  y <span class="op">=</span> <span class="va">GLI</span>,</span>
<span>    grp <span class="op">=</span> <span class="va">Plot</span>,</span>
<span>    fn <span class="op">=</span> <span class="st">"fn_lin_pl_lin2"</span>,</span>
<span>    parameters <span class="op">=</span> <span class="va">initial_vals</span>,</span>
<span>    lower <span class="op">=</span> <span class="va">lower_bounds</span>,</span>
<span>    upper <span class="op">=</span> <span class="va">upper_bounds</span>,</span>
<span>    metho