t<a class="anchor" aria-label="anchor" href="#data-format"></a></h2>



<p>The argument to <code>data</code> can be specified using the following formats.</p>
<dl><dt><code>data</code> as a <code>NULL</code> value</dt>
<dd><p>connection
data should be calculated automatically
using the <code><a href="adjacency_matrix.html">adjacency_matrix()</a></code> function. This is the default
argument and means that all adjacent planning units are treated
as potentially dispersible for all features.
Note that the conn