Rbind R中两个或多个列表中的对应元素

Rbind corresponding elements in two or more lists in R

我有 3 个列表,每个列表有 500 个元素。这里出于演示目的,我有 2 个列表,每个列表有 1 个元素:

structure(list(timeseries = c(1, 7, 59), t = c(1, 3, 7)), .Names = c("timeseries", "t"), row.names = c(NA, 3L), class = "data.frame")   

structure(list(timeseries = c(5, 6, 7), t = c(8, 9, 10)), .Names = c("timeseries", "t"), row.names = c(NA, 3L), class = "data.frame") 

我的目标是将列表 1 中的第一个元素与列表 2 和 3 中的第一个元素绑定。然后,列表 1 中的第二个元素与列表 2 和 3 中的第二个元素绑定。依此类推。

在我的例子中,我最终会得到一个这种形式的列表

structure(list(timeseries = c(1,7,59,5, 6, 7), t = c(1,3,7,8, 9, 10)), .Names = c("timeseries", "t"), row.names = c(NA, 6L), class = "data.frame") 

我该怎么做?

谢谢!

****编辑*** 预期结果的改进示例。我有a和b。我想获得C.

a<-list(structure(list(timeseries = c(1, 7, 59), t = c(1, 3, 7)), .Names = c("timeseries", "t"), row.names = c(NA, 3L), class = "data.frame"),
structure(list(timeseries = c(1, 7, 59), t = c(1, 3, 7)), .Names = c("timeseries", "t"), row.names = c(NA, 3L), class = "data.frame"))


b<-list(structure(list(timeseries = c(2, 3, 5), t = c(2, 4, 6)), .Names = c("timeseries", "t"), row.names = c(NA, 3L), class = "data.frame"),
        structure(list(timeseries = c(60, 70, 80), t = c(20, 30, 40)), .Names = c("timeseries", "t"), row.names = c(NA, 3L), class = "data.frame"))


c<-list(structure(list(timeseries = c(1, 7, 59, 2,3, 5), t = c(1, 3, 7, 2, 4, 6)), .Names = c("timeseries", "t"), row.names = c(NA, 6L), class = "data.frame"),
        structure(list(timeseries = c(1, 7, 59, 60, 70, 80), t = c(1, 3, 7, 20, 30, 40)), .Names = c("timeseries", "t"), row.names = c(NA, 6L), class = "data.frame"))

假设ab的长度相同我们可以做

lapply(seq_along(a), function(x) rbind(a[[x]], b[[x]]))

#[[1]]
#  timeseries t
#1          1 1
#2          7 3
#3         59 7
#4          2 2
#5          3 4
#6          5 6

#[[2]]
#  timeseries  t
#1          1  1
#2          7  3
#3         59  7
#4         60 20
#5         70 30
#6         80 40

seq_along 生成从 1 到对象长度的序列。如果你这样做

seq_along(a) #you would get output as
#[1] 1 2

因为 length(a) 是 2。所以我们 rbind 数据帧一个接一个 rbind(a[[1]], b[[1]]) 首先,然后 rbind(a[[2]], b[[2]]) 等等。 lapply 确保最终输出是一个列表。

试试 map2 函数:

purrr::map2(a,b,rbind) -> d
identical(c,d)
# [1] TRUE