The “rownames” Function in R

• Package: Base R (no specific package required)

• Purpose: Gets or sets the row names of matrices or data frames.

• General Class: Data Manipulation

• Required Argument(s):

• A matrix or data frame for which row names are to be retrieved or set.

• Notable Optional Arguments:

• value: If specified, sets the row names of the matrix or data frame to the specified values.

• Example:

• # Example data for using the rownames function
  matrix_example <- matrix(1:6, nrow = 2, ncol = 3)
  
  # Set row names for a matrix
  rownames(matrix_example) <- c("Row1", "Row2")
  
  # Get row names of the matrix
  row_names <- rownames(matrix_example)
  
  # Display the result
  print(row_names)

• In this example, the rownames function is used to set row names for a matrix (matrix_example) and then retrieve those row names. The resulting row_names vector contains the names “Row1” and “Row2.” The rownames function is specific to matrices and data frames, allowing for the manipulation of row names in these structures.