如何逐行构建数据框而不是列式？

Question

a <- "dog cat carrot cabbage"
b <- "orange cat chair cabbage"
c <- "dog phone book beach"
x <- data.frame(a,b,c)
> x
                       a                        b                    c
1 dog cat carrot cabbage orange cat chair cabbage dog phone book beach

所以这是建立在列.我想要的是一个1列数据框,每个字符串作为一行.我该怎么办？

Answer 1

d <- c(a,b,c)
data.frame(d)

输出:

                         d
1   dog cat carrot cabbage
2 orange cat chair cabbage
3     dog phone book beach