[R] Failed to convert text to date

[Dirk Eddelbuettel]

On 31 May 2025 at 22:02, Christofer Bogaso wrote:
| I tried to convert a date-like string to date as below
| 
| as.Date("202012", format = "%y%m")
| 
| This gives NA
| 
| Could you please help why I am getting NA value?

A _Date_ is comprised of three values for _year_, _month_ and _day_.

What you supplied does not match that requirement.

Hence the failure you see, and one way to overcome this (by specifying an
arbitrary day, here the first):

  > as.Date("202012", "%Y%m")
  [1] NA
  > as,Date(paste0("202012", "01"), "%Y%m%d")
  [1] "2020-12-01"
  > 

even when we correct the inadequate '%y' parser others have pointed out.

Dirk

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