如何生成精度到秒、分钟级的等差时间序列

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收藏 2017-12-20

目前，我只找到如何生成以天为精度的等差时间序列生成方法：

> seq(from=as.Date('2010-1-1'), to=as.Date('2010-1-30'), by=2)
[1] "2010-01-01" "2010-01-03" "2010-01-05" "2010-01-07" "2010-01-09"
[6] "2010-01-11" "2010-01-13" "2010-01-15" "2010-01-17" "2010-01-19"
[11] "2010-01-21" "2010-01-23" "2010-01-25" "2010-01-27" "2010-01-29"

但是如果我要以精度为小时、分钟、秒，或者任意秒为精度生成时间序列，该怎么做呢？

> seq(from=as.Date('2010-1-1 00:00:00', format='%Y-%m-%d %H:%M:%S'), to=as.Date('2010-1-30 00:00:00', format='%Y-%m-%d %H:%M:%S'), by=1)
[1] "2010-01-01" "2010-01-02" "2010-01-03" "2010-01-04" "2010-01-05"
[6] "2010-01-06" "2010-01-07" "2010-01-08" "2010-01-09" "2010-01-10"
[11] "2010-01-11" "2010-01-12" "2010-01-13" "2010-01-14" "2010-01-15"
[16] "2010-01-16" "2010-01-17" "2010-01-18" "2010-01-19" "2010-01-20"
[21] "2010-01-21" "2010-01-22" "2010-01-23" "2010-01-24" "2010-01-25"
[26] "2010-01-26" "2010-01-27" "2010-01-28" "2010-01-29" "2010-01-30"

尝试了上面这个，好像seq只认天为单位。

请教各位，谢谢啦

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全部回复

cyberhorse111

2017-12-20 11:12:17

换了一种方式，
> seq(from=Sys.time(), to=Sys.time()+100, by=5)
[1] "2017-12-20 11:11:16 CST" "2017-12-20 11:11:21 CST"
[3] "2017-12-20 11:11:26 CST" "2017-12-20 11:11:31 CST"
[5] "2017-12-20 11:11:36 CST" "2017-12-20 11:11:41 CST"
[7] "2017-12-20 11:11:46 CST" "2017-12-20 11:11:51 CST"
[9] "2017-12-20 11:11:56 CST" "2017-12-20 11:12:01 CST"
[11] "2017-12-20 11:12:06 CST" "2017-12-20 11:12:11 CST"
[13] "2017-12-20 11:12:16 CST" "2017-12-20 11:12:21 CST"
[15] "2017-12-20 11:12:26 CST" "2017-12-20 11:12:31 CST"
[17] "2017-12-20 11:12:36 CST" "2017-12-20 11:12:41 CST"
[19] "2017-12-20 11:12:46 CST" "2017-12-20 11:12:51 CST"
[21] "2017-12-20 11:12:56 CST"

这样可以自动以秒为精度实现等差序列

大家还有其他办法吗