analysed can be
specified in <strong><code>id.plots</code></strong> by inserting a
vector containing the plot identification numbers. If not specified,
this argument is set to <code>id.plots = NULL</code> and all plots will
be considered.</p>
<p>Two detection functions are fitted, that are the half normal and
hazard rate functions, with and without <span class="math inline">\(dbh\)</span> as covariate. These functions
describe the decreasing detection probability with increasing distance.
The probabilities 