Description Usage Arguments Details Value Author(s)
mergeByDate function adds new column to ds that contains VAR from nearest past DATE for SID to each row and returns ds.
1 | mergeByDate(ds, ds2add)
|
ds |
Data.frame to be added to and returned. |
ds2add |
Data to pull covariates from and merge into |
Long description.
Data.frame ds
with an added column from ds2add
.
Samuel Callisto calli055@umn.edu mergeByDate()
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