splitCSV to file

[bgobbi]

I am using splitCSV() to split a large CSV file chunks of 1000 lines each with headers.
I would like to pass each chunk as an input file to a following process.
Unfortunately splitCSV does not have the "file:" argument like splitFasta.

Is there a workaround?

[multimeric]

If you aren't actually using the values of the CSV in nextflow, you can just use splitText, which does have a file option.

splitCSV doesn't have a file parameter because it doesn't produce a file, it produces a channel filled with lists. If you can't use the above option because you are using the CSV contents within nextflow, you can do something like csvChannel.map { it.join(',') }.collectFile(name: "output_filename.csv"), which joins each list together into a string, then joins each row in the channel together into a file.