Re: [R] as.formula doesn't want to take a phrase

From: Dimitri Liakhovitski <dimitri.liakhovitski_at_gmail.com>
Date: Mon, 18 Apr 2011 15:54:43 -0400

Makes sense, Marc - thanks a lot!

On Mon, Apr 18, 2011 at 3:54 PM, Marc Schwartz <marc_schwartz_at_me.com> wrote:
> On Apr 18, 2011, at 2:44 PM, Dimitri Liakhovitski wrote:
>
>> Hello!
>>
>> I am trying to create a formula object using as.formula. But it's not working:
>>
>> examplephraze<-"for.my.example"
>> myformula<-as.formula(paste(examplephraze,"~group, sum, data=mydata",sep=""))
>>
>> What's the problem?
>> Thanks a lot!
>
>
> The actual 'formula' part consists *only* of the actual model specification formula (LHS ~ RHS), not the additional arguments to a model function or other function that takes a formula as an argument (eg. boxplot()).
>
> Thus:
>
> myformula <- as.formula(paste(examplephraze,"~group"))
>
>> myformula
> for.my.example ~ group
>
>
> HTH,
>
> Marc Schwartz
>
>

-- 
Dimitri Liakhovitski
Ninah Consulting
www.ninah.com

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Received on Mon 18 Apr 2011 - 19:57:06 GMT

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