I have a date column in weather database from different sources and want to calculate average amplitude of TMAX AND TMIN in new column with this code:
mutate(month = month(DATE)).
Error occurred like:
Error in mutate():
! Problem while computing month = month(DATE).
Caused by error in month():
! could not find function "month"
Run rlang::last_error() to see where the error occurred.
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Murodjon
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