[R] help on panel.superpose

Duncan Mackay mackay at northnet.com.au
Sat Jul 23 11:02:28 CEST 2011

I too am unsure what is required, perhaps

xyplot(y~x,data,col=c(3,4),groups=id,pch=c(12,13), type= c("p","r"))

a toy dataset would have helped

Perhaps a perusal of
is required


Duncan Mackay
Department of Agronomy and Soil Science
University of New England
Email: home mackay at northnet.com.au

At 11:30 23/07/2011, you wrote:
>For the first part, use the col and pch arguments:
>For the second part, I do not know what exactly mean by superimpose the mean
>level? Should the mean for each group be displayed as a horizontal line?
>Bharath Kumar wrote:
> >
> > Dear users,
> >
> > I am new to R and have couple of problems with xyplot.
> >
> > A) I am trying to use the xyplot to plot mean concentration vs time across
> > 5 dose groups.
> >
> > When i use the following script
> > xyplot(mean~time,groups=dose,type="b",panel=panel.superpose). R generates
> > the plot, but i have no control over pch or color for the line. It
> > displays whatever color and pch it wants to generate. How do i fix this.
> >
> > B) I am trying to use the same function to plot individual data across
> > dose groups
> >
> > xyplot(conc~time|dose,groups=subject,type="l") works. But it would be
> > great if anyone can shed light on how to superimpose the mean profile for
> > each dose group within that panel
> >
> > Any help will be appreciated
> > Thanks
> > Kumar
> >
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