[R] fitting non-liner curves

[Gabor Grothendieck]

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
>
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