"Description missing when running Execute R [SOLVED]"

gunnerli90

I tried to use Execute R to run one of the tutorials-Reading an example set from a file using R. But when I clicked the triangle sign, it pops up an error "Description missing". I am using Windows 8.1 64 bits and I have installed packages "rJava" and "data.table" in my R. I do not know how to configure my R in Rapidminer. Please tell me how to solve this problem.

Marco_Boeck

Hi,

can you please post the content of the log as well as your process XML?
With the R Scripting extension the only thing you'd normally have to do is click on the operator and then follow the instructions in the Parameters view to initialize the R connection.

Regards,
Marco

gunnerli90

Hi, Marco! I did not see anywhere to set parameters and connect to R after installing Execute R. Below is the log:

2015年8月11日6:39:19点INFO: No filename given for result file, using stdout for logging results!
2015年8月11日6:39:19点INFO: Loading initial data.
2015年8月11日6:39:19点INFO: Process starts
2015年8月11日6:39:19点SEVERE: Process failed: No message.
2015年8月11日6:39:19点SEVERE: Here:
2015年8月11日6:39:19点SEVERE: Process[1] (Process)
2015年8月11日6:39:19点SEVERE: subprocess 'Main Process'
2015年8月11日6:39:19点SEVERE: +- Retrieve Golf[1] (Retrieve)
2015年8月11日6:39:19点SEVERE: ==> +- Execute R[1] (Execute R)
2015年8月11日6:39:19点SEVERE: +- Execute R (2)[0] (Execute R)

And the xml:

<宏/ >

Fetch example data



Save example data in a csv file and hand the file over to the next R operator



Read data from the given file and return a part of the data

Marco_Boeck

Hi,

that the error message is missing is a bug
But the good news is, you just need to init the connection to R like so:



Regards,
Marco

gunnerli90

Thanks Marco! But I do not know the path to R executable because I cannot find the "Rscript.exe". Generally, where does this executable file locate in?

MartinLiebig

Hi,

mine is located at
C:\Program Files\R\R-3.2.0\bin\Rscript.exe
Windows 8.1

Regards,
Martin

gunnerli90

I found the Rscript.exe file but when I clicked the "test" button, it came out another error "'D:/Program' is not recognized as an internal or external command, operable program or batch file". My path is\Program Files\R\R-3.1.1\bin\Rscript.exe

Marco_Boeck

Hi,

what OS are you using? I cannot reproduce the problem on the Windows machines here, but I think I know what you can do to fix it: Add a quote before and after the path, so that it says

"D:\Program Files\R\R-3.1.1\bin\Rscript.exe"

in the preferences.

Regards,
Marco

gunnerli90

I am using Windows 8.1 64-bit. I added quotes to my path but the result was still the same. Should I reinstall my R in C drive?

gunnerli90

Finally, I solved the problem. For 64-bit OS, I need to use the Rscript.exe file in "x64" folder (there are two Rscript.exe files in "bin"). Anyway, thank you, Marco!