[R] Trend lines on a scatterplot matrix

Mark Difford mark_difford at yahoo.co.uk
Fri Jul 20 10:57:40 CEST 2007

Hi Alan, 

There is a good, ready made, way of doing this, with additional options, in
Professor Fox's car package.  See:---



Alan S Barnett-2 wrote:
> I'm using pairs() to generate a scatterplot matrix;
> pairs(~
> Fuzzy.gray.white.ratio+Fuzzy.gw.t.score+AgeWhenTested+signal_mean.noise,
> 	data=datam,subset=status=="control",main="Controls",
>         labels=c("G/W","Peak Separation","Age","S/N"))
> How can I add regression lines to the plots?
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> PLEASE do read the posting guide
> http://www.R-project.org/posting-guide.html
> and provide commented, minimal, self-contained, reproducible code.

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