.\" man page by Jim Van Zandt <jrv@vanzandt.mv.com>         -*- nroff -*-
.TH HDFPACK 1 "November 6, 1999"
.SH NAME
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.nh
hdfpack \- compress an HDF file
.SH SYNOPSIS
.HP
\fBhdfpack\fP
[\fB-i\fP|\fB-b\fP]
[\fB-d\fP \fIdata-descriptors-per-block\fP]
[\fB-t\fP \fIlinked-blocks-per-table-entry\fP]
\fIinput-hdf-file\fP
\fIoutput-hdf-file\fP
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.SH DESCRIPTION
\fBhdfpack\fP compresses all of the data in an HDF file and writes the
compressed data to a second HDF file.
.SH OPTIONS
.TP
.BI -b
Non-coalesced Blocks.  \fBhdfpack\fP will not coalesce linked-block
elements.
.TP
.BI -i
Interactive Mode.  \fBhdfpack\fP will prompt for each linked-block
element.
.TP
.BI -d " num"
Write an output file with the specified number of data descriptors per
block of data descriptors.
.TP
.BI -t " num"
Write an output file with the specified number of linked blocks per
table entry.
.SH EXAMPLES
To compress the data in the file named "aa.hdf" and store the
compressed data in the file named "aa.cmp", use the following
hdfpack command:
.nf

        hdfpack aa.hdf aa.cmp

.fi
Suppose a file named "bb.hdf" contains data elements stored as
sequences of linked blocks. The following hdfpack command compresses
the file while leaving the linked-block elements intact, and writes
the compressed data to a file named "bb.blk".
.nf

        hdfpack -b bb.hdf bb.blk

.fi
.SH "SEE ALSO"
\fBhdfcomp\fP(1), \fBhdf\fP(5)