How can I use an FME list in RCaller without getting an error?

Normally you can get around this special character issue in R using one of the solutions in this Stack Overflow post - using backticks `` and/or aes_string(). Or just using colnames() to rename the data frame column names and then referencing those.

However, I just ran a quick test and it appears our RCaller does not accept FME lists as input. They come in as NA values in this test workspace I created. I will check with our developers if this is true and report back.

rcaller-fme-lists.fmw

Hi @r5. I have looked into it a bit further. FME can access the list within the RCaller, but you have to enumerate all the possible list values, e.g. 

list{0}

list{1}

list{}

You could still run into issues with the 

{}

Does that help with your specific case? Would it be onerous to enumerate your list? Will it always be the same length? If you want to avoid managing the 

{}