Re: [R] diff of two timestamps

2009-09-02 Thread William Dunlap
> -Original Message- > From: r-help-boun...@r-project.org > [mailto:r-help-boun...@r-project.org] On Behalf Of sugo > Sent: Wednesday, September 02, 2009 4:51 PM > To: r-help@r-project.org > Subject: [R] diff of two timestamps > > > Hi all, > > I hav

Re: [R] diff of two timestamps

2009-09-02 Thread Henrique Dallazuanna
Try this: dat <- read.table(textConnection("Timestamp1 Timestamp2 05:24:43 05:25:05 15:47:02 15:47:22 18:36:05 18:36:24 15:21:24 15:22:04"), T) closeAllConnections() Reduce("-", lapply(dat, strptime, format = "%H:%M:%S")) On Wed, Sep 2, 2009 at 8:50 PM, sugo wrote: > > Hi all, > > I have the f

Re: [R] diff of two timestamps

2009-09-02 Thread Duncan Mackay
Try require(chron) dat <- read.table(textConnection("Timestamp1 Timestamp2 05:24:43 05:25:05 15:47:02 15:47:22 18:36:05 18:36:24 15:21:24 15:22:04"), T) closeAllConnections() str(dat) dat[,1] <- times(dat[,1]) dat[,2] <- times(dat[,2]) # numeric as.numeric(dat[,2] <- times(dat[,2]) ) # test t

Re: [R] diff of two timestamps

2009-09-02 Thread Gabor Grothendieck
Try this: > Lines <- "Timestamp1;Timestamp2; + 05:24:43;05:25:05; + 15:47:02;15:47:22; + 18:36:05;18:36:24; + 15:21:24;15:22:04;" > > library(chron) > DF <- read.csv(textConnection(Lines), sep = ";", as.is = TRUE) > times(DF$Timestamp2) - times(DF$Timestamp1) [1] 00:00:22 00:00:20 00:00:19 00:00:4

[R] diff of two timestamps

2009-09-02 Thread sugo
Hi all, I have the following problem: I have a csv-file consisting of timestamp values (no dates), e.g.: Timestamp1;Timestamp2; 05:24:43;05:25:05; 15:47:02;15:47:22; 18:36:05;18:36:24; 15:21:24;15:22:04; I need a vector with the difference of the two timestamps, so I read the data with the read.