CGNS lacks a way to store the bounding box of a grid compared to other existing file format.
See attached files for the whole proposal.
HDF is introducing Querying and Indexing into HDF5, and this CPEX seems like an excellent start to introducing quick querying into CGNS. I've attached the RFC of the feature, and we would like your feedback on how useful it would be for this functionality, and possibly extending it pass what you are suggesting. For example, we could quickly return the entire mesh that corresponded to the bounding box. We would, in general, be interested in other use cases you might have that would make this feature useful in CGNS.
Implemented in develop branch