R Node Problems on macOS for R version 3.5.3 with KNIME 3.7.1

[EPHUACH]

Hi,

Good day.
Does any one know how to install Rserve 1.8.6 in MacOS,
latest Rserve for macos is only with 1.7.3.1 ?
I having issue with the R3.5.3 and KNIME 3.7.1
where my R node show “R evaluation failed” at KNIME.

Error:
ERROR: Could not execute internal command.ERROR: R evaluation failed.: "sapply(ls(),function(a)class(get(a,envir=globalenv()))[1])"ERROR: R evaluation failed.: "sapply(ls(),function(a)class(get(a,envir=globalenv()))[1])"ERROR: eval failed

Regards,
Ed

[mlauber71]

There is a blog entry where I try to address this problem:

Install R alongside KNIME on Windows and MacOS

Over the last months I have collected a few entries about the installation of R alongside KNIME that contain some maybe useful hints how to overcome certain obstacles while installing them. I want to bring them together here. (If you are looking for a basic guide about how to install R in the first place you might look here or here). A few maybe unnecessary remarks upfront. Yes it takes some effort to get KNIME and R up and running but in the end you will be rewarded with the whole world of pos…

[EPHUACH]

Hi mlauber71,

Thanks for the update and info. It do help a lots to resolve this problem.
After read lots of post including the ref link you provided, here are the step i do to resolve this Rserve 1.8.6 issue on mac.

Here are my steps to Install Rserve1.8.6 in my mac:

1. Remove old clang, gfortran in my usr/local and usr/local/bin
2. Reinstall latest Xcode, clang and gfortran.
3. Check gcc and install, make sure all dependency install:
   • brew install gcc
     
     
4. Install macOS_SDK_headers_for_macOS_10.14.pkg
   
   
5. Make change on Makeconf file:
   • “/Library/Frameworks/R.framework/Resources/etc/Makeconf”
   • Change CXX = g++ instead of clang++
     
     
6. Re-install Rserve package again:
   • install.packages(‘Rserve’,“http://rforge.net/",type="source”)

Here is my Rserve with working R node in KNIME:

Cheers and have a good day,
Ed