Method getRowView

JSAT/src/jsat/linear/Matrix.java:697–741

Obtains a vector that is backed by this , at very little memory cost. Mutations to this vector will alter the values stored in the matrix, and vice versa. @param r the row to obtain a view of @return a vector backed by the specified row of the matrix

(final int r)

     * @return a vector backed by the specified row of the matrix
     */
    public Vec getRowView(final int r)
    {
        final Matrix M = this;
        return new Vec() 
        {

            /**
			 * 
			 */
			private static final long serialVersionUID = 8484494698777822563L;

			@Override
            public int length()
            {
                return M.cols();
            }

            @Override
            public double get(int index)
            {
                return M.get(r, index);
            }

            @Override
            public void set(int index, double val)
            {
                M.set(r, index, val);
            }

            @Override
            public boolean isSparse()
            {
                return M.isSparce();
            }

            @Override
            public Vec clone()
            {
                if(M.isSparce())
                    return new SparseVector(this);
                else
                    return new DenseVector(this);
            }
        };
    }
    
    @Override
    public String toString()