[R] non linear models

[Christian Endter]

Dear Members of the Help List,

Honestly, I feel a little bit stupid - I would like to do something rather
simple: fit a non linear model to existing data, to be more precise I wanted
to start with simple higher order polynomials.

Unfortunately, I do not quite understand the examples in the helpfiles for
the nlm, nls and nlsModel commands.

Could anyone please provide a simple example to get me started (i.e. y = p +
x^2 fitted to x= -1 0 1 y = 2 1 2; a simple parabola p should turn out to be
1). How do I do this and how do I do the same for something like y = a + bx
+ cx^2 + dx^3 ??


Thank you very much,

Christian Endter

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