我确实有:
a <- "Submitted 28 March, 2022; originally announced March 2022."
但我只想有约会,所以:
"28 March, 2022"
或者那个"Submitted 28 March, 2022"
你能帮我吗?
提前致谢!
您可以使用
parsedate
套餐:
a <- "Submitted 28 March, 2022; originally announced March 2022."
parsedate::parse_date(a)
# "2022-03-28 UTC"
你可以这样做:
gsub(";.*", "", a)
“2022 年 3 月 28 日提交”
或者
gsub("Submitted |;.*", "", a)
“2022 年 3 月 28 日”