Open In App

How to Remove Specific Elements from Vector in R?

Improve
Improve
Like Article
Like
Save
Share
Report

In this article, we will discuss how to remove specific elements from vectors in R Programming Language.

Remove elements using in operator

This operator will select specific elements and uses ! operator to exclude those elements.

Syntax:

vector[! vector %in% c(elements)]

In this example, we will be using the in operator to remove the elements in the given vector in the R programming language.

R




# create a vector
vector1=c(1,34,56,2,45,67,89,22,21,38)
 
# display
print(vector1)
 
# remove the elements
print(vector1[! vector1%in% c(34,45,67)])


Output:

[1]  1 34 56  2 45 67 89 22 21 38

[1]  1 56  2 89 22 21 38

Note: We can also specify the range of elements to be removed.

Syntax:

vector[! vector %in% c(start:stop)]

R




# create a vector
vector1 = c(1, 34, 56, 2, 45, 67, 89, 22, 21, 38)
 
# display
print(vector1)
 
# remove the elements
print(vector1[! vector1 %in% c(1:50)])


Output:

[1]  1 34 56  2 45 67 89 22 21 38

[1] 56 67 89

Using conditions to remove the elements

In this method, the user needs to use the specific conditions accordingly to remove the elements from a given vector.

Syntax:

vector[!condition]

where

condition: specifies the condition that element be checked

R




# create a vector
vector1=c(1,34,56,2,45,67,89,22,21,38)
 
# display
print(vector1)
 
# remove the elements with element greater
# than 50 or less than 20
print(vector1[!(vector1 > 50 | vector1 < 20)])


Output:

[1]  1 34 56  2 45 67 89 22 21 38

[1] 34 45 22 21 38

Remove element from vector by index

To remove elements from a vector by index in R, we can use negative indexing or the subsetting technique. Here’s an example.

R




# Create a vector
vector1 <- c(1, 34, 56, 2, 45, 67, 89, 22, 21, 38)
 
# Display the original vector
print("Original Vector:")
print(vector1)
 
# Remove elements by index
vector1 <- vector1[-c(3,5)]
 
# Display the modified vector
print("Modified Vector:")
print(vector1)


Output:

[1] "Original Vector:"
[1] 1 34 56 2 45 67 89 22 21 38

[1] "Modified Vector:"
[1] 1 34 2 67 89 22 21 38


Last Updated : 11 Mar, 2024
Like Article
Save Article
Previous
Next
Share your thoughts in the comments
Similar Reads