;-</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">'2007-01-01'</span><span class="op">)</span></span>
<span class="r-in"><span class="va">rfm_customer</span> <span class="op">&lt;-</span> <span class="fu"><a href="rfm_table_customer.html">rfm_table_customer</a></span><span class="op">(</span><span class="va">rfm_data_customer</span>, <span class="va">customer_id</span>,</span>
<span class="r-in"><span cl