日期不能转换为标准格式
> strptime(x1, "%B %d, %Y %H:%M")
[1] NA
> x1 <- "Jan 1, 2016 01:01"
>
> strptime(x1, "%B %d, %Y %H:%M")
[1] NA
> x1 <- "Jan 1, 2016 01:01"
>
> strptime(x1, "%B %d, %Y %H:%M")
[1] NA
> strptime(x1, "%B %d, %Y %H:%M")
[1] NA
> x1 <- "Jan 1, 2016 01:01"
>
> strptime(x1, "%B %d, %Y %H:%M")
[1] NA
> x1 <- "Jan 1, 2016 01:01"
>
> strptime(x1, "%B %d, %Y %H:%M")
[1] NA
2019-03-29
举报