ombine into a single observations sequence</span></span></span>
<span class="r-in"><span>  <span class="va">observations</span> <span class="op">&lt;-</span> <span class="fu"><a href="https://rdrr.io/r/base/c.html" class="external-link">c</a></span><span class="op">(</span><span class="va">random_increasing_obs</span>, <span class="va">peak</span>, <span class="va">random_decreasing_obs</span><span class="op">)</span></span></span>
<span class="r-in"><span></span></span>
<span class="r-in"><span> <span clas