I am doing some fancy assay plate processing trickery in knime 2.7.4, but ran into a looping issue.
I loop over the data per plate with a Group Loop Start, then do some magic that includes some math, pivoting and transpose, a variable is edited to form the filename of the resulting csv file (for each plate) and this is stored using the CSV_Writer, after wich the loop ends with a Variable Loop End (connected to the CSV_Writer, as that is its only output port).
So far so good.
But for each plate i also gather some statistical information, one row for each plate/itteration, and i would like to bundle this together, at this time in a separate file.
I thought to do that by connecting a normal Loop End node to concatenate those, but that gives all types of weirdness if you connect 2 loop ends.
I now solved it for now by writing out the statistical information within the loop using the CSV_Writer in append mode, but this makes me a little uncomfortable, and it has the drawback that if i reset the loop and run it again, the statistical data is duplicated in the output file.
If i ever wanted to use both datasets for further processing in this workflow, would there be a way to get them both out from the one loop ?