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Appendix C C.3 The RExpression Actor To get started using R in Kepler, drag-and-drop the RExpression actor onto the Workflow canvas (Figure C.3). A search for "RExpression" in the Components tab will return all Rrelated actors. The RExpression actor is under the ‘General Purpose’ heading. Note that all R actors are represented by the same icon: a teal rectangle with a blue square/white R in the bottom left corner. Once the RExpression actor is on the Workflow canvas, it can be customized with additional ports and a user-defined R-script. Figure C.3: The RExpression actor.
