无法使用R转换历史时间

Question

我正试图改变时代感。我有一个具有划时代时间的数字数组。

我试过这个-

print(as.POSIXct(x), origin = "1970-01-01", tz = "CST6CDT"))

其中x表示具有划时代时间的数字数组。

#Output:
" CDT" " CST" " CDT" " CDT" " CDT" " CST" " CDT" " CST"

我试过这些-

print(as.POSIXct(1403878908842, origin = "1970-01-01", tz = "CST6CDT"))
print(as.POSIXct(1403878908842, origin = "1970-01-01", tz = ""))

但它们都返回时区，而不是转换日期。

Answer 1

试试这个：

as.POSIXct(1403878908842/1000, origin = "1970-01-01", tz = "")
## [1] "2014-06-27 10:21:48 EDT"

as.POSIXct(1403878908842/1000, origin = "1970-01-01", tz = "CST6CDT")
## [1] "2014-06-27 09:21:48 CDT"