</code> values (i.e., one or zero). Cells that occur along the
matrix diagonal have no effect on the solution at all because each
planning unit cannot be a connected with itself. Note that pairs
of connected planning units are treated as being potentially dispersible
for all features.</p></dd>


<dt><code>data</code> as a <code>data.frame</code> object</dt>
<dd><p>containing columns that are named
<code>"id1"</code>, <code>"id2"</code>, and <code>"boundary"</code>. Here, each row
denotes the connectivity be