Knime R issue

[mlauber71]

Could you provide us with some additional informations? Especially Version of R, operating system. The latest version of KNIME is 3.7 and R is 3.5.2.

Please note:

• you will need RServe 1.8.6 or larger in order for KNIME to work properly (below you find a few links about R and KNIME)
• do you use data.table or data.frame for data transfer between KNIME and R? Do you note any difference?

Or could you provide a sample workflow where this happens so we might check if we could see something.

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Install R

Importing R Code in Knime

There are two basic possibilities to use R with KNIME you have a R version on your computer and you point KNIME to it (“KNIME Interactive R Statistics Integration”) KNIME provides you with an ‘integrated’ R package that sits somewhere deep in the KNIME folders (“KNIME R Statistics Integration (Windows Binaries)”) I would advise to use the first option. So first to proper install R (and maybe RStudio to have an easier handling) and then point KNIME to it. There are further R integrations but t…

R 3.5 - macOSX problems

R Problems on macOS (high sierra) since R version 3.5

I am experiencing a strange problem with R Snippets in KNIME 3.5.3 on a macOS (high sierra 10.13.4 (17E202)) system since switching to the newest R version 3.5. It seems to be there with every R Snippet I use that generates an output table, the system is not able to get back knime.out parameters and throws strange error messages. The first part using R does work so there does not seem to be a general R problem. Well yes I tried to reinstall R, I made sure I have RServe and Cairo up and running …

RServe compilation

KNIME : R evaluation failed.

And another thing. If you have to use the newest version of RServe you will have to compile the package. On MacOS you will need the packages mentioned on the relevant R website: https://cran.r-project.org/bin/macosx/ On a windows system you will have to compile the package with the help of RTools https://cran.r-project.org/bin/windows/base/rw-FAQ.html#Can-I-install-packages-into-libraries-in-this-version_003f I recently noted that at least when compiling the RServe package Rtools does not li…

Issue with KNIME R version

I mean the up to three KNIME extensions about R as mentioned before. I would deinstall them an install them again. Maybe first only using the “R Scripting extension” [image] From my experience the most important thing is to update RServe to the latest version (1.8-6). You will have to compile the package yourself (depending on your platform) since there is no binary version ready for download (yet). http://www.rforge.net/Rserve/files/ [image] Download the .tar file and use it to install …