[R] Formatting the output of pairs()

[ripley@stats.ox.ac.uk]

On Fri, 22 Mar 2002, Hadley Wickham wrote:

> Would anyone be able to give me some ideas on how to go about changing
> the output of pairs()?

> What I want to do is :
>  * plot each value as a point (instead of those hollow circles)

set argument panel. Don't known what you mean by a `point' (that would be
invisible, but perhaps pch=20 or pch="."?

>  * remove the gap between each scatter plot

set argument gap.

>  * make the frame around each scatter plot pale grey

In ... set bty="n", and in your panel function include box(col="grey80").

E.g.

data(iris[, 1:4])
pairs(iris[, 1:4]), gap=0,
      panel=function(x,y, ...) {box(col="grey80"); points(x, y, pch=20)},
      bty="n", diag.panel= function(x,y, ...) box(col="grey80"))

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