The “h2o.levels” Function in R

• Package: h2o

• Purpose: To retrieve the levels of a categorical column in an H2O data frame.

• General Class: Data Retrieval

• Required Argument(s):

• x: H2OFrame. The H2O data frame containing the categorical column.

• i: Character. The name or index of the categorical column for which levels are retrieved.

• Notable Optional Arguments:

• None

• Example (with Explanation):

• # Load necessary package
  library(h2o)
  
  # Initialize H2O
  h2o.init()
  
  # Load a sample dataset
  data <- h2o.importFile("https://s3.amazonaws.com/h2o-public-test-data/smalldata/iris/iris_wheader.csv")
  
  # Get levels of the 'class' column
  levels <- h2o.levels(data, "class")
  
  # Print the levels
  print(levels)

• In this example, the h2o.levels function from the h2o package is used to retrieve the levels of the “class” column in the iris dataset loaded into an H2O data frame. The retrieved levels are then printed.