[R] How to fix an error in nonlinear regression

[John Kane]

You have subset=state==”treated”). You need to change "treated” to
"treated". Tho " " are formatted in your example.

On Wed, 27 May 2020 at 15:48, Vahid Borji <vahid.borji65 using gmail.com> wrote:

> Hello my R friends,
> I am using the below commands in R:
>
> attach(Puromycin)
> Puromycin
> plot(Puromycin$conc,Puromycin$rate)
> mm=function(conc,vmax,k) vmax*conc/(k+conc)
> mm
>
> mm1=nls(rate~mm(conc,vmax,k),data=Puromycin,start=c(vmax=50,k=0.05),subset=state==”treated”)
> mm1
>
> Unfortunately,  I receive the below error:
>
> Error: unexpected input in
>
> "mm1=nls(rate~mm(conc,vmax,k),data=Puromycin,start=c(vmax=50,k=0.05),subset=state==”"
>
> How can I fix this error?
>
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>
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-- 
John Kane
Kingston ON Canada

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