CODEWITHSUNDEEP
r
user10256905
user10256905

Reputation: 185

Turning a dataframe into named list

I have a data frame of colors and ids and want to turn them into a list with the colors as the name and the id as the value

colors <- data.frame(color = c('Gold', 'Green', 'Red'), id = c('1','2','3'))

this is a small sample of the data frame, as there are a lot more rows.

I am trying to get the results to be equivalent as the output when you write: 

colorlist <- list('Gold' = 1, 'Green' = 2, 'Red' = 3)

Upvotes: 0

Views: 1362

Answers (4)

s_baldur
s_baldur

Reputation: 33743

setNames(as.list(colors$id), nm = colors$color)
$Gold
[1] "1"

$Green
[1] "2"

$Red
[1] "3"

Upvotes: 6

MrH
MrH

Reputation: 101

Try this. Looks a lot like MKBakker's solution. I added as.integer() so the result as you described:

colorlist <- as.list(as.integer(colors$id))
names(colorlist) <- colors$color

Upvotes: 0

Cris
Cris

Reputation: 796

With split:

colorlist = split(x=colors$id, f=colors$color)

If levels are a problem just turn the id into character:

colorlist = split(x=as.character(colors$id), f=colors$color)

Upvotes: 5

P1storius
P1storius

Reputation: 947

Try:

colors <- data.frame(color = c('Red', 'Green', 'Gold'), id = c('1','2','3'))

colors_list <- as.list(as.character(colors$id))
names(colors_list) <- colors$color

colors_list

Upvotes: 2

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