The “ncol” Function in R

• Package: Base R (no specific package required)

• Purpose: Retrieves the number of columns 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 columns is to be retrieved.

• Notable Optional Arguments:

• None

• Example:

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

• In this example, the ncol function is used to retrieve the number of columns in a matrix (matrix_example). The resulting num_cols value is 3, as specified when creating the matrix. The ncol function is commonly used to determine the number of columns in matrices and data frames.