I know this is a late response, but what about
startt - as.POSIXct( paste(data2$V4, data2$V5) )
endt - startt + data2$V6
-Don
--
Don MacQueen
Lawrence Livermore National Laboratory
7000 East Ave., L-627
Livermore, CA 94550
925-423-1062
On 4/12/13 12:09 AM, Cat Cowie
Hello, Cat,
see inline below.
Hth -- Gerrit
On Fri, 12 Apr 2013, Cat Cowie wrote:
Hi R forum,
Each row of my data (below) show a new contact event between animals.
In order to ultimately look at the patterns of intervals between
contacts, I need to calculate a contact end time. The
Hi Gerrit,
Thanks for your quick reply - this, in combination with reversing the
date as it is shown in my data, worked perfectly.
startt- strptime((paste(data2$V4, data2$V5)), %Y-%m-%d %H:%M:%S)
Apologies for the silly question it seems, but you've saved me a lot
of time. Always learning
avoid using F, spell it out
Use an appropriate TZ... e.g. use Sys.setenv( TZ=Etc/GMT+5 ) before
converting if your time is local standard time year round
Use difftime to add to time values for consistent results
endt - startt + as.difftime( data2$V6, units=secs )
Use the str function to
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