That is actually a pretty good question. What I found was that @stoeter wrote an entry about such a connection:
He references this page but mentioned it could be tricky:
And that was some time ago. From what I understand these components would be necessary:
- Prepare the server with some sort of .sh script to accept commands for the command line (I might be wrong about that)
- use the Rserve package (on the R Server) but tell it to accept remote connections like (–vanilla --RS-enable-remote)
These are just some quick ideas. Maybe someone from KNIME might know more. I have used R and KNIME from a local installation only.
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