In addition you may want to include asp=1 and pty='s' to the plot command. -- Gregory (Greg) L. Snow Ph.D. Statistical Data Center Intermountain Healthcare greg.s...@imail.org 801.408.8111
> -----Original Message----- > From: r-help-boun...@r-project.org [mailto:r-help-bounces@r- > project.org] On Behalf Of Sarah Goslee > Sent: Friday, January 28, 2011 10:53 AM > To: Peter Francis > Cc: r-help@r-project.org > Subject: Re: [R] Plot 1:1 relationship > > 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 <peterfran...@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 > > > > ______________________________________________ > > R-help@r-project.org mailing list > > 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. > > > > > > -- > Sarah Goslee > http://www.functionaldiversity.org > > ______________________________________________ > R-help@r-project.org mailing list > 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. ______________________________________________ R-help@r-project.org mailing list 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.
