[R] How to shadow 'power' area?

[Christos Hatzis]

Look at the following link:

http://addictedtor.free.fr/graphiques/RGraphGallery.php?graph=88 

This should be pretty close to what you want.
HTH

-Christos

> -----Original Message-----
> From: r-help-bounces at stat.math.ethz.ch 
> [mailto:r-help-bounces at stat.math.ethz.ch] On Behalf Of Andrej Kastrin
> Sent: Monday, June 25, 2007 4:51 PM
> To: R-help
> Subject: [R] How to shadow 'power' area?
> 
> Dear all,
> 
> Suppose I plot two normal distributions (A and B) side by 
> side and add vertical line which hipotheticaly represent 
> alpha value; e.g.:
> 
> x <- seq(-3.5,5, length=1000)
> y <- dnorm(x)
> # Plot distribution A
> plot(y~x, type='l',axes=F,xlab="",ylab="",lwd=2)
> # Plot distribution B
> y2 <- dnorm(x-1.5)
> lines(y2~x,lwd=2)
> # Plot vertical line for alpha value
> abline(h=0)
> segments(qnorm(.5)+1.5,0,qnorm(.5)+1.5,dnorm(qnorm(.5)))
> text(2,0.2,"Power")
> 
> Now I want to shadow area labeled as "Power". Any suggestion 
> how to do that using 'polygon' function?
> 
> Thanks in advance for any suggestion.
> 
> Andrej
> 
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