[R] Add a rectangle behind a plot

[Prof Brian Ripley]

On Tue, 26 Feb 2008, Judith Flores wrote:

> Hi there,
>
>   I found one reference to add a reactangle behind a
> plot using plot(...,add=T), I tried this but didn't
> obtain the desired result.
>
> If a I have the following code:
>
> plot(x,y)
> rect(xleft, ybottom, xright,ytop,col='green)
>
>   The rectangle appear on top of the plot.

That's what you asked for by plotting it second.  Try something like

plot(x, y, type="n")
rect(xleft, ybottom, xright,ytop,col='green')
points(x, y)

> Any help will be greatly appreciated,
>
> Judith

-- 
Brian D. Ripley,                  ripley at stats.ox.ac.uk
Professor of Applied Statistics,  http://www.stats.ox.ac.uk/~ripley/
University of Oxford,             Tel:  +44 1865 272861 (self)
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