public static RealMatrix rbind (RealMatrix m1, RealMatrix m2) {
        return MatrixUtils.createRealMatrix(ArrayUtils.addAll(m1.getData(), m2.getData()));
    }
public static RealMatrix rbind ( RealMatrix m1 , RealMatrix m2 ) { return MatrixUtils . createRealMatrix ( ArrayUtils . addAll ( m1 . getData ( ) , m2 . getData ( ) ) ) ; }
Appends to matrices by rows.

@param m1 The first matrix
@param m2 The second matrix.
@return Returns the new row-bound matrix.