Hi Johannes, As with other variable type data references cannot be compressed since internally they are stored in the heaps while dataset itself stores pointers to the data in a file. If size is a problem, you may come up with your own set of indices stored in a dataset (for example, reference to a hyperslab can be stored as 2 n-dim vectors of corner coordinates, or something like this) and use compression.
Elena On Apr 20, 2010, at 2:25 AM, Stamminger, Johannes wrote: > Hi, > > just a question related to this topic concerning the filesize: last week > I played around with refernces a little bit. I created a dataset of > 1-dim packet table of references. With 1,1 Mio references to hyperslab > regions of other packet tables within the same file. And this increased > the hdf file size dramatically. Seems to me as if compression does not > work (well) for such refs ... or would you expect different result and I > missed something there? > > Best regards, > Johannes Stamminger > _______________________________________________ > Hdf-forum is for HDF software users discussion. > Hdf-forum@hdfgroup.org > http://mail.hdfgroup.org/mailman/listinfo/hdf-forum_hdfgroup.org _______________________________________________ Hdf-forum is for HDF software users discussion. Hdf-forum@hdfgroup.org http://mail.hdfgroup.org/mailman/listinfo/hdf-forum_hdfgroup.org
