How to Access Elements in a List in R


How to Access Elements in a List in R ?

Answer

To access elements in a list in R, you can use indexing or iterate over the list using loops.



✐ Examples

1 Access Elements Using Index

In this example,

  1. We create a vector named num_vector with numeric elements.
  2. We access elements by their index using square brackets and print them to standard output.

R Program

num_vector <- c(1, 2, 3, 4, 5)
element <- num_vector[3]  # Accessing element at index 3
print(paste("Element at index 3:", element))

Output

[1] "Element at index 3: 3"

2 Access Elements Using Loop

In this example,

  1. We create a vector named str_vector with string elements.
  2. We iterate over the vector using a for loop and print each element to standard output.

R Program

str_vector <- c("Apple", "Banana", "Cherry")
for (item in str_vector) {
  print(item)
}

Output

[1] "Apple"
[1] "Banana"
[1] "Cherry"

Summary

In this tutorial, we learned How to Access Elements in a List in R language with well detailed examples.




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