在R的数据框中合并两个列表 [英] Combine two lists in a dataframe in R

问题描述

我有两个结构不同的列表:

I have two lists with different structure:

listA <- list(c("a","b","c"), c("d","e"))
listB <- list(0.05, 0.5)

listA
[[1]]
[1] "a" "b" "c"

[[2]]
[1] "d" "e"

listB
[[1]]
[1] 0.05

[[2]]
[1] 0.5

我对如何使用循环将两个列表合并到一个看起来像下面的数据框中的列表有一个想法，但是我敢肯定，这样做有更有效的方法.

I have an idea of how to use looping to combine both lists in a dataframe that looks like the one below but I'm sure that there is a more efficient way of doing this.

data.frame(A = c("a","b","c","d","e"), B = c(rep(0.05,3), rep(0.5,2)))
  A    B
1 a 0.05
2 b 0.05
3 c 0.05
4 d 0.50
5 e 0.50

推荐答案

这是另一种选择:

do.call(rbind, Map(data.frame, A=listA, B=listB))

#   A    B
# 1 a 0.05
# 2 b 0.05
# 3 c 0.05
# 4 d 0.50
# 5 e 0.50

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