Rename list of lists using a named list - r

Question

So I'm working with a list that contains other lists inside, with this structure:
library(graph)
library(RBGL)
library(Rgraphviz)
show(tree)
$`SO:0001968`
$`SO:0001968`$`SO:0001622`
$`SO:0001968`$`SO:0001622`$`SO:0001624`
$`SO:0001968`$`SO:0001622`$`SO:0001624`$`SO:0002090`
[1] 1
$`SO:0001968`$`SO:0001622`$`SO:0001623`
$`SO:0001968`$`SO:0001622`$`SO:0001623`$`SO:0002091`
[1] 1
$`SO:0001968`$`SO:0001969`
$`SO:0001968`$`SO:0001969`$`SO:0002090`
[1] 1
$`SO:0001968`$`SO:0001969`$`SO:0002091`
[1] 1
dput(tree)
list(`SO:0001968` = list(`SO:0001622` = list(`SO:0001624` = list(
`SO:0002090` = 1), `SO:0001623` = list(`SO:0002091` = 1)),
`SO:0001969` = list(`SO:0002090` = 1, `SO:0002091` = 1)))
The data I use to build the list comes from an object called g:
show(g)
A graphNEL graph with directed edges
Number of Nodes = 7
Number of Edges = 8
dput(g)
new("graphNEL",
nodes = c("SO:0001968", "SO:0001969", "SO:0001622",
"SO:0001623", "SO:0001624", "SO:0002090", "SO:0002091"), edgeL = list(
`SO:0001968` = list(edges = 3:2), `SO:0001969` = list(edges = 6:7),
`SO:0001622` = list(edges = 5:4), `SO:0001623` = list(edges = 7L),
`SO:0001624` = list(edges = 6L), `SO:0002090` = list(edges = integer(0)),
`SO:0002091` = list(edges = integer(0))), edgeData = new("attrData",
data = list(`SO:0001968|SO:0001622` = list(weight = 1), `SO:0001968|SO:0001969` = list(
weight = 1), `SO:0001969|SO:0002090` = list(weight = 1),
`SO:0001969|SO:0002091` = list(weight = 1), `SO:0001622|SO:0001624` = list(
weight = 1), `SO:0001622|SO:0001623` = list(weight = 1),
`SO:0001623|SO:0002091` = list(weight = 1), `SO:0001624|SO:0002090` = list(
weight = 1)), defaults = list(weight = 1)), nodeData = new("attrData",
data = list(`SO:0001968` = list(label = "coding_transcript_variant"),
`SO:0001969` = list(label = "coding_transcript_intron_variant"),
`SO:0001622` = list(label = "UTR_variant"), `SO:0001623` = list(
label = "5_prime_UTR_variant"), `SO:0001624` = list(
label = "3_prime_UTR_variant"), `SO:0002090` = list(
label = "3_prime_UTR_intron_variant"), `SO:0002091` = list(
label = "5_prime_UTR_intron_variant")), defaults = list(
label = NA_character_)), renderInfo = new("renderInfo",
nodes = list(), edges = list(), graph = list(), pars = list()),
graphData = list(edgemode = "directed"))
Each SO:000XXX corresponds to a name, and I can find the names using the function nodeData, that returns a named list:
nodeData(g, nodes(g), "label")
$`SO:0001968`
[1] "coding_transcript_variant"
$`SO:0001969`
[1] "coding_transcript_intron_variant"
$`SO:0001622`
[1] "UTR_variant"
$`SO:0001623`
[1] "5_prime_UTR_variant"
$`SO:0001624`
[1] "3_prime_UTR_variant"
$`SO:0002090`
[1] "3_prime_UTR_intron_variant"
$`SO:0002091`
[1] "5_prime_UTR_intron_variant"
What I need is to replace (or rename) the data in the tree list with the corresponding string of the nodeData function.
For example, replace the 'SO:0001968' in the tree list for coding_transcript_variant from the nodeData function.

Answer 1

This recursive function should do the trick :
# you will do this but I couldn't install your packages
# nodeD <- nodeData(g, nodes(g), "label")
nodeD <- list(`SO:0001968` = "coding_transcript_variant",
`SO:0001969` = "coding_transcript_intron_variant",
`SO:0001622` = "UTR_variant",
`SO:0001623` = "5_prime_UTR_variant",
`SO:0001624` = "3_prime_UTR_variant",
`SO:0002090` = "3_prime_UTR_intron_variant",
`SO:0002091` = "5_prime_UTR_intron_variant")
rename_items <- function(item){
if (is.list(item)){
item <- lapply(item,rename_items)
names(item) <- unname(nodeD[names(item)])
}
item
}
tree2 <- rename_items(tree)
Result
# $coding_transcript_variant
# $coding_transcript_variant$UTR_variant
# $coding_transcript_variant$UTR_variant$`3_prime_UTR_variant`
# $coding_transcript_variant$UTR_variant$`3_prime_UTR_variant`$`3_prime_UTR_intron_variant`
# [1] 1
#
#
# $coding_transcript_variant$UTR_variant$`5_prime_UTR_variant`
# $coding_transcript_variant$UTR_variant$`5_prime_UTR_variant`$`5_prime_UTR_intron_variant`
# [1] 1
#
#
#
# $coding_transcript_variant$coding_transcript_intron_variant
# $coding_transcript_variant$coding_transcript_intron_variant$`3_prime_UTR_intron_variant`
# [1] 1
#
# $coding_transcript_variant$coding_transcript_intron_variant$`5_prime_UTR_intron_variant`
# [1] 1

Answer 2

If you save the output from nodeData() to a vector, you can use the names() function to assign the names to a list().
An example of assigning names to list elements:
x <- 1:5
y <- 11:20
z <- 21:25
theList <- list(x,y,z)
listNames <- c("element1","element2","element3")
names(theList) <- listNames
# access first element by name, using $ form of extract operator
theList$element1
...and the output:
> theList$element1
[1] 1 2 3 4 5
>
You may need to unlist() the output of nodeData() as follows:
theNames <- unlist(nodeData(g, nodes(g), "label"))
names(g) <- theNames