R is a popular open-source environment for statistical analysis. Tableau Desktop can now connect to R through calculated fields and take advantage of R functions, libraries, and packages, and even the saved models. These calculations dynamically invoke the R engine and pass values to R via the reserve package, and they are then returned to Tableau.
Tableau Server can be configured to connect to an instance of Rserve through the tabadmin utility, allowing anyone to view a dashboard containing the R functionality.
Combining R with Tableau gives one the ability to bring deep statistical analysis into the drag-and-drop visual analytics.