HDF 5 files involved in iterative reconstructions

Iterative reconstructions involve several types of data. We want files containing these data to be transportable across machine architectures, and to be easily readable by MPI-enabled parallel computers. For these and other reasons, we have chosen to use the Heirarchichal Data Format version 5 (HDF 5^2.2) as our basic file format. Routines to work with these files are provided in the C subroutine library dm_fileio.c in CVS diffmic/c/util as described in Sec. 2.4, and the IDL routines described in Sec. 2.5. Examples of using these routines are shown in the files dm_test_fileio.c and dm_test_fileio.pro in the respective test directories. You can also view the contents of an HDF 5 file using a variety of other programs, including h5dump (a utility program provided as part of the HDF 5 distribution) and a Java viewer (hdfview, available at http://hdf.ncsa.uiuc.edu/hdf-java-html/hdfview/).