CODEWITHSUNDEEP
r
Дмитрий Юзов
Дмитрий Юзов

Reputation: 55

How to write lists to data. table?

I have lists:

          list[30]    list of length 30
[[1]]  character[3]    '10' '20' '30'
[[2]]  character[3]    '30' '40' '50'
[[3]]  character[3]    '60' '70' '80'
....   ...........     ..............

How can this be converted to data.table?

What I want to get:

|   f1  |
|-------|
| '10' '20' '30|
|'30' '40' '50'|
|'60' '70' '80'|

Updated:

dt <- lapply(strsplit(df, " "), function(x) as.character(p.adjust(as.numeric(x))))

dput():

list(c("10", "20", "30"), c("40", "50", "60"
), c("70", "80", "90"))

Upvotes: 1

Views: 82

Answers (1)

Ronak Shah
Ronak Shah

Reputation: 388982

You can try :

val <- list(c("10", "20", "30"), c("40", "50", "60"), c("70", "80", "90")) 
result <- data.table::data.table(f1 = lapply(val, as.numeric))
result

#         f1
#1: 10,20,30
#2: 40,50,60
#3: 70,80,90

str(result)

#Classes ‘data.table’ and 'data.frame': 3 obs. of  1 variable:
# $ f1:List of 3
#  ..$ : num  10 20 30
#  ..$ : num  40 50 60
#  ..$ : num  70 80 90
# - attr(*, ".internal.selfref")=<externalptr>

Upvotes: 2

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