Re: [R] How to manipulate the time data without the date?

From: John Kane <jrkrideau_at_yahoo.ca>
Date: Thu, 06 Nov 2008 10:06:30 -0800 (PST)


Does this help?

library(chron)
tms<-c("19:30:23","18:39:10")
mytimes <- times(tms)
mytimes[1]-mytimes[2]

> From: tedzzx <zengzhenxing_at_gmail.com>
> Subject: [R] How to manipulate the time data without the date?
> To: r-help@r-project.org
> Received: Thursday, November 6, 2008, 12:10 PM
> 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.
>
> How can we manipulate the time data without the date?
>
> Thanks advance
>
> Ted
> --



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