将一个列数据帧重新整形为R中的两列

Question

let say I such a data frame(df) with chracters

head
---
a
b
c
d
e
f

I want to reshape df as

head1   head2
-----   -----
a        b
c        d
e        f

How can I do such a reshape without using any loop. I will be very glad for any help. Thanks a lot.

Answer 1

We can transpose ( t ) the dataset (which will be matrix ), then call the matrix with the ncol , and reconvert it to data.frame

 as.data.frame(matrix(t(df1), ncol=2, 
          byrow=TRUE), stringsAsFactors=FALSE)
 #  V1 V2
 #1  a  b
 #2  c  d
 #3  e  f