NAME

       hrepack - copies an HDF file to a new file

SYNOPSIS

       hrepack -i input -o output [-V] [-h] [-v] [-t comp_info] [-c chunk_info] [-f cfile] [-m
               size]

DESCRIPTION

       hrepack copies an HDF file to a new file with/without compression and/or chunking.

OPTIONS

       -i input
              input HDF File

       -o output
              output HDF File

       -V     prints version of the HDF4 library and exits

       -h     prints usage information

       -v     verbose mode

       -t comp_info
              compression type: 'comp_info' is a string with the format  <object  list>:<type  of
              compression><parameters>

              <object  list>  is a comma separated list of object names meaning apply compression
              only to those objects.  '*' means all objects.

              <type of compression> can be:
              RLE

              for RLE compression

              HUFF

              for Huffman

              GZIP

              for gzip

              JPEG

              for JPEG (for images only)

              SZIP

              for szip

              NONE

              to uncompress

       <parameters> is optional compression info
              RLE

              no parameter

              HUFF

              the skip-size

              GZIP

              the deflation level

              JPEG

              the quality factor

              SZIP

              pixels per block, compression mode (NN or EC)

       -c chunk_info
              apply chunking.  chunk_info is  a  string  with  the  format  <object  list>:<chunk
              information>

              <object list> is a comma separated list of object names meaning apply chunking only
              to those objects.  '*' means all objects

              <chunk information> is the chunk size of each dimension: dim_1 x dim_2 x ...  dim_n
              or NONE, to unchunk a previous chunked object

       -f cfile
              file with compression information -t and -c

       -m size
              do not compress objects smaller than size (bytes)

EXAMPLES

       compresses all objects in the file file1.hdf, using RLE compression

       hrepack -v -i file1.hdf -o file2.hdf -t '*:RLE'

       applies  Skipping  Huffman  compression  with  skip  factor  of  1, for objects /group1/A,
       /group2/B and C

       hrepack -v -i file1.hdf -o file2.hdf -t '/group1/A,/group2/B,C:HUFF 1'

       applies RLE compression for object /group1/D.

       applies chunking to objects D and E using a chunk size of 10 for the 2 dimensions

       hrepack -v -i file1.hdf -o file2.hdf -t '/group1/D:RLE' -c 'D,E:10x10'

       uncompresses object A

       hrepack -v -i file1.hdf -o file2.hdf -t 'A:NONE'

       applies SZIP compression to object A, with parameters 8 and NN

       hrepack -v -i file1.hdf -o file2.hdf -t 'A:SZIP 8,NN'

       Note: the use of the verbose option -v is recommended

                                           28 May 2016                                 hrepack(1)