[R] some pairs() questions

[Berton Gunter]

If you want variable names, why do you have labels = NULL in your call?? 

Your highlighting criterion is not clear. If you want to choose one variable
and highlight points in all plots for which the value of that variable meets
your criterion, then determine the indices (outside of pairs) for which this
is true and write a panel function via points() to highlight. If you want to
highlight points in individual plots according to the variables in the
panel, then write a panel function via points()to do this. e.g.
points(x,y,..., col=ifelse(x<2,'red','blue'))

-- Bert Gunter
Genentech Non-Clinical Statistics
South San Francisco, CA
 
"The business of the statistician is to catalyze the scientific learning
process."  - George E. P. Box
 
 

> -----Original Message-----
> From: r-help-bounces at stat.math.ethz.ch 
> [mailto:r-help-bounces at stat.math.ethz.ch] On Behalf Of Pieter Provoost
> Sent: Thursday, May 05, 2005 11:07 AM
> To: r-help at stat.math.ethz.ch
> Subject: Re: [R] some pairs() questions
> 
> I'm sure it's possible to display the variable names by making a small
> change to the code. Someone did this last week but I can't 
> contact this
> person now to ask how. I tried this
> 
> vars <- names(Rdata)
> pairs(Rdata, labels=vars,...)
> 
> but that doesn't work (formal argument "labels" matched by 
> multiple actual
> arguments). Unfortunately I don't have the time right now to 
> get to know new
> packages and write new scripts...
> 
> Thanks
> Pieter
> 
> ----- Original Message -----
> From: "Berton Gunter" <gunter.berton at gene.com>
> To: "'Pieter Provoost'" <pieterprovoost at gmail.com>;
> <r-help at stat.math.ethz.ch>
> Sent: Thursday, May 05, 2005 6:40 PM
> Subject: RE: [R] some pairs() questions
> 
> 
> > (Lazy answer, not checking your code in detail)
> >
> > Try using splom() in the lattice package, as it gives more extensive
> control
> > to do the sorts of things you seem to want.
> >
> > -- Bert Gunter
> > Genentech Non-Clinical Statistics
> > South San Francisco, CA
> >
> > "The business of the statistician is to catalyze the 
> scientific learning
> > process."  - George E. P. Box
> >
> >
> >
> > > -----Original Message-----
> > > From: r-help-bounces at stat.math.ethz.ch
> > > [mailto:r-help-bounces at stat.math.ethz.ch] On Behalf Of 
> Pieter Provoost
> > > Sent: Thursday, May 05, 2005 8:43 AM
> > > To: r-help at stat.math.ethz.ch
> > > Subject: [R] some pairs() questions
> > >
> > > I have a few problems with pairs(). I want to add the
> > > variables names to the
> > > plot, but I don't know how. I tried different things with 
> the labels
> > > argument but nothing worked out. This is the code:
> > >
> > > read.table("bay1.bay",header=T)->Rdata
> > > (histogram part skipped)
> > > pairs(Rdata,
> > > pch='.',diag.panel=panel.hist,labels=NULL,gap=0,xaxt="n",yaxt=
> > "n",upper.pane
> > > l=NULL)
> > >
> > > The other problem is that I want to "highlight" one or more
> > > of the records
> > > of Rdata (give it another symbol and another color). What's
> > > the easiest way
> > > to do this? The record to be highlighted should be selected
> > > based on the
> > > value of one of the variables (smaller than 2.8 is this case).
> > >
> > > Many thanks in advance,
> > > Pieter Provoost
> > >
> 
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