Example usage for org.apache.commons.math3.stat.descriptive MultivariateSummaryStatistics getMean

Introduction

In this page you can find the example usage for org.apache.commons.math3.stat.descriptive MultivariateSummaryStatistics getMean.

Prototype

public double[] getMean() 

Source Link

Document

Returns an array whose i^th entry is the mean of the i^th entries of the arrays that have been added using #addValue(double[])

Usage

From source file:org.dawnsci.spectrum.ui.processing.AverageProcess.java

@Override
public List<IContain1DData> process(List<IContain1DData> list) {

    list = SpectrumUtils.getCompatibleDatasets(list);

    if (list == null)
        return null;

    IDataset x0 = list.get(0).getxDataset();

    StringBuilder sb = new StringBuilder();
    sb.append("Average of: ");
    sb.append("\n");
    MultivariateSummaryStatistics ms = new MultivariateSummaryStatistics(x0.getSize(), false);
    for (IContain1DData file : list) {

        sb.append(file.getName() + ":");

        for (IDataset ds : file.getyDatasets()) {

            sb.append(ds.getName() + ":");

            DoubleDataset dd;/*from   w  w w  .  j  a v  a 2  s  .  co  m*/
            if (ds instanceof DoubleDataset)
                dd = (DoubleDataset) ds;
            else {
                dd = (DoubleDataset) DatasetUtils.cast(ds, Dataset.FLOAT64);
            }
            double[] raw = dd.getData();
            ms.addValue(raw);
        }

        sb.deleteCharAt(sb.length() - 1);
        sb.deleteCharAt(sb.length() - 1);
        sb.append("\n");
    }
    List<IDataset> sets = new ArrayList<IDataset>();
    Dataset dd = DatasetFactory.createFromObject(ms.getMean());

    dd.setName("Average");
    sets.add(dd);

    String shortName = "Average: " + list.get(0).getName() + " to " + list.get(list.size() - 1).getName();

    return Arrays.asList(new IContain1DData[] {
            new Contain1DDataImpl(x0, sets, shortName, sb.toString() + "[" + sets.hashCode() + "]") });

}

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From source file:org.dawnsci.spectrum.ui.utils.SpectrumUtils.java

public static ISpectrumFile averageSpectrumFiles(List<IContain1DData> files, IPlottingSystem<?> system) {
    files = getCompatibleDatasets(files);

    if (files == null)
        return null;

    IDataset x0 = files.get(0).getxDataset();

    StringBuilder sb = new StringBuilder();
    sb.append("Average of: ");
    sb.append("\n");
    MultivariateSummaryStatistics ms = new MultivariateSummaryStatistics(x0.getSize(), false);
    for (IContain1DData file : files) {

        sb.append(file.getName() + ":");

        for (IDataset ds : file.getyDatasets()) {

            sb.append(ds.getName() + ":");

            DoubleDataset dd;/*from w ww. j av  a2s  .  c  o  m*/
            if (ds instanceof DoubleDataset)
                dd = (DoubleDataset) ds;
            else {
                dd = (DoubleDataset) DatasetUtils.cast(ds, Dataset.FLOAT64);
            }
            double[] raw = dd.getData();
            ms.addValue(raw);
        }

        sb.deleteCharAt(sb.length() - 1);
        sb.deleteCharAt(sb.length() - 1);
        sb.append("\n");
    }
    List<IDataset> sets = new ArrayList<IDataset>();
    Dataset dd = DatasetFactory.createFromObject(ms.getMean());

    dd.setName("Average");
    sets.add(dd);

    String shortName = "Average: " + files.get(0).getName() + " to " + files.get(files.size() - 1).getName();

    return new SpectrumInMemory(sb.toString() + "[" + sets.hashCode() + "]", shortName, x0, sets, system);
}

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