vides an appropriate fitting model
Else it will throw an error</p>
</dd></dl>

<dl class="py method">
<dt class="sig sig-object py" id="LUCI.LuciFit.Fit.check_lengths">
<span class="sig-name descname"><span class="pre">check_lengths</span></span><span class="sig-paren">(</span><span class="sig-paren">)</span><a class="headerlink" href="#LUCI.LuciFit.Fit.check_lengths" title="Link to this definition"></a></dt>
<dd><p>This function checks to see that the length of the sigma_rel and vel_rel arguments are co