填充柱與NA爲短串

Question

假設我有一個看起來像這樣的列的數據幀：

E <- data.frame(
    c("a brown fox"), 
    c("something"), 
    c("else") 
) 
E <- as.data.frame(t(E)) 

          V1 
c..a.brown.fox.. a brown fox 
c..something..  something 
c..else..    else 

我想將它拆分成多列這樣的：

V1   V2  V3 
a   brown fox 
something NA  NA 
else  NA  NA 

但它找出來是這樣的：

pacman::p_load(qdap) # or use library() or whatever 
colsplit2df(E, sep = " ") 
         X1  X2  X3 
c..a.brown.fox..   a  brown  fox 
c..something.. something something something 
c..else..    else  else  else 

Answer 1

你可以做

library(splitstackshape) 
cSplit(E, 1, " ") 
#   V1_1 V1_2 V1_3 
# 1:   a brown fox 
# 2: something NA NA 
# 3:  else NA NA