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NAME

       hdp - display general information about the contents of an HDF file

SYNOPSIS

       hdp [-H command] hdf-file

DESCRIPTION

       hdp  provides  quick  and  general information about all objects in the
       specified HDF file. It can list the contents of HDF  files  at  various
       levels with different details. It can also dump the data of one or more
       specific objects in the file.

       Like hdfed, hdp provides a set of  commands  that  allow  the  user  to
       determine  what  kind  of information is to be displayed.  The commands
       are documented in  /usr/share/doc/libhdf4g/html-userguide/Utils14.html.

OPTIONS

       -H [command]
              Display  usage  information  about  the specified command. If no
              command is listed, information about all commands is  displayed.

COMMANDS

       list   Displays  the contents of the HDF files in the specified format.

       dumpsds
              Displays the contents of the SDSs in the listed files.

       dumpvd Displays the contents of the vdata objects in the listed  files.

       dumpvg Displays the contents of the vgroup objects in the listed files.

       dumprig
              Displays the contents of the RIGs in the listed files.

COMMAND DETAILS

       list displays the contents of the HDF files in  the  specified  format.
       As  with  the  ’info’  command,  the  listing for special elements will
       contain a special tag value (for DFTAG_VS  it’s  18347)  and  the  text
       "Unknown Tag".  The list command has the following syntax:

       list [-s|-l|-d] [-n|-c|-a] [-g|-t number-or-name] [-ot|-of|-og|-on]
              message

       The list command accepts these options:

       -s     Short format.

       -l     Long format.

       -d     Debug format.

       -n     Display the object name.

       -c     Display the object class.

       -a     Display the object description.

       -g     Display groups only.

       -t number-or-name
              Display objects with the specified tag number or name.

       -ot    Sort by tag.

       -of    Sort by position in the data descriptor list.

       -og    Sort by group.

       -on    Sort by name.

       dumpsds displays SDS information in the specified format.  The  dumpsds
       command has the following syntax:

       dumpsds [-i index | -r ref-list | -n name-list | -a] [-v|-h|-d] [-o
              filename | -b | -t]

       dumpsds accepts these options:

       -i index
              Dump SDSs with the specified index.

       -r ref-list
              Dump SDSs with the specified reference numbers.

       -n name-list
              Dump SDSs with the specified names.

       -a     Dump all SDSs.

       -v     Display all SDS contents including annotations.

       -h     Display the SDS header only.

       -d     Display the SDS data only.

       -o outfile
              Print information to the specified file.

       -b     Specify output file as binary.

       -t     Specify output file as text.

       dumpvd displays vdata information in the specified format.  The  dumpvd
       command has this syntax:

       dumpvd [-i index | -r ref-list | -n name-list | -c class | [-a]
              [-v|-h|-f|-d] [-o filename | -b | -t]

       dumpvd accepts these options:

       -i index
              Dump vdatas with the specified index.

       -r ref-list
              Dump vdatas with the specified reference numbers.

       -c class
              Dump vdatas with the specified class.

       -n name-list
              Dump vdatas with the specified names.

       -a     Dump all vdatas.

       -v     Display all vdata contents including annotations.

       -h     Display the vdata header only.

       -d     Display the vdata data only.

       -f     Display the vdata field data only.

       -o outfile
              Print information to the specified file.

       -b     Specify output file as binary.

       -t     Specify output file as text.

       dumpvg displays vgroup information in  the  specified  format.   dumpvg
       command has this syntax:

       dumpvg [-i index | -r ref-list | -n name-list | -c class | [-a]
              [-v|-h|-d] [-o filename | -b | -t]

       dumpvg accepts these options:

       -i index
              Dump vgroups with the specified index.

       -r ref-list
              Dump vgroups with the specified reference numbers.

       -c class
              Dump vgroups with the specified class.

       -n name-list
              Dump vgroups with the specified names.

       -a     Dump all vgroups.

       -v     Display all vgroup contents including annotations.

       -h     Display the vgroup header only.

       -d     Display the vgroup data only.

       -o outfile
              Print information to the specified file.

       -b     Specify output file as binary.

       -t     Specify output file as text.

       dumprig displays RIG information  in  the  specified  format.   dumprig
       command has this syntax:

       dumprig [-i index | -r ref-list | -m <8, 24> | [-a] [-v|-h|-d] [-o
              filename | -b | -t]

       dumprig accepts these options:

       -i index
              Dump RIGs with the specified index.

       -r ref-list
              Dump RIGs with the specified reference numbers.

       -m data-length
              Dump RIGs with the specified data length: 8- or 24-bit.

       -a     Dump all RIGs.

       -v     Display RIG contents including annotations.

       -h     Display the RIG header only.

       -d     Display the RIG data only.

       -o outfile
              Print information to the specified file.

       -b     Specify output file as binary.

       -t     Specify output file as text.

SEE ALSO

       hdfed(1), hdf(5),  /usr/share/doc/libhdf4g/html-userguide/Utils14.html.

                               November 6, 1999                         HDP(1)