[R] using names inside a loop

[Alberto Murta]

I expected that something like

> for(i in names(my.data.frame)){j <- as.name(i); print(my.data.frame$j)}

should work in R (and S). There's always the possibility of using  

> for(i in names(my.data.frame)){print(my.data.frame[,i])}

but can someone someone tell me why doesn't the 1st option work also?
Thanks

Alberto

-- 
                           Alberto G. Murta                      
           IPIMAR - Institute of Fisheries and Sea Research
            Avenida de Brasilia, 1449-006 Lisboa, Portugal       
Tel:+351 213027062; Fax:+351 213015849; http://www.ipimar.pt/pelagicos/
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