Using R functions
Now that we have successfully connected Tableau with R, let's write some code in Tableau to invoke R. Within Tableau, open the Calculated Field Editor. Notice within the functions panel those entries beginning with
SCRIPT_, as shown in the following image:
SCRIPT functions are used by Tableau to invoke R. The function names communicate the data type of the returned results:
SCRIPT_REAL returns float values,
SCRIPT_BOOL returns T|F values, and so on.
The syntax of a
SCRIPT function is represented in the following diagram: