log</code>) or the
    logistic link function (<code>logit</code>).</p></dd>

<dt>Xlambda_positive</dt>
<dd><p>Optional vector of logical indicating which
    elements of \(\bold{\lambda}_x\) should be constrained to be
positive.</p></dd>

<dt>regular_type</dt>
<dd><p>Regularization method which can be <code>lasso</code>,
<code>scad</code> or <code>mcp</code>. See <code><a href="gdina.html">gdina</a></code> for more
information and references.</p></dd>

<dt>regular_lam</dt>
<dd><p>Numeric. Regularization pa