Loop over a group of data identified by a group key

KNIME Analytics Platform
1

Hello,

my Data looks for example like this:

Column1 Column2 Groupkey Column4
<Testdata> <Testdata> 1 <Testdata>
<Testdata> <Testdata> 1 <Testdata>
<Testdata> <Testdata> 1 <Testdata>
<Testdata> <Testdata> 2 <Testdata>
<Testdata> <Testdata> 2 <Testdata>

 

My Problem:

I want to create a workflow where only the testdata within a group is processed. All groups have to go through the workflow but only one group at a time.

I am using knime for a few months now but I am not capable of solving this problem.

Please help :)

Any ideas?

2

The "Group Loop Start" node is your friend. :-)

-E

1 Like
3

Thank you :)

Totally obvious but i did not find the node.

4

For (relative) newcomers there's a lot of nodes to try out for such things, so it's very normal that you didn't find it. Good thing that most nodes are quite "unforgettable" afterwards as well. :-)

-E

1 Like