With a dat.frame "mydata" create a new variable mydata$num mydata$num <- 1:nrow(mydata)
new_data <- subset(mydata, num == 10) plot using new_data On Fri, 12 Feb 2021 at 10:35, Informatique < informati...@billard-francois-marie.eu> wrote: > Hello, > > i'm using Rstudio from a few day, and i have some information in a CVS > file, take every five second, format of the time is HH:MM:SS. > I use the hour on the X axis, but i don't want having all the time print. > For example only every 10 values. > > I think it will be possible with scale_x_datetime(breaks = > date_breaks(XXX) > > but i don't understand how select every 20 s. > > Thank's for your help > > François-marie BILLARD > -- > Informatique <informati...@billard-francois-marie.eu> > > ______________________________________________ > R-help@r-project.org mailing list -- To UNSUBSCRIBE and more, see > 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. > -- John Kane Kingston ON Canada [[alternative HTML version deleted]] ______________________________________________ R-help@r-project.org mailing list -- To UNSUBSCRIBE and more, see 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.
