is.isoweek | R Documentation |
Take a numeric vector and return TRUE
if values are valid ISO week numbers (of the
form YYYYWW), or FALSE
otherwise.
is.isoweek(x)
x |
A numeric vector of ISO week numbers (of format YYYYWW) |
A logical vector of the same length as x
is.isoweek(c(202053, 202153)) # returns c(TRUE, FALSE)
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