tempdir2

function tempDir2 = tempdir2
%TEMPDIR2  Return temporary directory.
%		DIR = TEMPDIR2 returns as a temporary directory the directory
%		<TEMPDIR>/<USERNAME>@<HOSTNAME>/MATLAB. This directory is user- and
%		host-specific and thus better suited in networks/clusters than the
%		temporary directory returned by Matlab function TEMPDIR.
%
%		Markus Buehren
%		Last modified 20.04.2008 
%
%		See also TEMPDIR, GETUSERNAME, GETHOSTNAME.

persistent tempDir2Persistent

if isempty(tempDir2Persistent)
	
	% build directory string
	tempDir2 = tempdir;
	tempDir2 = fullfile(tempDir2, [getusername '@' gethostname], 'MATLAB');
	
	% if directory is not existing, try to create it
	if ~exist(tempDir2, 'dir')
		try
			mkdir(tempDir2);
		catch
			error('Unable to create directory %s.', tempDir2);
		end
	end

	% save string for next function call
	tempDir2Persistent = tempDir2;
else
	% return string computed before
	tempDir2 = tempDir2Persistent;
end