Example usage for org.apache.commons.math.linear Array2DRowRealMatrix getDataRef

Introduction

In this page you can find the example usage for org.apache.commons.math.linear Array2DRowRealMatrix getDataRef.

Prototype

public double[][] getDataRef() 

Source Link

Document

Returns a reference to the underlying data array.

Usage

From source file:hu.sztaki.incremental.ml.streaming.imsr.MatrixVectorPairSource.java

@Override
public void invoke(Collector<Tuple2<double[][], double[][]>> out) throws Exception {
    File f = new File(path);
    if (!f.exists()) {
        System.err.println(path + " does not exist.");
        System.exit(1);/*w w  w.j a va 2s.  co  m*/
    }
    Scanner s = initCsvScanner(new Scanner(f));
    String firstLine = s.nextLine();
    Scanner firstLineScanner = initCsvScanner(new Scanner(firstLine));
    for (indepDim = 0; firstLineScanner.hasNext(); firstLineScanner.next(), indepDim++)
        ;
    indepDim--;
    while (s.hasNext()) {
        Array2DRowRealMatrix X = new Array2DRowRealMatrix(batchSize, indepDim);
        Array2DRowRealMatrix y = new Array2DRowRealMatrix(batchSize, 1);
        readMatricesSideBySide(s, X, y);
        out.collect(new Tuple2<double[][], double[][]>(X.getDataRef(), y.getDataRef()));
    }
    s.close();
    out.close();
}

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From source file:gephi.spade.panel.FCSOperations.java

/**
 * T-distribution between selected nodes and all nodes
 *///  ww  w . j ava 2 s  . c  o m
private double tTest(Array2DRowRealMatrix selectedEvents, Array2DRowRealMatrix allEvents, int attribute) {

    TTestImpl tTest = new TTestImpl();
    try {
        return tTest.t(selectedEvents.getDataRef()[attribute], allEvents.getDataRef()[attribute]);
    } catch (IllegalArgumentException ex) {
        //CyLogger.getLogger(FCSOperations.class.getName()).error(null, ex);
    }
    return 0.0;
}

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