6.2.1 Arguments for Functions that Run Scripts

The Oracle Machine Learning for R embedded R execution functions ore.doEval, ore.tableApply, ore.groupApply, ore.rowApply, and ore.indexApply have arguments that are common to some or all of the functions.

Some of the functions also have an argument that is unique to the function. The following topics describe these arguments:

• Input Function to Execute
  The embedded R execution functions all require an R function to apply during the execution of the script.
• Optional and Control Arguments
  All of the embedded R execution functions take optional arguments, which can be named or not.
• Structure of Return Value
  Another argument that applies to all of the embedded R execution functions is FUN.VALUE.
• Input Data
  The ore.doEval and ore.indexApply functions do not automatically receive any data from the database.
• Parallel Execution
  The parallel argument specifies the degree of parallelism to use in the embedded R execution of the input function.
• Unique Arguments
  The ore.groupApply, ore.indexApply, and ore.rowApply functions each take an argument that is unique to the function.

See Also:

• For function signatures and more details about function arguments, see the online help displayed by invoking help(ore.doEval)

• For examples of the use of the arguments, see Using the ore.doEval Function and the other topics on using the embedded R execution functions