[R] How to convert time to days

[bogdan romocea]

Those are obviously days, not seconds. A simple test would have
answered your question:
test <- strptime("20051026 15:26:19",format="%Y%m%d %H:%M:%S") -
    strptime("20051024 16:23:01",format="%Y%m%d %H:%M:%S")
class(test)
test
cat(test,"\n")

If you prefer you can use difftime for conversion:
difftime(strptime("20051026 15:26:19",format="%Y%m%d %H:%M:%S"),
    strptime("20051024 16:23:01",format="%Y%m%d %H:%M:%S"),units="hours")


> -----Original Message-----
> From: Muhammad Subianto [mailto:subianto at gmail.com]
> Sent: Wednesday, October 26, 2005 10:18 AM
> To: R-help at stat.math.ethz.ch
> Subject: [R] How to convert time to days
>
>
> Dear all,
> I have ran a simulation in R.
> This simulation was running about at least two days.
> Here is below the result some part of my code about time result.
> I don't understand about
>
> Start time: Mon Oct 24, 2005  at  04:23:01 PM
>  Finish time: Wed Oct 26, 2005  at  03:26:19 PM
>     Run time: 1.960625 secs.
>
> This is about two seconds or one day and nine hours?
> Then, how could I convert to 1 day, 23 hours, ? minutes, ? seconds.
> Thanks you very much for any suggestions.
>
> Best wishes, Muhammad Subianto
>
>  >
> ##############################################################
> ##################
>  > # Begin of program and timestamp:
>  >   cat(format(begin.time <- Sys.time(), "%a %b %d %X %Y") ,"\n")
> Mon Oct 24 04:23:01 PM 2005
>  >   cat("Start time:", secs <- format(begin.time, "%X"), "\n")
> Start time: 04:23:01 PM
>  >   cat("Sys.time:", begin.time <- Sys.time(), '\n')
> Sys.time: 1130163781
>  >
>  >
> --- CODE SIMULATION ---
>  >
>  > # End of program and timestamp:
>  >  cat("Sys.time:",end.time <- Sys.time(), '\n')
> Sys.time: 1130333179
>  >  cat("Run Time:",end.time-begin.time, 'secs.\n\n')
> Run Time: 1.960625 secs.
>
>  >  cat("Finish time:", secs <- format(end.time, "%X"), "\n")
> Finish time: 03:26:19 PM
>  >  cat(format(end.time <- Sys.time(), "%a %b %d %X %Y") ,"\n")
> Wed Oct 26 03:26:19 PM 2005
>  >
>  >  cat("\n",
> +      " Start time:", secs  <- format(begin.time, "%a %b %d, %Y  at
> %X"), "\n",
> +      "Finish time:", secs <- format(end.time,   "%a %b %d, %Y  at
> %X"), "\n",
> +      "   Run time:", end.time-begin.time, 'secs.\n\n')
>
>   Start time: Mon Oct 24, 2005  at  04:23:01 PM
>  Finish time: Wed Oct 26, 2005  at  03:26:19 PM
>     Run time: 1.960625 secs.
>
>  >
> ##############################################################
> #############
>
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