset类代码示例

import org.jfree.data.xy.OHLCDataset; //导入依赖的package包/类
private OHLCDataset getOHLCDataset(List<Candle> chartDatas) {

        final int size = chartDatas.size();
        
        Date[] date = new Date[size];
        double[] high = new double[size];
        double[] low = new double[size];
        double[] open = new double[size];
        double[] close = new double[size];
        double[] volume = new double[size];

        int i = 0;
        for(Candle chartData : chartDatas) {
            date[i] = new Date(chartData.getStartTimeStamp());
            high[i] = chartData.getHigh();
            low[i] = chartData.getLow();
            open[i] = chartData.getOpen();
            close[i] = chartData.getClose();
            volume[i] = chartData.getVolume();
            i++;
        }
        
        return new DefaultHighLowDataset("Price", date, high, low, open, close, volume);
    }
 

import org.jfree.data.xy.OHLCDataset; //导入依赖的package包/类
/**
 * Builds a JFreeChart OHLC dataset from a ta4j time series.
 * @param series a time series
 * @return an Open-High-Low-Close dataset
 */
private static OHLCDataset createOHLCDataset(TimeSeries series) {
    final int nbTicks = series.getTickCount();
    
    Date[] dates = new Date[nbTicks];
    double[] opens = new double[nbTicks];
    double[] highs = new double[nbTicks];
    double[] lows = new double[nbTicks];
    double[] closes = new double[nbTicks];
    double[] volumes = new double[nbTicks];
    
    for (int i = 0; i < nbTicks; i++) {
        Tick tick = series.getTick(i);
        dates[i] = new Date(tick.getEndTime().toEpochSecond() * 1000);
        opens[i] = tick.getOpenPrice().toDouble();
        highs[i] = tick.getMaxPrice().toDouble();
        lows[i] = tick.getMinPrice().toDouble();
        closes[i] = tick.getClosePrice().toDouble();
        volumes[i] = tick.getVolume().toDouble();
    }
    
    OHLCDataset dataset = new DefaultHighLowDataset("btc", dates, highs, lows, opens, closes, volumes);
    
    return dataset;
}
 

import org.jfree.data.xy.OHLCDataset; //导入依赖的package包/类
/**
 * Creates and returns a default instance of a candlesticks chart.
 *
 * @param title  the chart title (<code>null</code> permitted).
 * @param timeAxisLabel  a label for the time axis (<code>null</code> permitted).
 * @param valueAxisLabel  a label for the value axis (<code>null</code> permitted).
 * @param dataset  the dataset for the chart (<code>null</code> permitted).
 * @param legend  a flag specifying whether or not a legend is required.
 *
 * @return a candlestick chart.
 */
public static JFreeChart createCandlestickChart(String title,
                                                String timeAxisLabel,
                                                String valueAxisLabel,
                                                OHLCDataset dataset,
                                                boolean legend) {

    ValueAxis timeAxis = new DateAxis(timeAxisLabel);
    NumberAxis valueAxis = new NumberAxis(valueAxisLabel);
    XYPlot plot = new XYPlot(dataset, timeAxis, valueAxis, null);
    plot.setRenderer(new CandlestickRenderer());
    JFreeChart chart = new JFreeChart(title, JFreeChart.DEFAULT_TITLE_FONT, plot, legend);

    return chart;

}
 

import org.jfree.data.xy.OHLCDataset; //导入依赖的package包/类
/**
 * Creates and returns a default instance of a high-low-open-close chart.
 *
 * @param title  the chart title (<code>null</code> permitted).
 * @param timeAxisLabel  a label for the time axis (<code>null</code> permitted).
 * @param valueAxisLabel  a label for the value axis (<code>null</code> permitted).
 * @param dataset  the dataset for the chart (<code>null</code> permitted).
 * @param legend  a flag specifying whether or not a legend is required.
 *
 * @return a high-low-open-close chart.
 */
public static JFreeChart createHighLowChart(String title,
                                            String timeAxisLabel,
                                            String valueAxisLabel,
                                            OHLCDataset dataset,
                                            boolean legend) {

    ValueAxis timeAxis = new DateAxis(timeAxisLabel);
    NumberAxis valueAxis = new NumberAxis(valueAxisLabel);
    HighLowRenderer renderer = new HighLowRenderer();
    renderer.setToolTipGenerator(new HighLowItemLabelGenerator());
    XYPlot plot = new XYPlot(dataset, timeAxis, valueAxis, renderer);
    JFreeChart chart = new JFreeChart(title, JFreeChart.DEFAULT_TITLE_FONT, plot, legend);

    return chart;

}
 

import org.jfree.data.xy.OHLCDataset; //导入依赖的package包/类
/**
 * Creates and returns a default instance of a candlesticks chart.
 *
 * @param title  the chart title (<code>null</code> permitted).
 * @param timeAxisLabel  a label for the time axis (<code>null</code> 
 *                       permitted).
 * @param valueAxisLabel  a label for the value axis (<code>null</code> 
 *                        permitted).
 * @param dataset  the dataset for the chart (<code>null</code> permitted).
 * @param legend  a flag specifying whether or not a legend is required.
 *
 * @return A candlestick chart.
 */
public static JFreeChart createCandlestickChart(String title,
                                                String timeAxisLabel,
                                                String valueAxisLabel,
                                                OHLCDataset dataset,
                                                boolean legend) {

    ValueAxis timeAxis = new DateAxis(timeAxisLabel);
    NumberAxis valueAxis = new NumberAxis(valueAxisLabel);
    XYPlot plot = new XYPlot(dataset, timeAxis, valueAxis, null);
    plot.setRenderer(new CandlestickRenderer());
    JFreeChart chart = new JFreeChart(title, JFreeChart.DEFAULT_TITLE_FONT,
            plot, legend);
    return chart;

}
 

import org.jfree.data.xy.OHLCDataset; //导入依赖的package包/类
/**
 * Creates and returns a default instance of a high-low-open-close chart.
 *
 * @param title  the chart title (<code>null</code> permitted).
 * @param timeAxisLabel  a label for the time axis (<code>null</code> 
 *                       permitted).
 * @param valueAxisLabel  a label for the value axis (<code>null</code> 
 *                        permitted).
 * @param dataset  the dataset for the chart (<code>null</code> permitted).
 * @param legend  a flag specifying whether or not a legend is required.
 *
 * @return A high-low-open-close chart.
 */
public static JFreeChart createHighLowChart(String title,
                                            String timeAxisLabel,
                                            String valueAxisLabel,
                                            OHLCDataset dataset,
                                            boolean legend) {

    ValueAxis timeAxis = new DateAxis(timeAxisLabel);
    NumberAxis valueAxis = new NumberAxis(valueAxisLabel);
    HighLowRenderer renderer = new HighLowRenderer();
    renderer.setBaseToolTipGenerator(new HighLowItemLabelGenerator());
    XYPlot plot = new XYPlot(dataset, timeAxis, valueAxis, renderer);
    JFreeChart chart = new JFreeChart(title, JFreeChart.DEFAULT_TITLE_FONT,
            plot, legend);
    return chart;

}
 

import org.jfree.data.xy.OHLCDataset; //导入依赖的package包/类
/**
 * Creates and returns a default instance of a high-low-open-close chart.
 *
 * @param title  the chart title (<code>null</code> permitted).
 * @param timeAxisLabel  a label for the time axis (<code>null</code>
 *                       permitted).
 * @param valueAxisLabel  a label for the value axis (<code>null</code>
 *                        permitted).
 * @param dataset  the dataset for the chart (<code>null</code> permitted).
 * @param legend  a flag specifying whether or not a legend is required.
 *
 * @return A high-low-open-close chart.
 */
public static JFreeChart createHighLowChart(String title,
        String timeAxisLabel, String valueAxisLabel, OHLCDataset dataset,
        boolean legend) {

    ValueAxis timeAxis = new DateAxis(timeAxisLabel);
    NumberAxis valueAxis = new NumberAxis(valueAxisLabel);
    HighLowRenderer renderer = new HighLowRenderer();
    renderer.setBaseToolTipGenerator(new HighLowItemLabelGenerator());
    XYPlot plot = new XYPlot(dataset, timeAxis, valueAxis, renderer);
    JFreeChart chart = new JFreeChart(title, JFreeChart.DEFAULT_TITLE_FONT,
            plot, legend);
    currentTheme.apply(chart);
    return chart;

}
 

import org.jfree.data.xy.OHLCDataset; //导入依赖的package包/类
/**
 * Creates and returns a default instance of a high-low-open-close chart.
 *
 * @param title  the chart title ({@code null} permitted).
 * @param timeAxisLabel  a label for the time axis ({@code null}
 *                       permitted).
 * @param valueAxisLabel  a label for the value axis ({@code null}
 *                        permitted).
 * @param dataset  the dataset for the chart ({@code null} permitted).
 * @param legend  a flag specifying whether or not a legend is required.
 *
 * @return A high-low-open-close chart.
 */
public static JFreeChart createHighLowChart(String title,
        String timeAxisLabel, String valueAxisLabel, OHLCDataset dataset,
        boolean legend) {

    ValueAxis timeAxis = new DateAxis(timeAxisLabel);
    NumberAxis valueAxis = new NumberAxis(valueAxisLabel);
    HighLowRenderer renderer = new HighLowRenderer();
    renderer.setDefaultToolTipGenerator(new HighLowItemLabelGenerator());
    XYPlot plot = new XYPlot(dataset, timeAxis, valueAxis, renderer);
    JFreeChart chart = new JFreeChart(title, JFreeChart.DEFAULT_TITLE_FONT,
            plot, legend);
    currentTheme.apply(chart);
    return chart;

}
 

import org.jfree.data.xy.OHLCDataset; //导入依赖的package包/类
/**
 * Creates and returns a default instance of a candlesticks chart.
 *
 * @param title  the chart title (<code>null</code> permitted).
 * @param timeAxisLabel  a label for the time axis (<code>null</code>
 *                       permitted).
 * @param valueAxisLabel  a label for the value axis (<code>null</code>
 *                        permitted).
 * @param dataset  the dataset for the chart (<code>null</code> permitted).
 * @param legend  a flag specifying whether or not a legend is required.
 *
 * @return A candlestick chart.
 */
public static JFreeChart createCandlestickChart(String title,
                                                String timeAxisLabel,
                                                String valueAxisLabel,
                                                OHLCDataset dataset,
                                                boolean legend) {

    ValueAxis timeAxis = new DateAxis(timeAxisLabel);
    NumberAxis valueAxis = new NumberAxis(valueAxisLabel);
    XYPlot plot = new XYPlot(dataset, timeAxis, valueAxis, null);
    plot.setRenderer(new CandlestickRenderer());
    JFreeChart chart = new JFreeChart(title, JFreeChart.DEFAULT_TITLE_FONT,
            plot, legend);
    currentTheme.apply(chart);
    return chart;

}
 

import org.jfree.data.xy.OHLCDataset; //导入依赖的package包/类
/**
 * Creates and returns a default instance of a high-low-open-close chart.
 *
 * @param title  the chart title (<code>null</code> permitted).
 * @param timeAxisLabel  a label for the time axis (<code>null</code>
 *                       permitted).
 * @param valueAxisLabel  a label for the value axis (<code>null</code>
 *                        permitted).
 * @param dataset  the dataset for the chart (<code>null</code> permitted).
 * @param legend  a flag specifying whether or not a legend is required.
 *
 * @return A high-low-open-close chart.
 */
public static JFreeChart createHighLowChart(String title,
                                            String timeAxisLabel,
                                            String valueAxisLabel,
                                            OHLCDataset dataset,
                                            boolean legend) {

    ValueAxis timeAxis = new DateAxis(timeAxisLabel);
    NumberAxis valueAxis = new NumberAxis(valueAxisLabel);
    HighLowRenderer renderer = new HighLowRenderer();
    renderer.setBaseToolTipGenerator(new HighLowItemLabelGenerator());
    XYPlot plot = new XYPlot(dataset, timeAxis, valueAxis, renderer);
    JFreeChart chart = new JFreeChart(title, JFreeChart.DEFAULT_TITLE_FONT,
            plot, legend);
    currentTheme.apply(chart);
    return chart;

}
 

import org.jfree.data.xy.OHLCDataset; //导入依赖的package包/类
private JFreeChart createCandlestickChart(OHLCDataset priceOHLCDataset) {
    final String title = "Chart";
    
    final ValueAxis timeAxis = new DateAxis("Date");
    final NumberAxis valueAxis = new NumberAxis("Price");
    valueAxis.setAutoRangeIncludesZero(false);
    valueAxis.setUpperMargin(0.0);
    valueAxis.setLowerMargin(0.0);
    XYPlot plot = new XYPlot(priceOHLCDataset, timeAxis, valueAxis, null);

    final CandlestickRenderer candlestickRenderer = new CandlestickRenderer();
    plot.setRenderer(candlestickRenderer);
    //plot.getRangeAxis().setAutoRange(true);
    
    
    // Give good width when zoom in, but too slow in calculation.
    ((CandlestickRenderer)plot.getRenderer()).setAutoWidthMethod(CandlestickRenderer.WIDTHMETHOD_SMALLEST);

    CombinedDomainXYPlot cplot = new CombinedDomainXYPlot(timeAxis);
    cplot.add(plot, 3);
    cplot.setGap(8.0);

    JFreeChart chart = new JFreeChart(title, JFreeChart.DEFAULT_TITLE_FONT, cplot, true);

    applyChartTheme(chart);

    // Handle zooming event.
    chart.addChangeListener(this.getChartChangeListner());

    return chart;        
}
 

import org.jfree.data.xy.OHLCDataset; //导入依赖的package包/类
private double getLowestLow(OHLCDataset dataset, int start, int end){
    double lowest;
    lowest = dataset.getLowValue(0,start);
    for(int i=1;i<=end;i++){
        if(dataset.getLowValue(0,i) < lowest){
            lowest = dataset.getLowValue(0,i);
        }
    }

    return lowest;
}
 

import org.jfree.data.xy.OHLCDataset; //导入依赖的package包/类
private double getHighestHigh(OHLCDataset dataset, int start, int end){
    double highest;
    highest = dataset.getHighValue(0,start);
    for(int i=1;i<=end;i++){
        if(dataset.getLowValue(0,i) > highest){
            highest = dataset.getHighValue(0,i);
        }
    }

    return highest;
}
 

import org.jfree.data.xy.OHLCDataset; //导入依赖的package包/类
/**
 * Initialises the renderer then returns the number of 'passes' through the data that the
 * renderer will require (usually just one).  This method will be called before the first
 * item is rendered, giving the renderer an opportunity to initialise any
 * state information it wants to maintain.  The renderer can do nothing if it chooses.
 *
 * @param g2  the graphics device.
 * @param dataArea  the area inside the axes.
 * @param plot  the plot.
 * @param dataset  the data.
 * @param info  an optional info collection object to return data back to the caller.
 *
 * @return The number of passes the renderer requires.
 */
public XYItemRendererState initialise(Graphics2D g2,
                                      Rectangle2D dataArea,
                                      XYPlot plot,
                                      XYDataset dataset,
                                      PlotRenderingInfo info) {
      
    // calculate the maximum allowed candle width from the axis...
    ValueAxis axis = plot.getDomainAxis();
    double x1 = axis.getLowerBound();
    double x2 = x1 + this.maxCandleWidthInMilliseconds;
    RectangleEdge edge = plot.getDomainAxisEdge();
    double xx1 = axis.valueToJava2D(x1, dataArea, edge);
    double xx2 = axis.valueToJava2D(x2, dataArea, edge);
    this.maxCandleWidth = Math.abs(xx2 - xx1); // Absolute value, since the relative x 
                                     // positions are reversed for horizontal orientation
    
    // calculate the highest volume in the dataset... 
    if (this.drawVolume) {
        OHLCDataset highLowDataset = (OHLCDataset) dataset;
        this.maxVolume = 0.0;
        for (int series = 0; series < highLowDataset.getSeriesCount(); series++) {
            for (int item = 0; item < highLowDataset.getItemCount(series); item++) {
                double volume = highLowDataset.getVolumeValue(series, item);
                if (volume > this.maxVolume) {
                    this.maxVolume = volume;
                }
                
            }    
        }
    }
    
    return new XYItemRendererState(info);
}
 

import org.jfree.data.xy.OHLCDataset; //导入依赖的package包/类
/**
 * Generates a tooltip text item for a particular item within a series.
 *
 * @param dataset  the dataset.
 * @param series  the series (zero-based index).
 * @param item  the item (zero-based index).
 *
 * @return the tooltip text.
 */
public String generateToolTip(XYDataset dataset, int series, int item) {

    String result = null;

    if (dataset instanceof OHLCDataset) {
        OHLCDataset d = (OHLCDataset) dataset;
        Number high = d.getHigh(series, item);
        Number low = d.getLow(series, item);
        Number open = d.getOpen(series, item);
        Number close = d.getClose(series, item);
        Number x = d.getX(series, item);

        result = d.getSeriesName(series);

        if (x != null) {
            Date date = new Date(x.longValue());
            result = result + "--> Date=" + this.dateFormatter.format(date);
            if (high != null) {
                result = result + " High=" + this.numberFormatter.format(high.doubleValue());
            }
            if (low != null) {
                result = result + " Low=" + this.numberFormatter.format(low.doubleValue());
            }
            if (open != null) {
                result = result + " Open=" + this.numberFormatter.format(open.doubleValue());
            }
            if (close != null) {
                result = result + " Close=" + this.numberFormatter.format(close.doubleValue());
            }
        }

    }

    return result;

}