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In the web page:http://my.unidata.ucar.edu/content/software/netcdf/netcdf-4/index.html
there is one item under 'New Features for HDF5', 'Explicit support forcoordinate variables/axes'. Item 2 below is a refinement of that bullet.
The other 3 can be added. Consider these bullets a proposal, subject to discussion. When we get consensus on these, we'll set some firm milestones. 1. Update and correct the HDF5 specification document.2. A dimension scales API sufficient to support coordinate variables/axes.
See the proposal <http://hdf.ncsa.uiuc.edu/apps/netcdfh5/h5shared_dims.html> for an initial idea. We need to review and gain consensus on the design, and then implement it.3. An index object that permits specifying an order for iterating over
a set of objects, and perhaps also permits efficient insertion into and deletion from the ordered set it indexes. 4. MPI-IO enhancements to improve performance, as suggested by the Northwestern/Argonne work. -- Robert E. McGrath (HDF Java Team Leader) National Center for Supercomputing Applications University of Illinois, Urbana-Champaign Champaign, Illinois 61820 (217)-333-6549 mcgrath@xxxxxxxxxxxxx