R將列表轉換爲數據框

Question

A<-c("a","b","c","d") 
B<-c("a","b","c","d") 
C<-list(c("a","b","c","d"),c("a","b","c","d")) 
D<-c("a","b","c","d") 

x<-list(A,B,C,D) 

如何將列表x轉換爲數據框而不使用「for」？

Answer 1

數據幀需要有相同長度的列。你的C列只有兩個元素，因爲它由兩個列表組成，每個列表中有四個項目，我假設C是一個2列4行數據框。爲最終數據框中更好的列名命名列表元素。

A<-c("a","b","c","d") 
B<-c("a","b","c","d")  
C<-list(C1 = c("a","b","c","d"), C2= c("a","b","c","d")) 
D<-c("a","b","c","d") 
df <- data.frame(A, B, C, D)