anchor"></a>thicken</h3>
<p><code>thicken</code> adds a column to a data frame that is of a higher <em>interval</em> than that of the original datetime variable. The interval in the <code>padr</code> context is the heartbeat of the data, the recurrence of the observations.<a href="#fn1" class="footnote-ref" id="fnref1"><sup>1</sup></a> The original variable “time_stamp” had the interval <em>second</em>, the added variable was of interval <em>day</em>.</p>
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