The Vernalis Collection Size node has been updated with new options shown below:
The new options allow the inclusion or exclusion of Missing Values within the collections, and also the option to only count unique values. Existing nodes will acquire the new options in a backwards-compatible manner - i.e. the options will be available to those nodes, but the existing behaviour (which is also the new default) will be preserved.
The new version, which is release in v1.36.6 of our community contribution is now available in all stable release channels from KNIME 4.7 onwards, along with the nightly build.
Thanks to @mwiegand for suggesting this useful feature (see [Vernalis: Collection Size - Add Option to ignore missing](Vernalis: Collection Size - Add Option to ignore missing for details)
Steve