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andybega / states

Create country-year/month/day panels consistent with the COW or Gleditsch & Ward independent states lists
https://andybeger.com/states/
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`plot_missing` error when input is `tbl_df` #2

Closed andybega closed 5 years ago

andybega commented 7 years ago

Do something like as.data.frame on the input so it doesn't choke on tbl_df input, with a completely uninformative error: 

Error in sort.list(y) : 'x' must be atomic for 'sort.list'
Have you called 'sort' on a list?