[R] Dynamically build variable names

[Stefan Petersson]

> 
> 
> I'm trying to dynamically build variable names to use on a list. Let's say I
have a list like this one:
> 
> l <- list(V1_1=c(1,2,3), V1_2=c('One','Two','Three'))
> 
> And I succesfully build my variable name like this:
> 
> paste('l$', 'V1_1', sep='')
> 
> Why can't I just run a mean call with the pasted variable name?
> 
> mean(paste('l$', 'V1_1', sep=''))
> 
> So, my question is; How do one build variable names dynamically to be able to
use them on an R list.
> 

I found a solution. After three days of banging my head, it just took me three
minutes after I posted. 

mean(unclass(eval(parse(text=paste('d$', 'V1_1', sep='')))))

I have no idea if this is considered 'good R coding'. It works, but I would
appreciate comments never the less...