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Fingerprint SUBSET

StreamableVernalis Fingerprints extension for KNIME Workbench version 1.30.2.v202106181332 by Vernalis (R&D), UK

This node performs a logic SUBSET operation on a selected binary (bitvector) or count (bytevector) fingerprint column.

The start value is inclusive, i.e. the value is the first bit or byte included in the subset (0-indexed). The end value is the first bit or byte to be excluded. Use '-1' to retrieve to the end of the fingerprint.

If the start index is beyond the end of the fingerprint, a zero-length fingerprint is returned


Fingerprint '01100110'

Start = 3, End = -1 returns '00110'

Start = 0, End = 3 returns '011'

NB Binary fingerprints are rendered in bigendian format, and so index 0 is the right-most displayed bit, whilst for count fingerprints the counts are in increasing order of index

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


Select the fingerprint column
Select the incoming fingerprint column
Keep input columns
Keep the input fingerprint column in the output table?
The first index to be kept (0-indexed)
The first index to be lost, or -1 to run to the end of the fingerprint

Input Ports

Input table containing two fingerprint columns of the same type. Acceptable fingerprint formats are SparseBitVector, DenseBitVector, SparseByteVector, DenseByteVector.

Output Ports

Output table with subset fingerprints

Best Friends (Incoming)

Best Friends (Outgoing)


To use this node in KNIME, install Vernalis KNIME Nodes from the following update site:


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

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