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Hi Russ, > > Interesting, I've been interested in indexing in HDF5 for a while now, > > but > > I wouldn't necessarily have thought it would be needed for the NC4 work. > > Are > > you thinking about the "get the n'th object" calls in netCDF? > > I don't think we actually need it for the NC4 work, but if you were > going to do it anyway for other requirements, then we could make use > of it for ordering netCDF objects by creation sequence rather than > alphabetically by name. We are implementing a netCDF3/HDF5 library > without it. Well, we haven't really committed to it - mostly just given it some thought. > In my experience, netCDF users don't actually need a "get the n'th > object" call, but just a "get the next object" in the order in which > the objects were defined/created. And the reason for wanting to > preserve the order of creation is relatively minor, to have some > control over the order in which objects are presented in applications, > so that related objects are presented together. For example, an > ncdump output can be easier to understand if the file creator can > specify the order things appear by using their creation order. How are you planning on presenting the objects in the order they were created? Quincey