Duplicating values in a column

Question

I have a df:

> df
# A tibble: 3 x 2
   Class word    
   <fct> <chr>   
 1 Y     nature
 2 Y     great
 3 Y     are

I would like to repeat each value in word a specific number of times. For example, I want to repeat it 4 times:

> df
# A tibble: 12 x 2
   Class word    
   <fct> <chr>   
 1 Y     nature
 2 Y     nature
 3 Y     nature     
 4 Y     nature
 5 Y     great
 6 Y     great
 7 Y     great
 8 Y     great
 9 Y     are
10 Y     are
11 Y     are
12 Y     are

How do I do this using rep()?

score 5 · Accepted Answer · answered Jul 29 '21 at 03:37

5

We can use uncount

library(tidyr)
library(dplyr)
df %>%
    uncount(4) %>%
    as_tibble

Or with rep

df[rep(seq_len(nrow(df)), each = 4),]

answered Jul 29 '21 at 03:37

akrun

789,025
32
460
575

score 1 · Answer 2 · answered Jul 29 '21 at 03:57

1

We could use this:

library(dplyr)
df %>% slice(rep(1:n(), each = 4))

answered Jul 29 '21 at 03:57

TarJae

43,365
4
14
40

Duplicating values in a column

2 Answers2