Where do the results of R-Scripts go? Configuration problem for RapidMiner Studio only?

MPB_MPB_ Member Posts: 45 Guru
edited March 2020 in Help
Hi there,

I am struggling with exporting results from the Execute R Script Operator.

Here is how the script and the process look like :

After the process is successfully done, I only get The result
Memory buffered file

However, there is no file written.

The RapidMiner log only says

INFO: No filename given for result file, using stdout for logging results!
Mar 04, 2020 10:36:58 AM com.rapidminer.Process execute
INFO: Process //Aggr/R_test starts
Mar 04, 2020 10:36:58 AM com.rapidminer.Process saveResults
INFO: Saving results.
Mar 04, 2020 10:36:58 AM com.rapidminer.Process execute
INFO: Process //Aggr/R_test finished successfully after 0 s

Since the code is running without any errors and with the expected results in R-Studio, I think it must be a configuration issue

What did I do wrong?

Best Answer


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    varunm1varunm1 Moderator, Member Posts: 1,207 Unicorn

    So, you can view your model summary in "Log" window of rapidminer (VIEW --> Show Panel --> Log). The output of R script when connected to result port will only display example sets and others like models will be displayed as memory buffer files. I think you should use a return function if you are planning to output a data frame.

    @yyhuang can help you more with this.


    Be Safe. Follow precautions and Maintain Social Distancing

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    MPB_MPB_ Member Posts: 45 Guru
    Hi @varunm1 ,

    thank you very much for your reaction.

    In this case, I explicitly want to write a new file. I do not need to see any results in RapidMiner, but a .txt-File written into a directory on my computer would be amazing.
    Unfortunately, a return function is not doing the job,
    @yyhuang gave me the very great advice to use a sink function.
    The sink function works perfectly fine in R(studio) and writes a new file,  but does not in RapidMiner. 

  • Options
    MPB_MPB_ Member Posts: 45 Guru
    Hi @yyhuang ,

    thank you so much for your help and your patience.
    Simply adding the directory in the sink function did the Job.
    You made my Day! Thank you again :)
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    yyhuangyyhuang Administrator, Employee, RapidMiner Certified Analyst, RapidMiner Certified Expert, Member Posts: 364 RM Data Scientist
    Glad to know it works for you! Thank you @MPB_ again for sharing the use case and feedback. 
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