Group into Quantities of Calls per Minute

Asked Apr 07 '15 at 21:06

Active Apr 07 '15 at 21:14

Viewed 43 times

I have a vector in R with sorted times (00:00 up until 23:59). Each one represents one phone call made in that minute. It has 1440 levels (24*60).

times <- c(00:00, 00:00, 00:00, 00:01, 00:01, 23:58, 23:58, 23:59)

This simplified example should yield:

quantity <- (3,2,2,1)

I want to create a vector that tells me the quantity of phone calls made at each minute. This would be a vector of length 1440 that would contain the quantity of calls made at 00:00, the quantity of calls made at 00:01, ...., the quantity of calls made at 23:29.

I'm hoping that I could somehow incorporate the fact that my vector understands it has 1440 levels to create this new vector.

Thanks!

edited Apr 07 '15 at 21:14

asked Apr 07 '15 at 21:06

Katya Willard

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Please supply [a reproducible example](http://stackoverflow.com/questions/5963269/how-to-make-a-great-r-reproducible-example) of your data and the code you've already tried. – Thomas Apr 07 '15 at 21:09
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sounds like a job of `table` – ExperimenteR Apr 07 '15 at 21:11
Use `table` with `useNA='always'` – IRTFM Apr 07 '15 at 21:18
Thank you! 'table' works @ExperimenteR – Katya Willard Apr 07 '15 at 21:19

Group into Quantities of Calls per Minute

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