I have the following data frame
> head(try)
creates time
1 128.29508 1417392072
3 236.98361 1417392072
7 98.45902 1417392072
9 157.44068 1417392131
10 227.38333 1417392131
11 242.03390 1417392131
> str(try)
'data.frame': 102968 obs. of 2 variables:
$ creates: num 128.3 237 98.5 157.4 227.4 ...
$ time : Factor w/ 26418 levels "1417392071","1417392072",..: 2 2 2 3 3 3 3 3 5 5 ...
I am unable to convert the UNIX timestamp into datetime using the following methods I tried
> head(as.POSIXlt(as.numeric(try$time),origin="1970-01-01",tz="GMT"))
[1] "1970-01-01 00:00:02 UTC" "1970-01-01 00:00:02 UTC" "1970-01-01 00:00:02 UTC" "1970-01-01 00:00:03 UTC" "1970-01-01 00:00:03 UTC"
[6] "1970-01-01 00:00:03 UTC"
> head(as.POSIXct(as.character(try$time),tz="GMT"))
Error in as.POSIXlt.character(x, tz, ...) : character string is not in a standard unambiguous format
> head(as.POSIXlt(as.POSIXct(as.vector(as.numeric(try$time)),origin="1970-01-01")))
[1] "1970-01-01 00:00:02 UTC" "1970-01-01 00:00:02 UTC" "1970-01-01 00:00:02 UTC" "1970-01-01 00:00:03 UTC" "1970-01-01 00:00:03 UTC"
[6] "1970-01-01 00:00:03 UTC"
I'm not sure what I'm doing incorrectly here.
You have to convert from Factor to Character To Number before using as.POSIXct. The function is expecting an integer as a Unixtime
head(as.POSIXct(as.numeric(as.character(try$time)), origin="1970-01-01", tz="GMT"))
这是因为 epoch 不是数字,尝试将其转换为数字,它就像奇迹一样工作!
try$time <- as.POSIXct(as.numeric(try$time), origin = '1970-01-01', tz = 'GMT')
Try
head(as.POSIXct(as.integer(as.numeric(as.character(try$time)) / 1000.0),
origin='1970-01-01', tz="GMT"))
What about
library("anytime")
anytime(try$time)
you can also get the date from the timestamps anydate(try$time)
and if you want UTC, you can do anytime(try$time, asUTC = TRUE)
The technical post webpages of this site follow the CC BY-SA 4.0 protocol. If you need to reprint, please indicate the site URL or the original address.Any question please contact:yoyou2525@163.com.