I have a problem with comparing dates. i tried it like "datesub subset(data, 2012-11-19 < data$date)", but this doesn't work and i don't know why. Hope you can help me. here are my files: http://uploaded.net/file/n9sxdm0v <http://uploaded.net/file/n9sxdm0v> -- View this message in context: http://r.789695.n4.nabble.com/Date-Comparing-Problem-tp4676739.html Sent from the R help mailing list archive at Nabble.com.
Hi,
Try:
set.seed(634)
dat<-
data.frame(date=seq(as.Date("2012-11-15"),length.out=10,by="1
day"), value=rnorm(10))
subset(dat,"2012-11-19" < date)?
#???????? date????? value
#6? 2012-11-20 -0.3290021
#7? 2012-11-21? 0.3106802
#8? 2012-11-22 -1.0782814
#9? 2012-11-23 -0.1333426
#10 2012-11-24? 0.8441754
A.K.
I have a problem with comparing dates. i tried it like "datesub =
subset(data, 2012-11-19 < data$date)", but this doesn't work and i
don't know why.
Hope you can help me.
here are my files:
http://uploaded.net/file/n9sxdm0v
On 23.09.2013 13:48, Rhymes wrote:> I have a problem with comparing dates. i tried it like "datesub > subset(data, 2012-11-19 < data$date)", but this doesn't work and i don't > know why.Errr, in R: 2012-11-19 == 1982 You probably want to convert it to a Date object or Posix.. object, but since we do not know ehat data$date is..... Best, Uwe Ligges> > Hope you can help me. > > here are my files: > http://uploaded.net/file/n9sxdm0v <http://uploaded.net/file/n9sxdm0v> > > > > -- > View this message in context: http://r.789695.n4.nabble.com/Date-Comparing-Problem-tp4676739.html > Sent from the R help mailing list archive at Nabble.com. > > ______________________________________________ > R-help at 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. >