[R] how to plot shaded area under a curve?

[jim holtman]

try this:

> x=seq(0,5,len=100)
> y=-(x-5)^2
>
> plot(x,y)
> polygon(c(x,x[length(x)]), c(y, y[1]), col='red')


On 9/13/07, gallon li <gallon.li at gmail.com> wrote:
> say, I am plotting
>
> x=seq(0,5,len=100)
> y=-(x-5)^2
>
> plot(x,y)
>
> how can I put some color or verticle lines below the plotted curve?
>
>        [[alternative HTML version deleted]]
>
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-- 
Jim Holtman
Cincinnati, OH
+1 513 646 9390

What is the problem you are trying to solve?