[R] converting character strings to eval

[Roger D. Peng]

eval(parse(text = str))

-roger

Wayne Jones wrote:
> Hi there fellow R-users, 
> 
> I'm stuck on this seemingly trivial problem.
> 
> All I want to coerce a character string into a command. 
> 
> For example: 
> 
> x<-rnorm(20)
> y<-rnorm(20)
> str<-"lm(y~x)"
> 
> I want to evaluate the "str" command. 
> 
> I have tried 
> 
> eval(as.expression(str))
> 
> But it doesn't seem to work.  I am aware of the call command, but for
> reasons I won't go into I would prefer not to use it. 
> 
> Any help would be great. 
> 
> Regards,
> Wayne
> 
> 
> 
> 
> 
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