op">(</span><span class="va">dat</span>,Qmatrix<span class="op">=</span><span class="va">Qmatrix</span>, maxiter<span class="op">=</span><span class="fl">50</span>, irtmodel<span class="op">=</span><span class="st">"comp"</span>,</span>
<span>           theta.k<span class="op">=</span><span class="va">theta.k</span>, theta.kDES<span class="op">=</span><span class="va">theta.kDES</span>, est.a<span class="op">=</span><span class="st">"2PL"</span> <span class="op">)</span></span>
<span><span class="fu"><a hre