R help - Jun 2007 - Retrieve part of (top right corner) of a "plot.data.frame" plot?

Hi,

I believe this question has been asked before, but I cant find and don't
remember the answer.

The problem is simple, calling 'plot.data.frame(x)' gives a nice
'matrix of
scatterplots' for each pair of columns in x. for example;

x <-
  data.frame(a=jitter(01:20),
             b=jitter(20:01),
             c=jitter(21:40),
             d=jitter(rep(01,20)),
             e=jitter(rep(10,20)),
             f=jitter(rep(20,20))
             )

plot(x)

gives a 6 by 6 grid of scatter plots, two (upper right and lower left) for
each pair of columns in x. (I am going over these basics so that you can
understand what I mean next).

I would like to see just part of the above result, namely the nine plots in
the top right of the given plot, or;

a vs. d | a vs. e | a vs. f
b vs. d | b vs. e | b vs. f
c vs. d | c vs. e | c vs. f

I tried a number of ways to do this, but I can't find either the right
formula or the right function to get what I want.

Any suggestions you can give (especially any not involving the source code
of 'pairs') are most welcome.

Dan.

	[[alternative HTML version deleted]]

Hi,

That is maybe not the most elegant way but you can hide some plots 
regions by add a white polygon, eg:

polygon(x=c(1,1,0,...),y=c(0,1,0,...),col=0,xpd=xpd)

Just a personnal question, can you modify the content of the "title" 
boxes without changing the names of the variables, e.g. "myParameter" 
instead of "a"?

Dan Bolser a ?crit :
> Hi,
>
> I believe this question has been asked before, but I cant find and
don't
> remember the answer.
>
> The problem is simple, calling 'plot.data.frame(x)' gives a nice
'matrix of
> scatterplots' for each pair of columns in x. for example;
>
> x <-
>   data.frame(a=jitter(01:20),
>              b=jitter(20:01),
>              c=jitter(21:40),
>              d=jitter(rep(01,20)),
>              e=jitter(rep(10,20)),
>              f=jitter(rep(20,20))
>              )
>
> plot(x)
>
> gives a 6 by 6 grid of scatter plots, two (upper right and lower left) for
> each pair of columns in x. (I am going over these basics so that you can
> understand what I mean next).
>
> I would like to see just part of the above result, namely the nine plots in
> the top right of the given plot, or;
>
> a vs. d | a vs. e | a vs. f
> b vs. d | b vs. e | b vs. f
> c vs. d | c vs. e | c vs. f
>
> I tried a number of ways to do this, but I can't find either the right
> formula or the right function to get what I want.
>
> Any suggestions you can give (especially any not involving the source code
> of 'pairs') are most welcome.
>
> Dan.
>
> 	[[alternative HTML version deleted]]
>
> ______________________________________________
> R-help at stat.math.ethz.ch 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.
>
>
>

On 6/20/07, Dan Bolser <dan.bolser.r at googlemail.com>
wrote:
> Hi,
>
> I believe this question has been asked before, but I cant find and
don't
> remember the answer.
>
> The problem is simple, calling 'plot.data.frame(x)' gives a nice
'matrix of
> scatterplots' for each pair of columns in x. for example;
>
> x <-
>   data.frame(a=jitter(01:20),
>              b=jitter(20:01),
>              c=jitter(21:40),
>              d=jitter(rep(01,20)),
>              e=jitter(rep(10,20)),
>              f=jitter(rep(20,20))
>              )
>
> plot(x)
>
> gives a 6 by 6 grid of scatter plots, two (upper right and lower left) for
> each pair of columns in x. (I am going over these basics so that you can
> understand what I mean next).
>
> I would like to see just part of the above result, namely the nine plots in
> the top right of the given plot, or;
>
> a vs. d | a vs. e | a vs. f
> b vs. d | b vs. e | b vs. f
> c vs. d | c vs. e | c vs. f
>
> I tried a number of ways to do this, but I can't find either the right
> formula or the right function to get what I want.
>
> Any suggestions you can give (especially any not involving the source code
> of 'pairs') are most welcome.
Lattice gets you close:

xyplot(a + b + c ~ d + e + f, data = x, outer = TRUE,
       scales = "free", layout = c(3, 3), aspect = 1)

The rest may or may not be simple, depending on what you want exactly.

-Deepayan