Why not give it an arbitrary date such 2008-01-01?
On Thu, 6 Nov 2008, tedzzx wrote:
Hi,all
I only got the time data such as:
tms<-c("19:30:23","18:39:10".....)
I want to manipulate this time series data. For example, plus one second(or
minute) or minus one second
This data only has the time(h:m:s), without the date. I know that there are
chron package, ISOPix class and the timeDate class, but all these class need
the input of date.
And in base R there is POSIXct.
How can we manipulate the time data without the date?
Not really, as DST changes mean which day does matter. But all other days
will be the same.
--
Brian D. Ripley, [EMAIL PROTECTED]
Professor of Applied Statistics, http://www.stats.ox.ac.uk/~ripley/
University of Oxford, Tel: +44 1865 272861 (self)
1 South Parks Road, +44 1865 272866 (PA)
Oxford OX1 3TG, UK Fax: +44 1865 272595
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