How to create a Three Dimensional List in R


How to create a Three Dimensional List in R ?

Answer

In R, you can create a three-dimensional list using nested lists, where each inner list represents a 2D plane within the 3D structure.



✐ Examples

1 Create a 3D List of Integers

In this example,

  1. We initialize a 3D list using nested lists with multiple brackets, where each inner list represents a 2D plane.
  2. We can populate the 3D list with integers or perform operations on each element using nested loops.

R Program

matrix_3d <- list(
    list(c(1, 2), c(3, 4)),
    list(c(5, 6), c(7, 8)),
    list(c(9, 10), c(11, 12))
)
print(matrix_3d)

Output

[[[1, 2], [3, 4]], [[5, 6], [7, 8]], [[9, 10], [11, 12]]]

2 Create a 3D List of Strings

In this example,

  1. We initialize a 3D list using nested lists with multiple brackets, where each inner list represents a 2D plane of strings.
  2. We can populate the 3D list with strings or perform operations on each element using nested loops.

R Program

matrix_3d <- list(
    list(c('a', 'b'), c('c', 'd')), 
    list(c('e', 'f'), c('g', 'h'))
)
print(matrix_3d)

Output

[[['a', 'b'], ['c', 'd']], [['e', 'f'], ['g', 'h']]]

Summary

In this tutorial, we learned How to create a Three Dimensional List in R language with well detailed examples.




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