calculating seconds

Dear R People:

I'm looking at some data which has the time in seconds since 1992/10/8,
15:15:42.5

Just ask R to

strptime("1992/10/8,15:15:42.5", "%Y/%m/%d,%H:%M:%OS") + NumberOfSeconds

and you get the actual date after the given amount of NumberOfSeconds. 
Including correct timezone / daylight saving stuff / leap seconds etc.

Best,
Uwe Ligges

Are there any functions currently available to "translate" this or should I
just do my own?

I figured that I'd check first.

Thanks,
Erin

Your subject line says you want to calculate seconds... the body of your message says you want to "translate" seconds (to something unspecified).

I am not sure how we are supposed to respond. Can you give us a short example of what you have and what you want using R syntax?
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Sent from my phone. Please excuse my brevity.

Dear R People:

I'm looking at some data which has the time in seconds since 1992/10/8,
15:15:42.5

Are there any functions currently available to "translate" this or
should I
just do my own?

I figured that I'd check first.

Thanks,
Erin

I'm looking at some data which has the time in seconds since 
1992/10/8,
15:15:42.5

Are there any functions currently available to "translate" 
this or should I just do my own?

strptime() goes from date formats to seconds.

For going the other way, see ?DateTimeClasses  for a lot of information on dates and times, and (probably) ?as.POSIXct for changing something in seconds (as the Examples say, 'a large integer') into a date-time class which you should be able to convert to other things more easily.

S Ellison

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