How to Remove Item at a Specific Index from a Vector in R

How to Remove Item at a Specific Index from a Vector in R ?

To remove an item at a specific index from a vector in R, you can use negative indexing or the setdiff function.

In this example,

We start by creating a vector named vec with some integer values.
We specify the index of the item we want to remove and store it in a variable named index_to_remove.
We use negative indexing to remove the item at the specified index. In R, using a negative index means excluding the element at that position.
We create a new vector vec_new that includes all elements of vec except the one at index_to_remove.
Finally, we print the new vector vec_new to see the result.

vec <- c(10, 20, 30, 40, 50)
index_to_remove <- 3
vec_new <- vec[-index_to_remove]
print(vec_new)

[1] 10 20 40 50

In this example,

We start by creating a vector named vec with some integer values.
We specify the index of the item we want to remove and store it in a variable named index_to_remove.
We use the setdiff function to remove the item at the specified index. The setdiff function returns the difference of two sets.
We create a new vector vec_new that includes all elements of vec except the one at index_to_remove by removing the value at that index.
Finally, we print the new vector vec_new to see the result.

vec <- c(10, 20, 30, 40, 50)
index_to_remove <- 3
vec_new <- setdiff(vec, vec[index_to_remove])
print(vec_new)

[1] 10 20 40 50

In this tutorial, we learned How to Remove Item at a Specific Index from a Vector in R language with well detailed examples.