R Snippet parsing error

KNIME Extensions
1

Hi all,

I ve installed R correctly. Rserve runs. It worked with 3.7. Updated to 4.1.
Now I get this error:

ERROR R Snippet 0:15 Execute failed: Failed to parse the script:
Syntax error: Error in parse(text = knime.script.in) :
unused argument (text = knime.script.in)

seems to be anywhere in the connection part. Any ideas how to fix?

Thanks

Laermbote

2

Which version of R are you using? Which OS?

Is this a sample workflow you can share?

3

Hi Jeff,

thanks for reply. R 3.6.1
Here a minal example.

Karsten

data.txt (364.5 KB)
R Simple.knwf (8.3 KB)

4

I will take a look at this tomorrow, January 2nd, as today was a holiday.

Is this Mac, Windows or Linux?

Helps me focus and document any steps for the correct os.

5

After looking at the workflow I have two responses.

  1. Looks like you are using the “R Scripting” nodes from the community category in the node repository. KNIME would suggest using the R nodes written and maintained by KNIME, under Scripting->R
    image
    I was able to use the R snippet node without any issues.
  2. If you need this to work as is, with the community nodes, then there are steps you can take. I opened my R shell and ran the following commands
    library(Rserve); Rserve(args = “–vanilla”)

Looking at the “R Scripting” plugin, it went from v3.3 to v4.0 with the change of KNIME 3.7 to 4.1. Not sure what changed.

3 Likes
6

Hi Jeff,
works perfectly now. Thanks for the great support!
Karsten

3 Likes