Re: [R] simple question about variables....

From: Jacques VESLOT <jacques.veslot_at_good.ibl.fr>
Date: Thu 13 Jul 2006 - 18:09:47 EST

see ?"$"
'x$name' is equivalent to 'x[["name"]]'

so you need use :
eval(parse(text = paste("OBJ$", varname)))



Jacques VESLOT

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Stéphane Cruveiller a écrit :
> Dear R users,
>
> I have a simple question on variable manipulation.
> Imagine I have an object "OBJ" that has "toto" as one of its variables.
> I would like to understand why if I do
>
> > varname <- "toto"
>
> >OBJ$varname returns no results
>
> whereas
>
> > OBJ[varname] returns the column entitled
> "toto"
>
>
> Thanks for your help.
>
> Stéphane.
>
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R-help@stat.math.ethz.ch mailing list
https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide! http://www.R-project.org/posting-guide.html Received on Thu Jul 13 18:14:30 2006

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