R help - Jan 2011 - Plot 1:1 relationship

Dear list,

I am looking to plot a line on a graph to show the 1:1 relationship, in order to
demonstrate the pattern i have observed is off the line, however i am unsure. I
have tried abline but i can not see a function to plot the 1:1?


Any help would be greatly appreciated

#generate data
y <- rnorm(30, mean=1.5, sd= 0.005)
x <- rnorm(30, mean=1.5, sd= 0.005)
plot(x,y)

Thanks,

Peter

abline() takes the intercept and slope, which for a 1:1 relationship
are 0 and 1, respectively.
So:
abline(0, 1)

Sarah

On Fri, Jan 28, 2011 at 10:42 AM, Peter Francis <peterfrancis at me.com>
wrote:
> Dear list,
>
> I am looking to plot a line on a graph to show the 1:1 relationship, in
order to demonstrate the pattern i have observed is off the line, however i am
unsure. I have tried abline but i can not see a function to plot the 1:1?
>
>
> Any help would be greatly appreciated
>
> #generate data
> y <- rnorm(30, mean=1.5, sd= 0.005)
> x <- rnorm(30, mean=1.5, sd= 0.005)
> plot(x,y)
>
> Thanks,
>
> Peter
>
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> and provide commented, minimal, self-contained, reproducible code.
>


-- 
Sarah Goslee
http://www.functionaldiversity.org