Sorry - I thought about plot(density())
should read more carefull...
On 01/02/2008, Gavin Simpson <[EMAIL PROTECTED]> wrote:
>
> On Fri, 2008-02-01 at 14:00 +0200, Rainer M Krug wrote:
> > On 01/02/2008, Ng Stanley <[EMAIL PROTECTED]> wrote:
> > >
> > > Hi,
> > >
> > > I used the following statements to generate unsuccessfully a 5 by 5
> > > multiple
> > > densityplots on a single page. If I use plot, the whole thing works.
> > >
> > > > data <- matrix(rnorm(25), 5, 5)
> > > > op <- par(mfrow = c(5, 5))
> > > > for (x in 1:5) {par(new=TRUE);densityplot(data[,x],
> xlim=c(.......))}
> >
> >
> > See changes in line above. par(new=TRUE) to overplot and xlim() to have
> > same x limits. The y-limits can be set the same way if necessary.
> > untested!
> > Rainer
>
> That can't work as densityplot() is a lattice function and thus i) needs
> to be wrapped in print( densityplot() ) when in a for loop or similar,
> and ii) you can't mix base graphics layout with lattice.
>
> One way to do this is to stack the data one on another and add an ID
> variable. stack() does this for you, but there are others or you can
> cook it yourself.
>
> dat <- data.frame(matrix(rnorm(25), 5, 5))
> dat
> sdat <- stack(dat) ## generates variables 'values' and 'ind'
> densityplot(~ values | ind, data = sdat)
>
> HTH
>
> G
>
> >
> > > par(op)
> > >
> > > Thanks
> > > Stanley
> > >
> > > [[alternative HTML version deleted]]
> > >
> > > ______________________________________________
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> > >
> >
> >
> >
> > --
> >
> --
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> Dr. Gavin Simpson [t] +44 (0)20 7679 0522
> ECRC, UCL Geography, [f] +44 (0)20 7679 0565
> Pearson Building, [e] gavin.simpsonATNOSPAMucl.ac.uk
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>
>
--
--
Rainer M. Krug, Dipl. Phys. (Germany), MSc Conservation Biology (UCT)
Plant Conservation Unit Department of Botany
University of Cape Town
Rondebosch 7701
South Africa
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