format = one of auto, bzip2, gzip, zip, or zlib

This option allows a compression format to be specified explicitly. Options are auto, bzip2, gzip, zip, or zlib.

If format=auto, then Uncompress will attempt to automatically detect the compression format used and uncompress the data with the correct method. Otherwise, if format is one of bzip2, gzip, zip, or zlib, the specified compression format will be assumed. The default is auto.

The Uncompress(data) command takes the given byte array or list of integers and attempts to uncompress it.  It returns a ByteArray.

If data is a list, its contents must be integers between -128 and 127.

$\mathrm{data}≔\mathrm{StringTools}:-\mathrm{Compress}\left(''The\; quick\; brown\; fox\; jumps\; over\; the\; lazy\; dog''\right)$

$\mathrm{data}≔\left[\begin{array}{ccccccccccccccccccccccccccccccccccccccccccccccccccc}120& \mathrm{-100}& 11& \mathrm{-55}& 72& 85& 40& 44& \mathrm{-51}& 76& \mathrm{-50}& 86& 72& 42& \mathrm{-54}& 47& \mathrm{-49}& 83& 72& \mathrm{-53}& \mathrm{-81}& 80& \mathrm{-56}& 42& \mathrm{-51}& 45& 40& 86& \mathrm{-56}& 47& 75& 45& 82& 40& 1& 74& \mathrm{-25}& 36& 86& 85& 42& \mathrm{-92}& \mathrm{-28}& \mathrm{-89}& 51& 0& 0& 107& \mathrm{-74}& 15& \mathrm{-38}\end{array}\right]$

$\mathrm{ArrayTools}:-\mathrm{Uncompress}\left(\mathrm{data}\right)$

$\left[\begin{array}{cccccccccccccccccccccccccccccccccccccccccccc}84& 104& 101& 32& 113& 117& 105& 99& 107& 32& 98& 114& 111& 119& 110& 32& 102& 111& 120& 32& 106& 117& 109& 112& 115& 32& 111& 118& 101& 114& 32& 116& 104& 101& 32& 108& 97& 122& 121& 32& 100& 111& 103& 0\end{array}\right]$

$\mathrm{timeline}≔''https://www.maplesoft.com/data/examples/dif/maple-timeline.dif.gz''\:$

$\mathrm{data}≔\mathrm{URL}:-\mathrm{Get}\left(\mathrm{timeline}\right)\:$

$\mathrm{numelems}\left(\mathrm{data}\right)$

$268$

$\mathrm{uncompressed}≔\mathrm{ArrayTools}:-\mathrm{Uncompress}\left(\mathrm{data}\right)\:$

$\mathrm{numelems}\left(\mathrm{uncompressed}\right)$

$268$

The ArrayTools[Uncompress] command was introduced in Maple 2015.

For more information on Maple 2015 changes, see Updates in Maple 2015.

The ArrayTools[Uncompress] command was updated in Maple 2018.

The format option was updated in Maple 2018.