I have a problem with a data function, it's a pretty simple R script: a <- b where b is marked rows in specific table. The problem is that this function is on "refresh automatically" and when there isn't anything selected, it throw an error.

[Bastien Groot]

So I tried this:

if (!is.null(b)) {

a <- b

} else {

a <- NULL

}

but this doesn't work either, how can I make this error disappear?

[Gaia Paolini]

it works for me. I am using Spofire 12.5, I assume a and b are data tables, and b is limited by marking?

Can you share the error?

[Bastien Groot]

The error I get is this:

TIBCO Enterprise Runtime for R returned an error

The data function 'triggerOnMarking' could not be executed.

Error in withCallingHandlers({

  if (!is.null(b)) {

    a <- b

 : object 'b' not found

  eval(script, envir = .GlobalEnv)

  eval(script, envir = .GlobalEnv)

  withCallingHandlers({

I forgot to mention: b is actually a string, because I only get one cell (the first marked) that I need.

[Gaia Paolini]

I am not sure how you can only get a cell in. Are you marking a data table? Normally I mark an entire row then choose the column I want.

Maybe can you show a screen shot of how this data function is set up?

[Bastien Groot]

I have this in input (it shows a but it's b, sorry for the confusion)

[Bastien Groot]

nvm, I found what was my mistake, it came from something completely different. Sorry for that, and thanks for helping me