Dear Sir/Madam,
I have two vectors say x<-c(0,0,2.73,3.42,3.95,4.26)
and y<-c(0.0,0.5,1.20,1.90,2.6,3.3). I want to fit y as a function of x and
get the equation.Do I have to use glm() ?
Rangesh
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Rangesh Kunnavakkam wrote:> Dear Sir/Madam, > I have two vectors say x<-c(0,0,2.73,3.42,3.95,4.26) > and y<-c(0.0,0.5,1.20,1.90,2.6,3.3). I want to fit y as a function of x and > get the equation.Do I have to use glm() ?Depends on which underlying model you assume. Uwe Ligges> Rangesh > > [[alternative HTML version deleted]] > > ______________________________________________ > R-help at stat.math.ethz.ch mailing list > https://stat.ethz.ch/mailman/listinfo/r-help > PLEASE do read the posting guide! http://www.R-project.org/posting-guide.html
Just eyeballing your data it looks like a simple quadratic might be ok. plot(y ~ x) y.lm <- lm(y ~ poly(x, 2)) points(fitted(y.lm) ~ x, type = "b", col = 2) On 2/16/06, Rangesh Kunnavakkam <rangeshk at gmail.com> wrote:> Dear Sir/Madam, > I have two vectors say x<-c(0,0,2.73,3.42,3.95,4.26) > and y<-c(0.0,0.5,1.20,1.90,2.6,3.3). I want to fit y as a function of x and > get the equation.Do I have to use glm() ? > Rangesh > > [[alternative HTML version deleted]] > > ______________________________________________ > R-help at stat.math.ethz.ch mailing list > https://stat.ethz.ch/mailman/listinfo/r-help > PLEASE do read the posting guide! http://www.R-project.org/posting-guide.html >