为什么strptime总是返回NA?
问题描述:
retest = c("May 31 2014 07:31:46", "May 31 2014 07:32:24", "May 31 2014 07:32:24",
"May 31 2014 07:32:26", "May 31 2014 07:32:33", "May 31 2014 07:32:38",
"May 31 2014 07:32:44", "May 31 2014 07:32:49", "May 31 2014 07:32:52",
"May 31 2014 07:32:53")
a <- strptime(retest, format="%B %d %Y %H:%M:%S")
a
# [1] NA NA NA NA NA NA NA NA NA NA
我错过了什么?为什么strptime总是返回NA?
答
您需要更改地区:
# backup original locale
bkp <- Sys.getlocale('LC_TIME')
# change locale
Sys.setlocale('LC_TIME','C')
retest = c("May 31 2014 07:31:46", "May 31 2014 07:32:24", "May 31 2014 07:32:24",
"May 31 2014 07:32:26", "May 31 2014 07:32:33", "May 31 2014 07:32:38",
"May 31 2014 07:32:44", "May 31 2014 07:32:49", "May 31 2014 07:32:52",
"May 31 2014 07:32:53")
a <- strptime(retest, format="%B %d %Y %H:%M:%S")
# restore original locale (if you want...)
Sys.setlocale('LC_TIME',bkp)
对我的作品 - 这是在你的区域? – A5C1D2H2I1M1N2O1R2T1 2014-10-02 15:50:01
相同。代码也在我的机器上运行。 – jazzurro 2014-10-02 15:50:40
尝试'Sys.setlocale(category =“LC_TIME”,“C”)'也许然后再次运行你的代码 – 2014-10-02 15:56:08