Why am I unable to uncompress my archive using the GUNZIP function in MATLAB?

When I attempt to uncompress a file called "myarchive.Z", using the following command in MATLAB 7.0 (R14):

gunzip myarchive.Z

I receive the following error message:

Error Messages: ??? Error using ==> gunzip>gunzipwrite

File "/tmp/igr11290.sp3.Z" is not in GZIP format.

Error in ==> gunzip>gunzipEntries at 99

    names{end+1} = gunzipwrite(entries(i).file, outputDir, baseName, streamCopier);

Error in ==> gunzip at 54

     names = gunzipEntries(entries, outputDir);

The file uncompresses correctly from the system command line outside the MATLAB envrionment.

Answer 1

[MathWorks Support Team]

The ability to uncompress archives other than GNU-zipped files created using the GZIP command is not available in MATLAB. For example, the Solaris compress file format is not supported by the GUNZIP command. There are no workarounds.