HDF Newsletter 48

CONTENTS

        http://hdf.ncsa.uiuc.edu/java-hdf-html/

Changes in this Release:

1. All bugs in our database were fixed.

2. The Java HDF Interface was upgraded:
   • The HDF library is now accessed as 'static' native methods, eliminating the need to explicitly initialize the HDFLibrary class. See the JHI manual for more information.

   • Support for Macintosh and Windows path names was added to the Java HDF Interface.

   • The HDFArray class was extended to handle arrays of any class of 'Number', (i.e., 'Float' as well as 'float') and also arrays of Java String objects.

   • Additional exception handling was implemented.

   • The JHI is now also distributed as a separate product.

3. The HDF Java Products were compiled and tested with JDK 1.2. The non-graphic parts work with 1.2 (e.g., the JHI), but some graphics components only work with JDK 1.1.

4. The JHI was successfully ported to Macintosh.

New Features in this Release

1. The Image window now provides an extra option to expand the image 2, 4, and 8 times using pixel replication. (See Chapter 5 of the User's Guide.)

2. The Vdata spreadsheet has a new option to save data from a 2D field. A Vdata field with order > 1 (i.e, the entries are a 1D array) may be selected and saved as a 2D HDF SDS. The saved dataset can be read by the JHV or other tools to create plots or images from the data.

Limitations

1. The JHV cannot be compiled with versions of the JDK older than 1.1.6.

2. The JHV can be compiled with JDK 1.2, but some of the graphics components do not work correctly with JFC. All components work with JDK 1.1.x.

3. The Java HDF Viewer does not support HDF-5. For more information about Java products for HDF-5, see:

           http://hdf.ncsa.uiuc.edu/java-hdf5-html/
   

      http://hdf.ncsa.uiuc.edu/HDF5/doc/PSandPDF/index.html

      ftp://ftp.ncsa.uiuc.edu/HDF/HDF5/docs/5-1.2.0-docs.tar