List To Set

This nodes converts any List collection cells in selected columns to Set collection cells. List collections have a defined order, and may contain duplicates. Sets do not necessarily have a defined order, but may not contain duplicates.

This node was developed by Vernalis Research (Cambridge, UK) . For feedback and more information, please contact knime@vernalis.com

Options

Select List Columns
Select the incoming List column(s) to convert to sets
Sort Set Members
If this option is checked, then the cells will be sorted in ascending order of their comparator, otherwise they will be in order of first occurrence in the list
Fail if no matching columns
Should the node execution fail if there are no matching collection columns?

Input Ports

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Incoming data table

Output Ports

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The input table with collections converted from Lists to Sets

Popular Predecessors

  • Column Expressions20 %
  • Column Filter7 %
  • Collection Size7 %
  • Cell Splitter6 %
  • Create Collection Column6 %
  • GroupBy5 %
  • Column Aggregator5 %
  • Molecular Properties5 %
  • Table Reader5 %
  • Variable to Table Row5 %
  • JSON Path4 %
  • String Manipulation3 %
  • Reference Row Filter3 %
  • Table Manipulator3 %
  • Insert into List2 %
  • Set To List2 %
  • Loop End2 %
  • Category To Number2 %
  • Row Splitter1 %
  • Collection to String1 %
  • Pivoting1 %
  • Rule Engine1 %
  • Association Rule Learner (Borgelt)1 %
  • JSON to Table1 %
  • Regex Extractor1 %

Popular Successors

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Workflows

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Developers

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Installation

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

v5.12
Plugin provider: Vernalis Research, UK
Plugin version: 1.38.2.v202605270913
On NodePit since: 2026-07-06
Last update: 2026-07-21
Tags: Streamable
KNIME versions: v5.12, v5.11, v5.10, v5.9, v5.8, v5.7, v5.6, v5.5, v5.4, v5.3, v5.2, v5.1, v4.7, v4.6, v4.5, v4.4, v4.3, v4.2, v4.1, v4.0, v3.7

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