access sublists by a variable
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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