我怎样才能把几天分成几周?(How can I group days into weeks?)
在R中,我如何在日期(天)和星期的矢量之间进行关联?
编辑:“星期”应该是日期范围内的星期指数,而不是年内。 我对这种含糊不清的道歉。
In R, how can I associate between a vector of dates (days) and weeks?
Edit: "weeks" should be the week index within the date range and not within the year. My apologies for the ambiguity.
最满意答案
你只想要自第一张唱片以来的7天完成时间间隔?
dvec <- as.Date("2001-04-01")+0:90 dweek <- as.numeric(dvec-dvec[1]) %/% 7 dweek[1:21] # [1] 0 0 0 0 0 0 0 1 1 1 1 1 1 1 2 2 2 2 2 2 2Do you just want the number of completed 7 day intervals since the first record?
dvec <- as.Date("2001-04-01")+0:90 dweek <- as.numeric(dvec-dvec[1]) %/% 7 dweek[1:21] # [1] 0 0 0 0 0 0 0 1 1 1 1 1 1 1 2 2 2 2 2 2 2更多推荐
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