[R] How to fix an error in nonlinear regression

[Vahid Borji]

Thanks a lot.

On Thu, May 28, 2020 at 1:15 AM John Kane <jrkrideau using gmail.com> wrote:

> 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?
>>
>>         [[alternative HTML version deleted]]
>>
>> ______________________________________________
>> R-help using r-project.org mailing list -- To UNSUBSCRIBE and more, see
>> https://stat.ethz.ch/mailman/listinfo/r-help
>> PLEASE do read the posting guide
>> http://www.R-project.org/posting-guide.html
>> and provide commented, minimal, self-contained, reproducible code.
>>
>
>
> --
> John Kane
> Kingston ON Canada
>

	[[alternative HTML version deleted]]