The “nrow” Function in R

• Package: Base R (no specific package required)

• Purpose: Retrieves the number of rows in an array, matrix, or data frame.

• General Class: Data Manipulation

• Required Argument(s):

• An array, matrix, or data frame for which the number of rows is to be retrieved.

• Notable Optional Arguments:

• None

• Example:

• # Example data for using the nrow function
  matrix_example <- matrix(1:6, nrow = 2, ncol = 3)
  
  # Get the number of rows in the matrix
  num_rows <- nrow(matrix_example)
  
  # Display the result
  print(num_rows)

• In this example, the nrow function is used to retrieve the number of rows in a matrix (matrix_example). The resulting num_rows value is 2, as specified when creating the matrix. The nrow function is commonly used to determine the number of rows in matrices and data frames.