Variable Condition Loop End

In combination with a Generic Loop Start node, this node lets you execute the body of the loop until a certain condition on one of the flow variables is met. In the dialog you can choose one of the available flow variables and which condition should cause the loop to finish.

You can add more input and ouput tables using the “…” menu.

Options

Available variables: In the list you can select one of the available flow variables. Below the list, you can choose, when the loop's execution should be finished, i.e. when the selected variable is, equal, greater, greater or equal, smaller, or smaller or equal than the given value. For string and boolean variables only the check for equality is possible.
Collect rows from last iteration: The default is to collect the rows from all the loop's iterations, including the last one after which the loop is stopped. If you de-select this option, the rows from the last iteration are not added to this output table.
Collect rows from last iteration only: If only the rows from the very last iteration should be collected in this table, you have to enable this option.
Add iteration column: Allows you to add a column containing the iteration number to this output table.
Propagate modified loop variables: If checked, variables whose values are modified within the loop are exported by this node. These variables must be declared outside the loop, i.e. injected into the loop from a side-branch or be available upstream of the corresponding loop start node. For the latter, any modification of a variable is passed back to the start node in subsequent iterations (e.g. moving sum calculation). Note that variables defined by the loop start node itself are excluded as these usually represent loop controls (e.g. “currentIteration”).

Input Ports

: Any datatable
…: Any datatable

Output Ports

: Collected results from the loop body
: The selected flow variable's values in each iteration
…: Collected results from the loop body

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Installation

To use this node in KNIME, install the extension KNIME Base nodes from the below update site following our NodePit Product and Node Installation Guide:

v5.2

A zipped version of the software site can be downloaded here.

Plugin provider: KNIME AG, Zurich, Switzerland

Plugin version: 5.2.2.v202403061155

On NodePit since: 2023-12-06

Last update: 2024-04-26

KNIME versions: Since v4.5

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