Example usage for org.jfree.data.time RegularTimePeriod next

Introduction

In this page you can find the example usage for org.jfree.data.time RegularTimePeriod next.

Prototype

public abstract RegularTimePeriod next();

Source Link

Document

Returns the time period following this one, or null if some limit has been reached.

Usage

From source file:org.jfree.chart.demo.MultipleAxisDemo4.java

private static XYDataset createDataset(String s, double d, RegularTimePeriod regulartimeperiod, int i) {
    TimeSeries timeseries = new TimeSeries(s);
    RegularTimePeriod regulartimeperiod1 = regulartimeperiod;
    double d1 = d;
    for (int j = 0; j < i; j++) {
        timeseries.add(regulartimeperiod1, d1);
        regulartimeperiod1 = regulartimeperiod1.next();
        d1 *= 1.0D + (Math.random() - 0.495D) / 10D;
    }/*from w w  w  .  ja  v  a  2  s  . c  o m*/

    TimeSeriesCollection timeseriescollection = new TimeSeriesCollection();
    timeseriescollection.addSeries(timeseries);
    return timeseriescollection;
}

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From source file:cn.edu.thss.iise.bpmdemo.charts.SWTMultipleAxisDemo1.java

/**
 * Creates a sample dataset./*from   w w  w.j a v  a2s  .  co  m*/
 *
 * @param name
 *            the dataset name.
 * @param base
 *            the starting value.
 * @param start
 *            the starting period.
 * @param count
 *            the number of values to generate.
 *
 * @return The dataset.
 */
private static XYDataset createDataset(String name, double base, RegularTimePeriod start, int count) {

    TimeSeries series = new TimeSeries(name);
    RegularTimePeriod period = start;
    double value = base;
    for (int i = 0; i < count; i++) {
        series.add(period, value);
        period = period.next();
        value = value * (1 + (Math.random() - 0.495) / 10.0);
    }

    TimeSeriesCollection dataset = new TimeSeriesCollection();
    dataset.addSeries(series);

    return dataset;

}

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From source file:com.dreikraft.axbo.timeseries.TimeSeriesUtil.java

/**
 * Create a XYZ dataset from a time series with Y.
 *
 * @param source/* w w w  .j  a v  a2  s  . c  o  m*/
 * @return
 */
public static final XYZDataset createXYZTimeSeries(final TimeSeries source) {

    final RegularTimePeriod lastTimePeriod = source.getTimePeriod(source.getItemCount() - 1);
    // process all timeperiods including empty ones
    RegularTimePeriod t = source.getTimePeriod(0);
    final List<Double> zValuesList = new LinkedList<>();
    while (!(t.getFirstMillisecond() > lastTimePeriod.getFirstMillisecond())) {
        zValuesList.add(getValue(source, t));
        t = t.next();
    }
    final double[] xValues = new double[zValuesList.size()];
    final double[] yValues = new double[zValuesList.size()];
    final double[] zValues = new double[zValuesList.size()];
    t = source.getTimePeriod(0);
    for (int i = 0; i < zValuesList.size(); i++) {
        xValues[i] = t.getFirstMillisecond();
        yValues[i] = 0;
        zValues[i] = zValuesList.get(i);
        t = t.next();
    }
    final DefaultXYZDataset target = new DefaultXYZDataset();
    target.addSeries(0, new double[][] { xValues, yValues, zValues });

    return target;
}

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From source file:com.dreikraft.axbo.timeseries.TimeSeriesUtil.java

/**
 * Create a moving average time series from a given source series.
 *
 * @param source the source timeseries//www. j  a v  a2  s  .  c om
 * @param preLen number of timeperiods before current time period included in
 * moving average calculation
 * @param postLen number of timeperiods after current time period included in
 * moving average calculation
 * @return a moving average time series
 */
public static TimeSeries createMovingAverage(final TimeSeries source, final int preLen, final int postLen) {

    final int len = preLen + postLen + 1;
    final TimeSeries result = new TimeSeries(source.getKey());
    final RegularTimePeriod lastTimePeriod = source.getTimePeriod(source.getItemCount() - 1);

    // process all timeperiods including empty ones
    RegularTimePeriod t = source.getTimePeriod(0);
    while (!(t.getFirstMillisecond() > lastTimePeriod.getFirstMillisecond())) {

        // calculate the moving avg value for the current time period
        double value = getValue(source, t);
        RegularTimePeriod ti = t;
        for (int i = 0; i < preLen; i++) {
            ti = ti.previous();
            value += getValue(source, ti);
        }
        ti = t;
        for (int i = 0; i < postLen; i++) {
            ti = ti.next();
            value += getValue(source, ti);
        }

        // add the moving avg value to the included time periods
        result.addOrUpdate(t, value / len);
        t = t.next();
    }

    return result;
}

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From source file:org.jfree.chart.demo.MultipleDatasetDemo1.java

/**
 * Creates a random dataset.//ww  w. j  a  va  2 s  . c  o  m
 * 
 * @param name  the series name.
 * 
 * @return The dataset.
 */
private TimeSeriesCollection createRandomDataset(final String name) {
    final TimeSeries series = new TimeSeries(name);
    double value = 100.0;
    RegularTimePeriod t = new Day();
    for (int i = 0; i < 50; i++) {
        series.add(t, value);
        t = t.next();
        value = value * (1.0 + Math.random() / 100);
    }
    return new TimeSeriesCollection(series);
}

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From source file:org.jfree.chart.demo.SecondaryDatasetDemo1.java

/**
 * Creates a random dataset.//w  ww .j a  v a2s  .co m
 * 
 * @param name  the series name.
 * 
 * @return The dataset.
 */
private TimeSeriesCollection createRandomDataset(String name) {
    TimeSeries series = new TimeSeries(name);
    double value = 100.0;
    RegularTimePeriod t = new Day();
    for (int i = 0; i < 50; i++) {
        series.add(t, value);
        t = t.next();
        value = value * (1.0 + Math.random() / 100);
    }
    return new TimeSeriesCollection(series);
}

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From source file:org.jfree.chart.demo.InternalFrameDemo.java

/**
 * Creates a sample dataset./*from  w  w w . j av a  2 s  .c  o m*/
 * 
 * @param name  the dataset name.
 * @param base  the starting value.
 * @param start  the starting period.
 * @param count  the number of values to generate.
 *
 * @return The dataset.
 */
private XYDataset createDataset(final String name, final double base, final RegularTimePeriod start,
        final int count) {

    final TimeSeries series = new TimeSeries(name, start.getClass());
    RegularTimePeriod period = start;
    double value = base;
    for (int i = 0; i < count; i++) {
        series.add(period, value);
        period = period.next();
        value = value * (1 + (Math.random() - 0.495) / 10.0);
    }

    final TimeSeriesCollection dataset = new TimeSeriesCollection();
    dataset.addSeries(series);

    return dataset;

}

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From source file:org.jfree.chart.demo.CompassFormatDemo.java

/**
 * Creates a sample dataset./* w  w  w  .j  a  v  a  2  s  . c  om*/
 *
 * @param count  the item count.
 * 
 * @return the dataset.
 */
private XYDataset createForceDataset(final int count) {
    final TimeSeriesCollection dataset = new TimeSeriesCollection();
    final TimeSeries s1 = new TimeSeries("Wind Force", Minute.class);
    RegularTimePeriod start = new Minute();
    double force = 3.0;
    for (int i = 0; i < count; i++) {
        s1.add(start, force);
        start = start.next();
        force = Math.max(0.5, force + (Math.random() - 0.5) * 0.5);
    }
    dataset.addSeries(s1);
    return dataset;
}

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From source file:org.jfree.chart.demo.CompassFormatDemo.java

/**
 * Creates a sample dataset./*from   w  ww .ja  va2  s . c  om*/
 *
 * @param count  the item count.
 * 
 * @return the dataset.
 */
private XYDataset createDirectionDataset(final int count) {
    final TimeSeriesCollection dataset = new TimeSeriesCollection();
    final TimeSeries s1 = new TimeSeries("Wind Direction", Minute.class);
    RegularTimePeriod start = new Minute();
    double direction = 180.0;
    for (int i = 0; i < count; i++) {
        s1.add(start, direction);
        start = start.next();
        direction = direction + (Math.random() - 0.5) * 15.0;
        if (direction < 0.0) {
            direction = direction + 360.0;
        } else if (direction > 360.0) {
            direction = direction - 360.0;
        }
    }
    dataset.addSeries(s1);
    return dataset;
}

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From source file:org.jfree.chart.demo.TimeSeriesDemo13.java

/**
 * Creates a dataset containing random values at weekly intervals.
 *
 * @param items  the number of items in the dataset.
 * //from ww w  . j  a va 2s  .c  o m
 * @return the dataset.
 */
private XYDataset createDataset(final int items) {

    final TimeSeries s1 = new TimeSeries("Random Data", Week.class);
    RegularTimePeriod t = new Week();
    double v = 100.0;
    for (int i = 0; i < items; i++) {
        s1.add(t, v);
        v = v * (1 + ((Math.random() - 0.499) / 100.0));
        t = t.next();
    }

    final TimeSeriesCollection dataset = new TimeSeriesCollection(s1);
    dataset.setDomainIsPointsInTime(true);

    return dataset;

}

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