Examples of DoubleMatrix2D

cern.colt.matrix.DoubleMatrix2D

Abstract base class for 2-d matrices holding double elements. First see the package summary and javadoc tree view to get the broad picture.

A matrix has a number of rows and columns, which are assigned upon instance construction - The matrix's size is then rows()*columns(). Elements are accessed via [row,column] coordinates. Legal coordinates range from [0,0] to [rows()-1,columns()-1]. Any attempt to access an element at a coordinate column<0 || column>=columns() || row<0 || row>=rows() will throw an IndexOutOfBoundsException.

Note that this implementation is not synchronized. @author wolfgang.hoschek@cern.ch @version 1.0, 09/24/99

com.opengamma.analytics.math.matrix.DoubleMatrix2D

A minimal implementation of a 2D matrix of doubles.

org.apache.mahout.math.matrix.DoubleMatrix2D

@deprecated until unit tests are in place. Until this time, this class/interface is unsupported.

    checkRowIndexes(rowIndexes);
    checkColumnIndexes(columnIndexes);
    final int[] rix = rowIndexes;
    final int[] cix = columnIndexes;


    DoubleMatrix2D view = new WrapperDoubleMatrix2D(this) {
      @Override
      public double getQuick(int i, int j) {
        return content.get(rix[i], cix[j]);
      }

  @Override
  public DoubleMatrix2D viewStrides(final int theRowStride, final int theColumnStride) {
    if (theRowStride <= 0 || theColumnStride <= 0) {
      throw new IndexOutOfBoundsException("illegal stride");
    }
    DoubleMatrix2D view = new WrapperDoubleMatrix2D(this) {
      @Override
      public double getQuick(int row, int column) {
        return content.get(theRowStride * row, theColumnStride * column);
      }

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Examples of DoubleMatrix2D

Examples of org.apache.mahout.math.matrix.DoubleMatrix2D

Examples of org.apache.mahout.math.matrix.DoubleMatrix2D