How to name list elements

Question

I create a list and I want to name the elements of the list. Could somebody help me on this?

LL <- vector(mode = "list")

L11 <- seq(1, 10)
L12 <- seq(11, 20)
LL[[length(LL)+1]] <- cbind(L11, L12)   
# I want to name LL[[1]] as "L1", but this does not work
names(LL[[length(LL)]]) <- c("L1")

L21 <- seq(21, 30)
L22 <- seq(31, 40)
LL[[length(LL)+1]] <- cbind(L21, L22)
# I want to name LL[[2]] as "L2", but this does not work
names(LL[[length(LL)]]) <- c("L2")

LL

Was just going to offer that... Probably a more general solution is `names(LL) <- paste0("L", 1:length(LL))` — David Arenburg, Jul 19 '15 at 11:51
yes, indeed, but I want to name each element separately. More generally how do we name an element of a list. — Apostolos, Jul 19 '15 at 11:51
Then just `names(LL)[1L] <- "L1"` and etc. See [here](http://stackoverflow.com/questions/23427925/difference-between-namesdf1-and-namesdf1) in order to understand the difference. — David Arenburg, Jul 19 '15 at 11:54

score 0 · Answer 1 · edited Jul 19 '15 at 11:56

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This should work

LL <- vector(mode = "list") 
LL$l1 <- seq(1, 10)
LL$l2 <- seq(11, 20)

edited Jul 19 '15 at 11:56

David Arenburg

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answered Jul 19 '15 at 11:55

Chirayu Chamoli

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score 0 · Accepted Answer · edited May 23 '17 at 10:28

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According to David Arenburg (see comment above):

names(LL)[1L] <- "L1"

See here to understand how it works.

edited May 23 '17 at 10:28

Community

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answered Jul 19 '15 at 12:32

Apostolos

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How to name list elements

2 Answers2