This archive contains answers to questions sent to Unidata support through mid-2025. Note that the archive is no longer being updated. We provide the archive for reference; many of the answers presented here remain technically correct, even if somewhat outdated. For the most up-to-date information on the use of NSF Unidata software and data services, please consult the Software Documentation first.
The new spec was created in collaboration with NCAR's Community Data Portal group. It adds new types of information for "enhanced catalogs" to facilitate interaction with search services and digital libraries.
Annotated specification is at:http://www.unidata.ucar.edu/projects/THREDDS/techNew/catalog/InvCatalogSpec.html
Tutorial (not complete) is at: http://www.unidata.ucar.edu/projects/THREDDS/techNew/catalog/Primer.html The new spec is based on XML Schema. The schema is at http://www.unidata.ucar.edu/schemas/thredds/InvCatalog.1.0.xsd Changes from version 0.6:http://www.unidata.ucar.edu/projects/THREDDS/techNew/catalog/Changes1.0.txt
Thanks for any comments on this spec.