[R] graphs

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Mary A. Marion schrieb:
> Hello,
>
> I am plotting two distributions and want to draw a vertical line at
> the critical point 149.
> How can I stop it from going further up than the norm(140,15) curve?
>
> x<-seq(75,225,0.1)
> plot(x,dnorm(x,mean=140, sd=15), type='l', col='navy')
> abline(v = 149, col = "black")
> curve(dnorm(x,mean=150, sd=15),from=75, to=225, col='orange', add=TRUE)
>
> Thank you.
>
> Sincerely,
> Mary A. Marion
>
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>
Hey,
in your case you shouldn't use the abline command. Instead try segment like:
segments(149, 0, 149, dnorm(149,mean=140, sd=15))

Regards,
Christian Porsche

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