Try this: matplot(xxx[,1], xxx[2:4], type = "l") with(xxx, { segments(x, z1, x, z2) points(x, z1) points(x, z2) })
Omit the two points commands if you don't want circles at the ends of the segments. On Dec 6, 2007 6:30 PM, David Rees <[EMAIL PROTECTED]> wrote: > Hi, > > I am having trouble plotting the graph I need given the follow kind of data > > > xxx <- data.frame( > "x"=c(1,2,3,4,5), > "y1"=c(2,4,3,5,6), > "y2"=c(3,4,6,3,1), > "y3"=c(1,3,5,7,3), > "z1"=c(1,NA,3,5,NA), > "z2"=c(2,NA,4,6,NA) ) > > xxx > x y1 y2 y3 z1 z2 > 1 1 2 3 1 1 2 > 2 2 4 4 3 NA NA > 3 3 3 6 5 3 4 > 4 4 5 3 7 5 6 > 5 5 6 1 3 NA NA > > What I need is the following > > - One graph > - y1, y2, y3 plotted as seperate lines vs x > - z1, z2 give the range of the value of z, and need to be plotted as error > bars or confidence intervals vs x > > Many thanks for any help, > Regards, > David > > > --------------------------------- > > [[alternative HTML version deleted]] > > ______________________________________________ > R-help@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. > ______________________________________________ R-help@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.