[R] Arrange a multi-level list to a one-level list

[Lisa]

Dear all,

I just want to arrange a multi-level list to a one-level list. For example:

x <- list(list(matrix(sample(c(0,1), 4, replace = T), 2),
matrix(sample(c(2,3), 4, replace = T), 2)),
list(matrix(sample(c(0,1), 6, replace = T), 2), matrix(sample(c(2,3), 6,
replace = T), 2)))

> x
[[1]]
[[1]][[1]]
     [,1] [,2]
[1,]    1    1
[2,]    0    0

[[1]][[2]]
     [,1] [,2]
[1,]    3    2
[2,]    3    3


[[2]]
[[2]][[1]]
     [,1] [,2] [,3]
[1,]    1    0    0
[2,]    0    1    0

[[2]][[2]]
     [,1] [,2] [,3]
[1,]    2    3    3
[2,]    3    3    3

If I do this work one time, I will arrange it like this:
 
c(x[[1]], x[[2]]) # Only consider the first level of the list.

[[1]]
     [,1] [,2]
[1,]    1    1
[2,]    0    0

[[2]]
     [,1] [,2]
[1,]    3    2
[2,]    3    3

[[3]]
     [,1] [,2] [,3]
[1,]    1    0    0
[2,]    0    1    0

[[4]]
     [,1] [,2] [,3]
[1,]    2    3    3
[2,]    3    3    3

But when I repeat this work many times and the levels will change each time
in a loop, how can I pass the arguments to c()? For example, in the first
iteration, the first level of a list is 3, in the second iteration, the
first level of a list is 5? ….

Any help would be greatly appreciated. 

Lisa


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