CODEWITHSUNDEEP
rrandombinary
user3091668
user3091668

Reputation: 2310

Random binary distribuition

I would like to generate a random binary combination (row order) in my dataframe df:

bin
 2
 2
 2
 2
 3
 2
 3
 2

In this example I intend to generate 6 times 0 (the same number of 2) and two times 1 (the same number of 3). I expect something like that:

bin 
 0
 0
 1
 0
 0
 1
 0
 0

Any ideas? Thank you

Upvotes: 0

Views: 50

Answers (1)

MrFlick
MrFlick

Reputation: 206536

So given a vector bin

bin<-c(2,2,2,2,3,2,3,2)

You would like to create a new vector that contains the same number of 0's as the number of 2's in bin, and the same number of 1's as the number of 3's in bin. Assuming that's correct, then

sample(rep(0:1, table(bin)))

Should do the trick. Here are the results of running that command several times:

# 0 0 0 0 1 1 0 0
# 0 0 0 1 0 0 1 0
# 0 0 0 1 0 0 1 0
# 0 0 1 0 1 0 0 0

Upvotes: 3

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