Re: [R] horizontal and vertical line with arrow in a plot

From: John Kane <jrkrideau_at_yahoo.ca>
Date: Fri, 04 Jun 2010 09:44:08 -0700 (PDT)


# A very quick example of how to draw an arrow on a graph. plot(1:10)
text(2,5, "Point 5 ", cex=.8)
arrows(3,5, 4.5, 5)

> From: Roslina Zakaria <zroslina_at_yahoo.com>
> Subject: [R] horizontal and vertical line with arrow in a plot
> To: r-help_at_r-project.org
> Received: Thursday, June 3, 2010, 11:34 PM
> Hi r-users,
>
> I would like to add a plot of vertical line segment with
> arrow from (77,.6) to (77,0) and also a horizontal  line
> segment with arrow from (0,0.6) to (77,.6) .  So far this
> is what I have:
>
> plot(sq, cdf, type="l", lwd=4,col="blue",xaxs="i",yaxs="i",
> xlab= "Rainfall (mm)", ylab= "Random no.",
> main="Random number  and rainfall totals (mm)")
> abline(v=77,h=0.6,col=2,lwd=2,lty=3)
> text(120,0.63, "r = 0.6")
> text(120,0.05, "x = 70")
>
> I also tried to use the 'diagram' and 'shape' package but
> not really sure how to use them.
>
> Thank you for all the help given.
>
>
>      
>     [[alternative HTML version deleted]]
>
>
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>



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https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code. Received on Fri 04 Jun 2010 - 16:47:12 GMT

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