search for: oidflag

...ost recent date from those 4 date columns into a new column (oiddate) using the mutate() function in the dplyr package. I am getting correct results (NA in the new column) if a given row has all NA's in the four columns. However, the issue is that the date value inserted into the new column (oidflag) is incorrect for 5 of the remaining 6 rows (with a non-NA value in at least 1 of the four columns). I would appreciate receiving your help toward resolving the issue. Please see the R console and the R script (reproducible example)below. Thanks in advance. Pradip ###### from the co...