[R] add a linear regression line to the plot

ONKELINX, Thierry Thierry.ONKELINX at inbo.be
Thu Jan 13 10:22:35 CET 2011

Such things are very easy with the ggplot2 package

Dataset <- data.frame(A = c(10,20,40,80), B = c(30,40,100,200))
ggplot(data = Dataset, aes(x = A, y = B)) + geom_point() +
geom_smooth(method = "lm")

More info and example on the ggplot2 website: http://had.co.nz/ggplot2/

Best regards,


ir. Thierry Onkelinx
Instituut voor natuur- en bosonderzoek
team Biometrie & Kwaliteitszorg
Gaverstraat 4
9500 Geraardsbergen

Research Institute for Nature and Forest
team Biometrics & Quality Assurance
Gaverstraat 4
9500 Geraardsbergen

tel. + 32 54/436 185
Thierry.Onkelinx op inbo.be

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say what the experiment died of.
~ Sir Ronald Aylmer Fisher

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~ Roger Brinner

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> -----Oorspronkelijk bericht-----
> Van: r-help-bounces op r-project.org 
> [mailto:r-help-bounces op r-project.org] Namens wangxipei
> Verzonden: donderdag 13 januari 2011 9:35
> Aan: r-help
> Onderwerp: [R] add a linear regression line to the plot
> Dear R users,
>    I am a new R user. My problem is very simple: I want to 
> add a linear regression line to the plot(type="p"), codes are 
> as below:
> x<-c(10,20,40,80)
> y<-c(30,40,100,200)
> plot(x,y,type="p")
> lines(lm(x~y),col="red",lwd=1.5)
> I got only plot without linear line.
> Many thanks ahead for your advice!
> Xipei Wang
> E-mail:wangxipei op gmail.com
> 	[[alternative HTML version deleted]]
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> and provide commented, minimal, self-contained, reproducible code.

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