Henrique, Thanks for the suggestion. I think I may not understand matplot() because the graph did not come out like it should have. Gabor suggested:
library(lattice) xyplot(y ~ x, mydat, groups = id) Which gave what I was looking for. Is there a way to get matplot() to give the same graph? I don't have to use matplot(), but would like to understand its use. Thanks, Tim Tim Clark Department of Zoology University of Hawaii --- On Sun, 9/27/09, Henrique Dallazuanna <www...@gmail.com> wrote: > From: Henrique Dallazuanna <www...@gmail.com> > Subject: Re: [R] Data formatting for matplot > To: "Tim Clark" <mudiver1...@yahoo.com> > Cc: r-help@r-project.org > Date: Sunday, September 27, 2009, 4:47 PM > You can try this: > > matplot(do.call(cbind, split.dat)) > > On Sun, Sep 27, 2009 at 11:42 PM, Tim Clark <mudiver1...@yahoo.com> > wrote: > > Dear List, > > > > I am wanting to produce a multiple line plot, and know > I can do it with matplot but can't get my data in the format > I need. I have a dataframe with three columns; individuals > ID, x, and y. I have tried split() but it gives me a list > of matrices, which is closer but not quite what I need. > For example: > > > > id<-rep(seq(1,5,1),length.out=100) > > x<-rnorm(100,5,1) > > y<-rnorm(100,20,5) > > > > mydat<-data.frame(id,x,y) > > split.dat<-split(mydat[,2:3],mydat[,1]) > > > > I would appreciate your help in either how to get this > into a format acceptable to matplot or other options for > creating a multiple line plot. > > > > Thanks, > > > > Tim > > > > > > > > Tim Clark > > Department of Zoology > > University of Hawaii > > > > ______________________________________________ > > 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. > > > > > > -- > Henrique Dallazuanna > Curitiba-Paraná-Brasil > 25° 25' 40" S 49° 16' 22" O > ______________________________________________ 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.