Thanks for the quick replies.  I have this working with a similar
suggestion to what arun suggests.  I am just interested in why the option
to use just h:m isn't supported.

#re: Jeff
chron(dates.="2009/05/01", times.="15:00:00", format=c(dates=c("y/m/d"),
times="h:m:s"))
chron(dates.="2009/05/01", times.="15:00", format=c(dates=c("y/m/d"),
times="h:m"))

same outcome.

Does updating to R 3.0.0 solve the problem?

Thanks for all of the help.

Stephen



On Wed, May 1, 2013 at 12:36 PM, arun <smartpink111@yahoo.com> wrote:

> HI,
>
> One possible way would be to use paste()
> chron(times.=paste0("15:00",":00"),format=c(times="h:m:s"))
> #[1] 15:00:00
>
>
> #or you could use
>
> library(lubridate)
> hm("15:00")
> #[1] "15H 0M 0S"
> A.K.
>
>
>
> ----- Original Message -----
> From: Stephen Sefick <sas0025@auburn.edu>
> To: "r-help@r-project.org" <r-help@r-project.org>
> Cc:
> Sent: Wednesday, May 1, 2013 12:28 PM
> Subject: [R] Chron format question h:m not working
>
> R 2.12.2 on Scientific Linux 6.4
>
> #works
> chron(times.="15:00:00", format=c(times="h:m:s"))
>
> #doesn't work
> chron(times.="15:00", format=c(times="h:m"))
>
> From chron Manual:
> The times format can be any permutation of "h", "m", and "s" separated by
> any one non-special character. The default is "h:m:s".
>
> what am I missing?
>
> many thanks,
>
>
> -- Stephen Sefick
> **************************************************
> Auburn University
> Biological Sciences
> 331 Funchess Hall
> Auburn, Alabama
> 36849
> **************************************************
> sas0025@auburn.edu
> http://www.auburn.edu/~sas0025
> **************************************************
>
> Let's not spend our time and resources thinking about things that are so
> little or so large that all they really do for us is puff us up and make us
> feel like gods.  We are mammals, and have not exhausted the annoying little
> problems of being mammals.
>
>                                 -K. Mullis
>
> "A big computer, a complex algorithm and a long time does not equal
> science."
>
>                               -Robert Gentleman
>
> ______________________________________________
> R-help@r-project.org mailing list
> https://stat.ethz.ch/mailman/listinfo/r-help
> PLEASE do read the posting guide
> http://www.R-project.org/posting-guide.html
> and provide commented, minimal, self-contained, reproducible code.
>
>
> ______________________________________________
> R-help@r-project.org mailing list
> https://stat.ethz.ch/mailman/listinfo/r-help
> PLEASE do read the posting guide
> http://www.R-project.org/posting-guide.html
> and provide commented, minimal, self-contained, reproducible code.
>



-- 
Stephen Sefick
____________________________________
| Auburn University                                   |
| Department of Biological Sciences           |
| 331 Funchess Hall                                  |
| Auburn, Alabama                                   |
| 36849                                                    |
|___________________________________|
| sas0025@auburn.edu                             |
| http://www.auburn.edu/~sas0025             |
|___________________________________|

Let's not spend our time and resources thinking about things that are so
little or so large that all they really do for us is puff us up and make us
feel like gods.  We are mammals, and have not exhausted the annoying little
problems of being mammals.

                                -K. Mullis

	[[alternative HTML version deleted]]

