[R] Data formatting for matplot

[Tim Clark]

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 <wwwhsd at gmail.com> wrote:

> From: Henrique Dallazuanna <wwwhsd at gmail.com>
> Subject: Re: [R] Data formatting for matplot
> To: "Tim Clark" <mudiver1200 at yahoo.com>
> Cc: r-help at 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 <mudiver1200 at 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
> >
> > ______________________________________________
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> reproducible code.
> >
> 
> 
> 
> -- 
> Henrique Dallazuanna
> Curitiba-Paraná-Brasil
> 25° 25' 40" S 49° 16' 22" O
>