The “unique” Function in R

• Package: Base R (No specific package)

• Purpose: To extract unique elements from a vector, data frame, or other structures.

• General Class: Data Manipulation

• Required Argument(s):

• x: The input vector, data frame, or other structure from which unique elements are to be extracted.

• Notable Optional Arguments:

• incomparables: A vector of values that should be treated as incomparable when identifying unique elements.

• Example:

• # Example usage with a vector
  my_vector <- c(1, 2, 3, 1, 2, 4, 5)
  unique_values <- unique(my_vector)
  
  print(unique_values)
  
  # Example usage with a data frame
  my_data_frame <- data.frame(
  Name = c("John", "Jane", "Bob", "John", "Alice"),
  Age = c(25, 30, 22, 25, 28)
  )
  
  unique_rows <- unique(my_data_frame)
  
  print(unique_rows)

• In this example, unique is a built-in function in base R, and it can be used to find unique elements from vectors or rows in a data frame. The incomparables argument is optional and allows you to specify values that should be treated as incomparable when identifying unique elements.