Message-ID: <4D2F02B2.4020100@uke.uni-hamburg.de>
Date: 2011-01-13T13:48:34Z
From: Eik Vettorazzi
Subject: add a linear regression line to the plot
In-Reply-To: <1666b43.87c5.12d7e83cb3b.Coremail.wangxipei@gmail.com>
Hi,
> lines(lm(x~y),col="red",lwd=1.5)
should be
abline(lm(y~x),col="red",lwd=1.5)
hth.
Am 13.01.2011 09:35, schrieb wangxipei:
>
> 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 at gmail.com
> [[alternative HTML version deleted]]
>
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--
Eik Vettorazzi
Department of Medical Biometry and Epidemiology
University Medical Center Hamburg-Eppendorf
Martinistr. 52
20246 Hamburg
T ++49/40/7410-58243
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