How to Rotate Items in a Vector in R

How to Rotate Items in a Vector in R ?

Answer

To rotate items in a vector in R, you can use the combination of negative indexing and concatenation.


✐ Examples

1 Rotate Items in Vector to the Left

In this example,

  1. First, you define a vector containing the elements you want to rotate.
  2. Next, you specify the number of positions to rotate the items to the left. For left rotation, you use negative indexing.
  3. Then, you extract the rotated elements using negative indexing from the specified position to the end of the vector.
  4. Finally, you concatenate the rotated elements with the elements from the beginning to the specified position.

R Program

# Define a vector containing elements
vector <- c(1, 2, 3, 4, 5)

# Specify the number of positions to rotate the items to the left
rotate_by <- 2

# Extract the rotated elements using negative indexing
rotated_elements <- vector[-(1:rotate_by)]

# Concatenate the rotated elements with the elements from the beginning to the specified position
rotated_vector <- c(rotated_elements, vector[1:rotate_by])

# Print the rotated vector
print(rotated_vector)

Output

[3, 4, 5, 1, 2]

2 Rotate Items in Vector to the Right

In this example,

  1. Define a vector containing the elements you want to rotate.
  2. Specify the number of positions to rotate the items to the right.
  3. Extract the rotated elements using negative indexing from the specified position to the end of the vector.
  4. Concatenate the rotated elements with the elements from the beginning to the specified position.

R Program

# Define a vector containing elements
vector <- c(1, 2, 3, 4, 5)

# Specify the number of positions to rotate the items to the right
rotate_by <- 2

# Extract the rotated elements using negative indexing
rotated_elements <- vector[(length(vector) - rotate_by + 1):length(vector)]

# Concatenate the rotated elements with the elements from the beginning to the specified position
rotated_vector <- c(rotated_elements, vector[1:(length(vector) - rotate_by)])

# Print the rotated vector
print(rotated_vector)

Output

[4, 5, 1, 2, 3]

Summary

In this tutorial, we learned How to Rotate Items in a Vector in R language with well detailed examples.


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