Filter by "NOT in Ontology"

[robsyc]

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New feature description. When using the general site-wide search tool, there is an option to filter based on ontology (checkbox), however, it would be very handy if one could filter based on which which ontologies NOT to include, namely NCIt and SNOMED in most cases.

Use cases Help find terms without being bombarded by the big thesauri / vocabularies NCIt and SNOMED

User communities People looking to work with OBO Foundry ontologies would have a much easier time.

Describe the solution you'd like The checkboxes in the filter screen could have three states: unchecked, checked and crossed-out.

Describe alternatives you've considered Alternatives include: changing your query, scrolling through search results for longer, check all boxes except for NCIt and SNOMED.

Additional context