use column combiner node to do several combination at the same time

KNIME Analytics Platform
1

Hi all!

I have a table. I'd like to combine its columns 3 by 3. I could use several "column combiner node" but I'm sure there is a way to do all these combinations at the same time.

I think, it can work with the column header and then a chunk loop start, but then I don't see how to send each 3 column headers to the column filter node.

An idea how to proceed?

Thanks

2

I think, that's the way to go. Instead of using the Column Filter use the Reference Column Filter with the column header to filter.

3

Is there a way to enforce inclusion with the column combiner node?

For each chunk the column headers change, but the node is looking for col0, col1 and col2...

4

I used the column aggragator node to enforce the inclusion