How to check if a Vector contains all the items of Another Vector in R - Step by Step Examples

How to check if a Vector contains all the items of Another Vector in R ?

Answer

To check if a vector contains all the items of another vector in R, you can use the all function combined with the %in% operator.

✐ Examples

1 Check if All Elements of an Integer Vector are in Another Vector

In this example,

We create a vector named vector1 with a set of numerical values.
We create another vector named vector2 with a different set of numerical values.
We use the all function combined with the %in% operator to check if all elements of vector2 are present in vector1. The %in% operator returns a logical vector indicating if there is a match or not for its left operand in its right operand.
The all function checks if all values in the logical vector are TRUE. If all elements of vector2 are in vector1, it returns TRUE; otherwise, it returns FALSE.
Finally, we print the result to standard output using the print function.

R Program

vector1 <- c(1, 2, 3, 4, 5)
vector2 <- c(2, 3, 4)
result <- all(vector2 %in% vector1)
print(result)

Output

TRUE

2 Check if All Elements of a String Vector are in the First Vector

In this example,

We create a vector named main_vector with a series of character strings.
We create another vector named sub_vector with a subset of character strings.
We use the all function combined with the %in% operator to check if all elements of sub_vector are present in main_vector. The %in% operator returns a logical vector indicating the presence of each element of sub_vector in main_vector.
The all function checks if every value in this logical vector is TRUE. If all elements of sub_vector exist in main_vector, it will return TRUE. Otherwise, it will return FALSE.
Finally, we print the result using the print function.

R Program

main_vector <- c("apple", "banana", "cherry", "date", "fig")
sub_vector <- c("banana", "cherry", "date")
result <- all(sub_vector %in% main_vector)
print(result)

Output

TRUE

3 Check if All Elements of a Subset Vector are in the Main Vector

In this example,

We create a vector named primary_vector with a list of mixed data types including numbers and strings.
We create another vector named secondary_vector with some elements that are not present in primary_vector.
We use the all function combined with the %in% operator to check if all elements of secondary_vector are present in primary_vector. The %in% operator returns a logical vector for each element of secondary_vector indicating if it is found in primary_vector.
The all function checks this logical vector to see if all values are TRUE. Since not all elements of secondary_vector are in primary_vector, it returns FALSE.
Finally, we print the result using the print function.

R Program

primary_vector <- c(10, 20, 30, "apple", "banana")
secondary_vector <- c(20, "banana", "cherry")
result <- all(secondary_vector %in% primary_vector)
print(result)

Output

FALSE

Summary

In this tutorial, we learned How to check if a Vector contains all the items of Another Vector in R language with well detailed examples.

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How to check if a Vector contains all the items of Another Vector in R - Step by Step Examples

How to check if a Vector contains all the items of Another Vector in R ?

Answer

✐ Examples

1 Check if All Elements of an Integer Vector are in Another Vector

R Program

Output

2 Check if All Elements of a String Vector are in the First Vector

R Program

Output

3 Check if All Elements of a Subset Vector are in the Main Vector

R Program

Output

Summary

More R Vectors Tutorials