jamovi

Posted: **Sat Jul 27, 2024 10:12 am**

Hi there!

I am trying to compute a new variable 'combo', which is a combination of two existing variables (Participant, ID).

I can do this easily with the Compute menu with a formula (= Participant + "-" + ID) and it works perfectly. I can see the new variable 'combo' in the Jamovi spreadsheet.

Imagine now I want to do the same but this time using the Rj editor. I can calculate a new variable 'combo2' with the 'paste' function:

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data$combo2 <- paste(data$Participant, data$ID, sep = "-")

I can see that the newly computed variable 'combo2' has been created when I ask for a summary of the variable:

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summary(data$combo2)

Length Class Mode
7319 character character

The problem is that the new computed variable 'combo2' does not show up in the Jamovi spreadsheet!! I have tried several things to see 'combo2' in the spreadsheet but Jamovi always reports an errror. I have tried these lines of code (one at a time) but I get an error message of the type 'update is not an exported object from namespace:jmv' or 'fromDataFrame is not an exported object from namespace:jmv' and similar.

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jmv::update(data)

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jmv::fromDataFrame(data)

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jmvcore::toDataFrame(data)

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jmvcore::setData(data)

The problem (not visualising in the spreadsheet a newly computed variable via Rj editor) seems silly but I cannot figure out how to solve it. Please help!! Thanks. Cristóbal

Posted: **Sat Jul 27, 2024 1:26 pm**

You need to opt to use Rj+ (within Rj). Then you need to select the Participant and ID variables (using the gui). Then run your R code.

Posted: **Sat Jul 27, 2024 1:38 pm**

It works now!!
Thank you so much, reason180.
I can see now that one of the differences between the Rj Editor and the Rj Editor+ is that in the latter you need to move the variables to the right in the GUI for them to be considered by the function at hand, right?

Posted: **Sat Jul 27, 2024 1:49 pm**

Yes, that's correct.

jamovi

Computing new variable with Rj editor and seeing it in the spreadsheet

Computing new variable with Rj editor and seeing it in the spreadsheet

Re: Computing new variable with Rj editor and seeing it in the spreadsheet

Re: Computing new variable with Rj editor and seeing it in the spreadsheet

Re: Computing new variable with Rj editor and seeing it in the spreadsheet