cust_dup_year: Annual dynamics for customer duplication
In southwick-associates/salicprep: Prepare Agency Data

Description Usage Arguments Details See Also

License system changes often lead to a spike in customer dups in comparing new and old data. It can be useful to be aware of this.

1	cust_dup_year(cust, cust_dup, sale)

`cust`	input customer table
`cust_dup`	table of customers (with dups) produced by `cust_dup_pull`
`sale`	sale table for exploring year-to-year duplication patterns

Note that this function might not reveal a break point (i.e., from a change to a new licensing system), the duplication identification would probably need to be iterative, so will probably need to rewrite this function to reveal such a pattern. This wasn't a priority in Dec 2019.

Other finalize production data: cust_dup_demo_plot(), cust_dup_demo(), cust_dup_identify(), cust_dup_nomissing(), cust_dup_pct(), cust_dup_pull(), cust_dup_samp(), res_id