[R] curve from a formula with ggplot2

[hadley wickham]

Hi Benoit,

Have a look at http://had.co.nz/ggplot2/stat_function.html.  Does that help?

Hadley

On Tue, Jul 7, 2009 at 11:15 AM, Benoit
Boulinguiez<benoit.boulinguiez at ensc-rennes.fr> wrote:
> Hi all,
>
> I'm smoothly transferring my lattice graphs to ggplot2 graphs, but I'm stuck
> on representing a curve from a formula.
> I'm looking for the equivalent of curve() in ggplot2, Hadley Wickham
> mentions geom_curve, but as far as I've seen in the help it doesn't exist.
>
> My need is to plot a regular scatter plot of experimental data (easy to do
> actually) and then add the fitting model according to a specific formula
> like
> y = a*(b*x^n)/(1+b*x^p)
>
> where a,b,n and p are known parameters.
>
> I guess it's possible and easy to add this layer with ggplot, somehow I
> didn't find the right function.
>
> Any help would be warmly appreciated.
>
> Regards/Cordialement
>
> -------------
> Benoit Boulinguiez
> Ph.D student
> Ecole de Chimie de Rennes (ENSCR) Bureau 1.20
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