如何在R中创建一个日期范围(How to create a range of dates in R)

如何在R中创建一个日期范围(How to create a range of dates in R)

从两个整数(1, 5)可以按照以下方式创建一个范围

1:5

[1] 1 2 3 4 5

如果您提供两个日期("2014-09-04 JST", "2014-09-11 JST")如何制作一系列日期

输出必须是

[1]（“2014-09-04 JST”，“2014-09-05 JST”，“2014-09-06 JST”，“2014-09-07 JST”，“2014-09-08 JST”）

From two integers (1, 5) one can create a range in the following way

1:5

[1] 1 2 3 4 5

How can you make a range of dates if you are give two dates ("2014-09-04 JST", "2014-09-11 JST")

The output must be

[1] ("2014-09-04 JST", "2014-09-05 JST", "2014-09-06 JST", "2014-09-07 JST", "2014-09-08 JST")

最满意答案

这有帮助吗？

seq(as.Date("2014/09/04"), by = "day", length.out = 5) # [1] "2014-09-04" "2014-09-05" "2014-09-06" "2014-09-07" "2014-09-08"

编辑：添加关于时区的内容

这适用于我目前的时区

seq(c(ISOdate(2014,4,9)), by = "DSTday", length.out = 5) #[1] "2014-04-09 08:00:00 EDT" "2014-04-10 08:00:00 EDT" "2014-04-11 08:00:00 EDT" "2014-04-12 08:00:00 EDT" #[5] "2014-04-13 08:00:00 EDT"

EDIT2：

OlsonNames() # I used this to find out what to write for the JST tz - it's "Japan" x <- as.POSIXct("2014-09-04 23:59:59", tz="Japan") format(seq(x, by="day", length.out=5), "%Y-%m-%d %Z") # [1] "2014-09-04 JST" "2014-09-05 JST" "2014-09-06 JST" "2014-09-07 JST" "2014-09-08 JST"

Does this help?

seq(as.Date("2014/09/04"), by = "day", length.out = 5) # [1] "2014-09-04" "2014-09-05" "2014-09-06" "2014-09-07" "2014-09-08"

edit: adding in something about timezones

this works for my current timezone

seq(c(ISOdate(2014,4,9)), by = "DSTday", length.out = 5) #[1] "2014-04-09 08:00:00 EDT" "2014-04-10 08:00:00 EDT" "2014-04-11 08:00:00 EDT" "2014-04-12 08:00:00 EDT" #[5] "2014-04-13 08:00:00 EDT"

edit2:

OlsonNames() # I used this to find out what to write for the JST tz - it's "Japan" x <- as.POSIXct("2014-09-04 23:59:59", tz="Japan") format(seq(x, by="day", length.out=5), "%Y-%m-%d %Z") # [1] "2014-09-04 JST" "2014-09-05 JST" "2014-09-06 JST" "2014-09-07 JST" "2014-09-08 JST"