com.charts.MaxChart.java Source code

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Here is the source code for com.charts.MaxChart.java

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package com.charts;

import com.std.DayRange;
import com.std.Index;
import com.std.YStockQuote;
import java.awt.Color;
import java.awt.Dimension;
import java.text.DateFormat;
import java.text.ParseException;
import java.text.SimpleDateFormat;
import java.util.ArrayList;
import java.util.Calendar;
import java.util.Collections;
import java.util.Date;
import java.util.TimeZone;
import javax.swing.JFrame;
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.NumberAxis;
import org.jfree.chart.axis.SegmentedTimeline;
import org.jfree.chart.axis.ValueAxis;
import org.jfree.chart.plot.XYPlot;
import org.jfree.chart.renderer.xy.CandlestickRenderer;
import org.jfree.chart.renderer.xy.StandardXYItemRenderer;
import org.jfree.chart.title.LegendTitle;
import org.jfree.data.time.Day;
import org.jfree.data.time.MovingAverage;
import org.jfree.data.time.TimeSeries;
import org.jfree.data.time.TimeSeriesCollection;
import org.jfree.data.xy.AbstractXYDataset;
import org.jfree.data.xy.DefaultOHLCDataset;
import org.jfree.data.xy.OHLCDataItem;
import org.jfree.data.xy.XYDataset;
import org.jfree.ui.RectangleEdge;

/**
 *
 * @author Eric
 */
public class MaxChart {

    TimeSeries close = new TimeSeries("Closing Price");
    ChartPanel chartPanel;

    public MaxChart(YStockQuote currentStock) throws ParseException {

        DateAxis domainAxis = new DateAxis("Date");
        NumberAxis rangeAxis = new NumberAxis("Price");
        CandlestickRenderer renderer = new CandlestickRenderer();
        XYDataset dataset = getDataSet(currentStock);

        XYPlot mainPlot = new XYPlot(dataset, domainAxis, rangeAxis, renderer);

        //Do some setting up, see the API Doc
        renderer.setSeriesPaint(0, Color.BLACK);

        renderer.setDrawVolume(false);
        rangeAxis.setAutoRangeIncludesZero(false);

        domainAxis.setDateFormatOverride(new SimpleDateFormat("dd-MM-yy"));
        domainAxis.setTickMarkPosition(DateTickMarkPosition.MIDDLE);

        //Now create the chart and chart panel
        JFreeChart chart = new JFreeChart(currentStock.get_name(), null, mainPlot, false);
        chartPanel = new ChartPanel(chart);
        chartPanel.setPreferredSize(new Dimension(900, 400));

        XYPlot plot = (XYPlot) chart.getPlot();
        LegendTitle legend = new LegendTitle(plot);
        chart.addLegend(legend);
        chart.getLegend().setVisible(true);
        chart.getLegend().setPosition(RectangleEdge.BOTTOM);

        ValueAxis yAxis = (ValueAxis) plot.getRangeAxis();
        DateAxis xAxis = (DateAxis) plot.getDomainAxis();

        xAxis.setDateFormatOverride(new SimpleDateFormat("MMM y"));
        xAxis.setAutoTickUnitSelection(true);
        xAxis.setAutoRange(true);
        renderer.setAutoWidthFactor(0.5);
        renderer.setUpPaint(Color.green);
        renderer.setDownPaint(new Color(0xc0, 0x00, 0x00));
        renderer.setSeriesPaint(0, Color.black);
        StandardXYItemRenderer renderer1 = new StandardXYItemRenderer();
        renderer1.setSeriesPaint(0, Color.BLUE);
        TimeSeries movingAverage30 = MovingAverage.createMovingAverage(close, "MA(30)", 30, 0);
        Double currMA30 = (Double) movingAverage30.getDataItem(movingAverage30.getItemCount() - 1).getValue();
        currMA30 = Math.round(currMA30 * 100.0) / 100.0;
        movingAverage30.setKey("MA(30): " + currMA30);
        TimeSeriesCollection collection = new TimeSeriesCollection();
        collection.addSeries(movingAverage30);
        plot.setDataset(1, collection);
        plot.setRenderer(1, renderer1);

        chartPanel.revalidate();
        chartPanel.repaint();
        chartPanel.revalidate();
        chartPanel.repaint();
    }

    protected AbstractXYDataset getDataSet(YStockQuote currentStock) throws ParseException {
        //This is the dataset we are going to create
        DefaultOHLCDataset result = null;
        //This is the data needed for the dataset
        OHLCDataItem[] data;

        //This is where we go get the data, replace with your own data source
        data = getData(currentStock);

        //Create a dataset, an Open, High, Low, Close dataset
        result = new DefaultOHLCDataset(currentStock.get_symbol(), data);

        return result;
    }

    //This method uses yahoo finance to get the OHLC data
    protected OHLCDataItem[] getData(YStockQuote currentStock) throws ParseException {
        ArrayList<OHLCDataItem> dataItems = new ArrayList<OHLCDataItem>();
        DateFormat df;
        if (currentStock instanceof Index)
            df = new SimpleDateFormat("y-MM-dd");
        else
            df = new SimpleDateFormat("dd-MM-yy");
        ArrayList<String> historicalData = currentStock.get_historical_data();
        int startIndex = historicalData.size() - 1;
        while (startIndex > 0) {
            String[] data = historicalData.get(startIndex).split(",");

            Date date = df.parse(data[0]);
            double open = Double.parseDouble(data[1]);
            double high = Double.parseDouble(data[2]);
            double low = Double.parseDouble(data[3]);
            double close = Double.parseDouble(data[4]);
            this.close.addOrUpdate(new Day(date), close);
            double volume;
            try {
                volume = Double.parseDouble(data[5]);
            } catch (NumberFormatException nfe) {
                volume = 0;
            }
            OHLCDataItem item = new OHLCDataItem(date, open, high, low, close, volume);
            dataItems.add(item);
            startIndex -= 3;
        }

        OHLCDataItem[] OHLCData = dataItems.toArray(new OHLCDataItem[dataItems.size()]);
        return OHLCData;
    }

    public ChartPanel getChartPanel() {
        return this.chartPanel;
    }
}