How to find the Item with Maximum Number of Occurrences in a Vector in R

How to find the Item with Maximum Number of Occurrences in a Vector in R ?

Answer

To find the item with the maximum number of occurrences in a Vector in R, you can use the table function to count the occurrences of each item and then find the item with the maximum count.


✐ Examples

1 Find Item with Maximum Occurrences in a Character Vector

In this example,

  1. We create a character vector named vec with several elements.
  2. We use the table function to create a frequency table of the elements in the vector. The table function counts the occurrences of each unique element and returns an object of class table.
  3. We use the which.max function to find the element of the frequency table with the highest count. The which.max function returns the index of the first maximum value in a numeric vector.
  4. We extract the name of the item with the highest count from the frequency table using the index obtained from which.max.
  5. Finally, we print the item with the maximum number of occurrences to standard output.

R Program

vec <- c('apple', 'banana', 'apple', 'orange', 'banana', 'apple')

# Step 2: Create a frequency table
freq_table <- table(vec)

# Step 3: Find the item with the maximum occurrences
max_item <- names(which.max(freq_table))

# Step 4: Print the item
cat('Item with maximum occurrences:', max_item, '\n')

Output

Item with maximum occurrences: apple

2 Find Item with Maximum Occurrences in a Numeric Vector

In this example,

  1. We create a numeric vector named vec with several elements.
  2. We use the table function to create a frequency table of the elements in the vector. The table function counts the occurrences of each unique element and returns an object of class table.
  3. We use the which.max function to find the element of the frequency table with the highest count. The which.max function returns the index of the first maximum value in a numeric vector.
  4. We extract the name of the item with the highest count from the frequency table using the index obtained from which.max.
  5. Finally, we print the item with the maximum number of occurrences to standard output.

R Program

vec <- c(1, 2, 3, 1, 2, 1, 4, 1, 5, 1)

# Step 2: Create a frequency table
freq_table <- table(vec)

# Step 3: Find the item with the maximum occurrences
max_item <- names(which.max(freq_table))

# Step 4: Print the item
cat('Item with maximum occurrences:', max_item, '\n')

Output

Item with maximum occurrences: 1

Summary

In this tutorial, we learned How to find the Item with Maximum Number of Occurrences in a Vector in R language with well detailed examples.


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