Examples of cern.colt.matrix.DoubleMatrix2D.zMult()

cern.colt.matrix.DoubleMatrix2D.zMult()
Linear algebraic matrix-vector multiplication; z = A * y; Equivalent to return A.zMult(y,z,1,0);

  DoubleFactory2D f = DoubleFactory2D.dense;
  DoubleMatrix1D vector = new DenseDoubleMatrix1D(data);
  DoubleMatrix2D matrix = f.make(arrMatrix);
  DoubleMatrix1D res = vector.like(matrix.rows());
  
  matrix.zMult(vector,res);


  System.out.println(res);
}
/**
 */

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  DoubleMatrix1D vector = new DenseDoubleMatrix1D(data);
  DoubleMatrix2D matrix = f.make(arrMatrix);
  DoubleMatrix1D res = vector.like(matrix.rows());
  
  matrix.zMult(vector,res);


  System.out.println(res);
}
/**
 */

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  DoubleFactory2D f = DoubleFactory2D.dense;
  DoubleMatrix1D vector = new DenseDoubleMatrix1D(data);
  DoubleMatrix2D matrix = f.make(arrMatrix);
  DoubleMatrix1D res = vector.like(matrix.rows());
  
  matrix.zMult(vector,res);


  System.out.println(res);
}
/**
 */

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  DoubleMatrix1D vector = new DenseDoubleMatrix1D(data);
  DoubleMatrix2D matrix = f.make(arrMatrix);
  DoubleMatrix1D res = vector.like(matrix.rows());
  
  matrix.zMult(vector,res);


  System.out.println(res);
}
/**
 */

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      // Calculer la racine carree des valeurs propres
      for (int i = 0; i < D.rows(); ++i)
         D.setQuick (i, i, Math.sqrt (lambda[i]));
      DoubleMatrix2D P = sv.getV();
      // Multiplier par la matrice orthogonale (ici P)
      return P.zMult (D, null);
   }




   /**
    * Solve the triangular matrix equation <SPAN CLASS="MATH"><I>UX</I> = <I>B</I></SPAN> for <SPAN CLASS="MATH"><I>X</I></SPAN>.

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      for (int i = 0; i < D.rows(); i++){
         sortedEigenvalues[i] = D.getQuick (i, i);
         D.setQuick (i, i, Math.sqrt (D.getQuick (i, i)));
      }
      DoubleMatrix2D P = sv.getV();   // right factor matrix
      return P.zMult (D, null).toArray ();
   }


   /**
    * Returns the sorted eigenvalues obtained in the PCA decomposition.
    *

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      for (int i = 0; i < D.rows(); ++i) {
         lambda[i] = D.getQuick (i, i);
         D.setQuick (i, i, Math.sqrt (D.getQuick (i, i)));
      }
      DoubleMatrix2D P = svd.getV();
      return P.zMult (D, null);
   }


   private void initL() {
      if (mu.length != sigma.rows() || mu.length != sigma.columns())
         throw new IllegalArgumentException

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      // Calculer la racine carree des valeurs propres
      for (int i = 0; i < D.rows(); ++i)
         D.setQuick (i, i, Math.sqrt (D.getQuick (i, i)));
      DoubleMatrix2D P = sv.getV();
      // Multiplier par la matrice orthogonale (ici P)
      return P.zMult (D, null);
   }




   /**
    * Returns the matrix

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