o/r/base/as.Date.html" class="external-link">as.Date</a></span><span class="op">(</span><span class="st">"2000-01-01"</span><span class="op">)</span>,</span></span>
<span class="r-in"><span>                 to <span class="op">=</span> <span class="fu"><a href="https://rdrr.io/r/base/as.Date.html" class="external-link">as.Date</a></span><span class="op">(</span><span class="st">"2020-01-01"</span><span class="op">)</span>,</span></span>
<span class="r-in"><span>                 by <span class="op">=</span> 