Ian, After reviewing the examples (compound, compound_attribute and commit) I agree the examples are incorrect because the data is saved in a non-hdf-expected format. I will rewrite the examples, so that normal hdf5 tools and other applications can correctly read the data in a hdf5-expected format.
The object library used by HDFView actually writes the data by fields. Allen On Tuesday, August 25, 2015 06:34:01 PM Ian Camerlin wrote: > Elena, > > Thanks for the reply! Explains a lot of my frustration! If it helps your > development team at all, I determined I can bypass this bug by using the > same non-native data types for both the memory and file data types. Is that > a valid work around or could this potentially be damaging to my data? My > coworker and I hypothesized that it might be that Java is bypassing the > native datatypes all together. I was interested by this issue and I'd love > to here any more detailed understanding, if you guys have any. Obviously, I > understand if your a little busy to explain, thanks for the info! > > -Ian > > On Mon, Aug 24, 2015 at 6:35 PM, Elena Pourmal <[email protected]> > wrote: Hi Ian, > > This is a known bug (for reference, it is JAVA-1911). We are looking into > it. > > Elena > ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ > Elena Pourmal The HDF Group http://hdfgroup.org > 1800 So. Oak St., Suite 203, Champaign IL 61820 > 217.531.6112 > ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ > > > > > On Aug 20, 2015, at 11:59 AM, Ian Camerlin <[email protected]> wrote: > > I was looking at the Java API examples for reading and writing > compound data types. > I ran the example and then tried to look at the resulting .h5 file in > HDFView. The results are "garbage." The structure of the data is there > however the values are definitely not what the example specified. I > had a hunch that this was a memory issue, that the filetype memory of, > say, an integer which is H5T_STD_I32BE might not be correct for my > machine, though I'm not completely sure how that works. > > Would anyone be able to explain why this might be happening? Is there > something I'm missing about writting HDF5 out in Java? > > Attached is the code and a screen shot of my HDFView of the resulting file. > <HDF_view_example.png><H5Ex_T_Compound.java>________________________________ > _______________ Hdf-forum is for HDF software users discussion. > [email protected] > http://lists.hdfgroup.org/mailman/listinfo/hdf-forum_lists.hdfgroup.org > Twitter: https://twitter.com/hdf5 > > > _______________________________________________ > Hdf-forum is for HDF software users discussion. > [email protected] > http://lists.hdfgroup.org/mailman/listinfo/hdf-forum_lists.hdfgroup.org > Twitter: https://twitter.com/hdf5 _______________________________________________ Hdf-forum is for HDF software users discussion. [email protected] http://lists.hdfgroup.org/mailman/listinfo/hdf-forum_lists.hdfgroup.org Twitter: https://twitter.com/hdf5
