Spotfire TERR text mining error: "name must be a single string"

Question

I am trying to create a script that does text mining (tm) combining property and action controls with TERR.

I have run my script successfully in open-source R but keep getting an error in TERR. I have narrowed down the function causing the error to VCorpus, part of the tm package. Here is the portion of the script causing errors:

myinput <- do.call(paste, c(as.list(col1), sep=" ")) 

Col1 is a document property (string) based on selection from property control drop down list.

b <- VCorpus(VectorSource(myinput), readerControl = list(language = 'eng'))

... and the error message I get in TERR is:

TIBCO Enterprise Runtime for R returned an error: 'Error in getS3method("pGetElem", class(x), TRUE) : 'name' must be a single string'.

Answer 1

Got a solution from Tibco developers community

Answer: You will not face this error if you use TERR 4.1.

There was a bug which got fixed in version 4.1

Reference :

https://docs.tibco.com/pub/enterprise-runtime-for-R/4.1.0/TIB_terr_4.1.0_relnotes.pdf

See below fix on page 16

TERR-6049 The getS3method function now works when the class argument is of

length greater than 1.

Answer 2

I am at this point too. I can do well using open R engine but in TERR I am trying to solve this error.

I am suspecting about the data format expected by TERR.