在 R 中将 yyyy-mm-dd hh:mm:ss 转换为 yyyymmddhhmmss

Question

I have a data x . It has a column time . This column has yyyy-mm-dd hh:mm:ss expression.

I want make this column has yyyymmddhhmmss expression. For example, 2021-12-01 00:00:00 should be 20211201000000 . I use R programming. How can I do?

Answer 1

We may use format after converting to Datetime class

x$time <- format(as.POSIXct(x$time), "%Y%m%d%H%M%S")

Answer 2

Delete non-digits.

gsub('\\D', '', '2021-12-01 00:00:00')
# [1] "20211201000000"