HDF Newsletter #111



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                              Newsletter #111
                               March 5, 2010


  . Release of HDF Java Products 2.6.1

     - Platforms Tested
     - Major Improvements
     - Major Bug Fixes

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Release of HDF Java Products 2.6.1

We are pleased to announce the release of HDF Java Products 2.6.1, built
and tested using JDK 1.6.x with HDF 4.2.5 and HDF5-1.8.4 Patch 1 (with
the HDF5 1.6 compatibility flag).

The HDF Java Products web page is located here:


This release can be obtained from the HDF Java Products web page, as well
as the HDF Downloads page at:


HDF Java Products 2.6.1 includes bug fixes, new features, a test suite, and
improved documentation.

For more information about this release, see:


Platforms Tested

This release was built and tested for the following platforms:

   32-bit distribution -- runs on 32-bit systems or 64-bit systems with 32-bit

      * Linux
      * Mac Intel
      * Solaris
      * Windows

  64-bit distribution -- runs on 64-bit systems with 64-bit JRE

      * Linux x86_64
      * Linux ia64
      * Mac Intel
      * Solaris 64-bit

Major Improvements

      * Memory leak fixed in the HDF-Java native.
      * Added H5.getOpenIDCount() and H5.getOpenID() to track any open IDs.
        These functions can be very useful for checking memory leaks for
      * Added features to show data pointed to by object references
        and region references.
      * Added find/search dataset from HDFView.
      * Added user option to open a file directly with read-only mode.
      * It now shows unsigned 64-bit integer.
      * It supports netcdf3 files for the NETCDF module

Major Bug Fixes

      * HDFView: Incorrectly displays data-type: character array
      * HDFView: if change palette then flip image, original colorscale is used
      * Local version of HDFView doc has broken links etc.
      * HDView: indices changed between 2.3 and 2.4. Why?
      * HDFView does not show preceding spaces for attribute values that begin
        with spaces
      * HDFView uses incorrect image values
      * HDFView: "Show Value" is always 0 if show image for 32-bit unsigned
      * HDF4 object package failed on reading data
      * Incorrect Size of variable length dataset
      * Problem on import/export strings in compound datasets in HDFView
      * HDFView doc does not mention can save to PNG, GIF, BMP
      * HDFView: rainbow palette selection is different depending on where it is
      * Remove HDFCDataTypes from web page
      * HDFView: can't view contents of group if has same name as file
      * HDFView - Get error if open a compound dataset with string and reference
      * H5Sselect_hyperslab parameter order in header comment is wrong
      * High dim label is wrong
      * 16-bit and 32-bit images do not scale properly if set range
      * Use better memory allocation in HDF4 JNI to avoid crash on OutOfMemory
        error on large dataset.
      * Show some HDF-EOS attributes stored in HDF4 vdata.
      * Fix a problem of displaying information for HDF4 vdata without name.
      * Add HDF-Java logging levels to HDF5 JNI and set default level to

For questions regarding these or other HDF issues, contact: