[R] shadow between two lines in plot()

Ding, Rebecca RDing at ETS.ORG
Wed Aug 1 17:33:00 CEST 2007


 Dear R users,

I used the following code to draw a scatter plot. 

plot(x,y,type="n")
points(x,y,pch=1)

And then I used the abline functions to draw two lines. I want to add
the shadow between those two lines. 

abline(h=200)
abline(h=300)

Any suggestions?

Thanks

Rebecca

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