an class="va">cases</span>,</span>
<span>  time <span class="op">=</span> <span class="va">tsd_data</span><span class="op">$</span><span class="va">time</span>,</span>
<span>  population <span class="op">=</span> <span class="fu"><a href="https://rdrr.io/r/base/seq.html" class="external-link">seq</a></span><span class="op">(</span>from <span class="op">=</span> <span class="fl">1000000</span>, by <span class="op">=</span> <span class="fl">1000</span>, length.out <span class="op">=</span> <span class="fu"><a