Message-ID: <CADv2QyFuQdE823sMGJ+=om=qEFvdYDEE=RSTyNUg4v7bDa1_dQ@mail.gmail.com>
Date: 2011-11-16T18:20:08Z
From: Dennis Murphy
Subject: access sublists by a variable
In-Reply-To: <4EC3D3C9.5070004@allesjetzt.net>
Hi:
Try dict[[a]] rather than dict$a, and read the section on lists in the
Introduction to R manual to learn how to properly index them.
HTH,
Dennis
On Wed, Nov 16, 2011 at 7:16 AM, Antje Gruner <ntj at allesjetzt.net> wrote:
> Dear list,
>
> I'd like to access the elements of a list within another list with the
> help of a variable.
>
> dict <- list( ?"24" = c(1,2,3,6,12,24,48,72,96,120,144,168,720),
> ? ? ? ? ?"168" = c(1,12,24,48,72,96,120,144,168,336,504,672),
> ? ? ? ? "8760" = c(1,24,168,730,4380,8760)
> ? ? ? ?)
>
> dict$"24" works fine, but
>
> a <- "24"
> dict$a
>
> returns ?NULL
>
> Unfortunately dict[a] does not work for me, because I see no possibility
> to access the inner elements of list "24" in that case
> i.e. dict[a][1] returns the whole list and not the first element.
>
> What is the correct syntax to access those elements with the help of a
> variable?
> Thanks in advance
>
> Antje
>
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