如何转置列表的每个向量,给它们分配一个唯一的数字,并将其绑定到r中?

时间:2019-02-07 16:21:48

标签: r list dataframe type-conversion

我有以下列表,并且想创建一个data.frame,其中每个列表(有很多)组合在一起。这里是一个例子:

v11 <- c("was_on_the_moon", "safe", "best", "super")
v22 <- c("no", "yes", "three", "four")
dat1 <- data.frame(cbind(v11, v22))
v11 <- c("was_on_the_moon", "safe", "best", "super")
v22 <- c("no", "yes", "three", "four")
dat2 <- data.frame(cbind(v11, v22))
list_first <- list(dat1, dat2)

结果应如下:

  was_on_the_moon safe   best super 
1 yes              yes  three  four
2 no              sure  check  four

2 个答案:

答案 0 :(得分:1)

一种tidyverse解决方案:

map(list_first, ~ setNames(., c("var", "val"))) %>%
  bind_rows(.id = "id") %>%
  spread(var, val)

答案 1 :(得分:-1)

a <- unlist(myfiles, recursive = FALSE)
names <- a$V1
t(sapply(myfiles, function(x) setNames(x$V11, names)[match(names, x$V22)]))