javatest.IndicatorsToChart.java Source code

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Here is the source code for javatest.IndicatorsToChart.java

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package javatest;

import eu.verdelhan.ta4j.Indicator;
import eu.verdelhan.ta4j.Decimal;
import eu.verdelhan.ta4j.Tick;
import eu.verdelhan.ta4j.TimeSeries;
import eu.verdelhan.ta4j.indicators.simple.ClosePriceIndicator;
import eu.verdelhan.ta4j.indicators.trackers.bollingerbands.BollingerBandsLowerIndicator;
import eu.verdelhan.ta4j.indicators.trackers.bollingerbands.BollingerBandsMiddleIndicator;
import eu.verdelhan.ta4j.indicators.trackers.bollingerbands.BollingerBandsUpperIndicator;
import java.text.SimpleDateFormat;
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.plot.XYPlot;
import org.jfree.data.time.Day;
import org.jfree.data.time.TimeSeriesCollection;
import org.jfree.ui.ApplicationFrame;
import org.jfree.ui.RefineryUtilities;
import ta4jexamples.loaders.CsvTicksLoader;
import eu.verdelhan.ta4j.indicators.trackers.SMAIndicator;

/**
 *
 * @author christian
 */

public class IndicatorsToChart {

    /**
     * Builds a JFreeChart time series from a Ta4j time series and an indicator.
     * @param tickSeries the ta4j time series
     * @param indicator the indicator
     * @param name the name of the chart time series
     * @return the JFreeChart time series
     */
    private static org.jfree.data.time.TimeSeries buildChartTimeSeries(TimeSeries tickSeries,
            Indicator<Decimal> indicator, String name) {
        org.jfree.data.time.TimeSeries chartTimeSeries = new org.jfree.data.time.TimeSeries(name);
        for (int i = 0; i < tickSeries.getTickCount(); i++) {
            Tick tick = tickSeries.getTick(i);
            chartTimeSeries.add(new Day(tick.getEndTime().toDate()), indicator.getValue(i).toDouble());
        }
        return chartTimeSeries;
    }

    /**
     * Displays a chart in a frame.
     * @param chart the chart to be displayed
     */
    private static void displayChart(JFreeChart chart) {
        // Chart panel
        ChartPanel panel = new ChartPanel(chart);
        panel.setFillZoomRectangle(true);
        panel.setMouseWheelEnabled(true);
        panel.setPreferredSize(new java.awt.Dimension(1000, 540));
        // Application frame
        ApplicationFrame frame = new ApplicationFrame("neli - Indicators to chart");
        frame.setContentPane(panel);
        frame.pack();
        RefineryUtilities.centerFrameOnScreen(frame);
        frame.setVisible(true);
    }

    public static void main(String[] args) {

        /**
         * Getting time series
         */
        TimeSeries series = CsvTicksLoader.loadAppleIncSeries();

        /**
         * Creating indicators
         */
        // Close price
        ClosePriceIndicator closePrice = new ClosePriceIndicator(series);
        // Bollinger bands
        BollingerBandsMiddleIndicator middleBBand = new BollingerBandsMiddleIndicator(closePrice);
        BollingerBandsLowerIndicator lowBBand = new BollingerBandsLowerIndicator(middleBBand, closePrice);
        BollingerBandsUpperIndicator upBBand = new BollingerBandsUpperIndicator(middleBBand, closePrice);
        SMAIndicator ind = new SMAIndicator(closePrice, 240);
        /**
         * Building chart dataset
         */
        TimeSeriesCollection dataset = new TimeSeriesCollection();
        dataset.addSeries(buildChartTimeSeries(series, ind, "sms "));
        dataset.addSeries(buildChartTimeSeries(series, closePrice, "close"));
        // dataset.addSeries(buildChartTimeSeries(series, upBBand, "High Bollinger Band"));

        /**
         * Creating the chart
         */
        JFreeChart chart = ChartFactory.createTimeSeriesChart("Neli ist lieb", // title
                "Date", // x-axis label
                "Price Per Unit", // y-axis label
                dataset, // data
                true, // create legend?
                true, // generate tooltips?
                false // generate URLs?
        );
        XYPlot plot = (XYPlot) chart.getPlot();
        DateAxis axis = (DateAxis) plot.getDomainAxis();
        axis.setDateFormatOverride(new SimpleDateFormat("yyyy-MM-dd"));

        /**
         * Displaying the chart
         */
        displayChart(chart);
    }

}