lumn"></a> Matrix Column</h2>

<h4>Description</h4>

<p>The templated class <code>matrix_column&lt;M&gt;</code> allows
addressing a column of a matrix.</p>

<h4>Example</h4>

<pre>
#include &lt;boost/numeric/ublas/matrix.hpp&gt;<br>
#include &lt;boost/numeric/ublas/io.hpp&gt;<br>
<br>
int main () {<br>
    using namespace boost::numeric::ublas;<br>
    matrix&lt;double&gt; m (3, 3);<br>
    for (unsigned j = 0; j &lt; m.size2 (); ++ j) {<br>
        matrix_column&lt;matrix&lt;double&gt; &gt; mc (m, j);<br>
