How to count the Number of Occurrences of Specific Element in the List in R - Step by Step Examples

How to count the Number of Occurrences of Specific Element in the List in R ?

Answer

To count the number of occurrences of a specific element in a vector in R, you can use the sum() function with logical comparison.


✐ Examples

1 Count Occurrences of Element in Vector

In this example,

  1. We create a vector named my_vector with elements.
  2. We use the sum() function with a logical comparison to count the occurrences of a specific element.
  3. The logical comparison returns TRUE for elements matching the condition and FALSE otherwise.
  4. The sum() function then adds up the TRUE values, effectively counting the occurrences.
  5. Finally, we print the count to the console.

R Program

my_vector <- c(1, 2, 3, 1, 4, 1, 5)
count <- sum(my_vector == 1)
print(paste("Count of 1 in the vector is:", count))

Output

Count of 1 in the vector is: 3

2 Count Occurrences of String in Vector

In this example,

  1. We create a vector named str_vector with string elements.
  2. We use the sum() function with a logical comparison to count the occurrences of a specific string.
  3. The logical comparison returns TRUE for elements matching the condition and FALSE otherwise.
  4. The sum() function then adds up the TRUE values, effectively counting the occurrences.
  5. Finally, we print the count to the console.

R Program

str_vector <- c("apple", "banana", "apple", "cherry", "apple")
count <- sum(str_vector == "apple")
print(paste("Count of 'apple' in the vector is:", count))

Output

Count of 'apple' in the vector is: 3

Summary

In this tutorial, we learned How to count the Number of Occurrences of Specific Element in the List in R language with well detailed examples.


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