gingVisitor.html#start(int, int, int, int, int, int)">start</a></strong>(int&nbsp;rows,
     int&nbsp;columns,
     int&nbsp;startRow,
     int&nbsp;endRow,
     int&nbsp;startColumn,
     int&nbsp;endColumn)</code>
<div class="block">Start visiting a matrix.</div>
</td>
</tr>
<tr class="altColor">
<td class="colFirst"><code><a href="../../../../../org/apache/commons/math3/linear/FieldMatrixChangingVisitor.html" title="type parameter in FieldMatrixChangingVisitor">T</a></code></td>
<td class="colLast"><code