CODEWITHSUNDEEP
rdataframe
Aslan
Aslan

Reputation: 91

merging two columns of data frame in R

Consider this data frame in R which contains two columns named a and b:

a     b
a1   b1  
a2   b2  
a3   b3

I want to produce a list by merging columns a and b in this way:

 a1  b1  a2  b2  a3  b3

How can i do this?

Upvotes: 3

Views: 144

Answers (1)

akrun
akrun

Reputation: 886938

We can transpose (t) the dataset and then concatenate (c) the matrix output to get a vector

 c(t(df1))
 #[1] "a1" "b1" "a2" "b2" "a3" "b3"

Or use as.vector. 

 as.vector(t(df1))
 #[1] "a1" "b1" "a2" "b2" "a3" "b3"

Usually, for converting a 'data.frame' to 'vector', unlist is used, but it will unlist by column wise. That is the reason for transposing the dataset and using c or as.vector.

Or to get list output, as.list can be used.

  as.list(t(df1))

Upvotes: 3

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