[R] shading (fill) the area between two lines

[Duncan Murdoch]

On 11/01/2018 7:43 PM, AbouEl-Makarim Aboueissa wrote:
> Dear All:
> 
> 
> I am trying to shade the area between the two lines; *line 1* and *line 2*.

The help page for polygon() gives some examples of this.

Duncan Murdoch
> 
> 
> 
> You can use this code as an example.
> 
> 
> x100<-c(-1,1,2,3,4,5,6,3)
> y100<-c(4,5,3,1,4,4,2,-1)
> 
> plot(x100,y100)
> 
> 
> *#####  line1*
> 
> abline(a=-(Beta0-1)/Beta[1,2], b=-Beta[1,1]/Beta[1,2], lwd = 3,
> col="skyblue", lty=3) ##### lty=3,
> 
> *##### line 2*
> 
> abline(a=-(Beta0+1)/Beta[1,2], b=-Beta[1,1]/Beta[1,2], lwd = 3,
> col="skyblue", lty=3) ##### lty=3,
> 
> 
> 
> 
> thank you very much for your help
> with thanks
> abou
> ______________________
> 
> 
> *AbouEl-Makarim Aboueissa, PhD*
> 
> *Professor of Statistics*
> 
> *Department of Mathematics and Statistics*
> *University of Southern Maine*
> 
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> 
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