Re: [R] How to avoid "$ operator is invalid for atomic vectors"

From: John Kane <jrkrideau_at_yahoo.ca>
Date: Thu, 06 Nov 2008 10:40:32 -0800 (PST)

Does this help
(mylist <- list(NULL))

(mylist[[3]] <- data.frame(a=1:4, b=letters[1:4])) mylist

(mylist[[2]] <- matrix(1:12, nrow=4))

mylist

> From: cruz <cruadam_at_gmail.com>
> Subject: Re: [R] How to avoid "$ operator is invalid for atomic vectors"
> To: r-help_at_r-project.org
> Received: Thursday, November 6, 2008, 1:16 PM
> Thanks for all the responses, they are all very helpful:)
>
> > you don't need to assign dimension or classes to
> your objects.
> > It's easier if you do like this
>
> this is something that really bothers me, when I need to
> define an
> object which i will later fill with data, the dimension of
> this object
> should not be fixed because it will grow...
>
> so in MATLAB, i.e. we define x = [ ],
> what about in R?
>
> Thanks,
> cruz
>
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