[R] plotting gridlines

[Bert Gunter]

Or you can use lattice's xyplot(..., type = c("p","g"))

?panel.xyplot  provides details

-- Bert Gunter
Genentech

-----Original Message-----
From: r-help-bounces at r-project.org [mailto:r-help-bounces at r-project.org] On
Behalf Of John Kane
Sent: Friday, January 25, 2008 9:49 AM
To: John Lande; r-help at r-project.org
Subject: Re: [R] plotting gridlines

?grid  
--- John Lande <john.lande77 at gmail.com> wrote:

> dear all,
> 
> I have a very simple question but I could not figure
> out.
> 
> I need to make plots with grid in the background.
> 
> something like I old retrive like this
> 
> a=runif(100)*10
> b=runif(100)*10
> plot(a,b, pch=20, xlim=c(0, round(max(a))),
> ylim=c(0, round(max(b))))
> vs=seq(0, max(a), 0.5)
> for(i in 1:length(vs)){
>    abline(v=vs[i], col="lightgrey")
> }
> hs=seq(0, max(b), 0.5)
> for(i in 1:length(hs)){
>    abline(h=hs[i], col="lightgrey")
> }
> points(a, b, pch=20)
> 
> as you can see it is not very convenient
> 
> --
> john
> 
> 	[[alternative HTML version deleted]]
> 
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