mkdirquiet

 function mkdirquiet(x)

 <x> refers to a directory location

 make the directory, suppressing warnings
 (e.g. that the directory already exists).
 assert that the result was successful.

 example:
 mkdirquiet('temp');

0001 function mkdirquiet(x)
0002 
0003 % function mkdirquiet(x)
0004 %
0005 % <x> refers to a directory location
0006 %
0007 % make the directory, suppressing warnings
0008 % (e.g. that the directory already exists).
0009 % assert that the result was successful.
0010 %
0011 % example:
0012 % mkdirquiet('temp');
0013 
0014   prev = warning('query'); warning('off');
0015 success = mkdir(x);
0016   warning(prev);
0017 assert(success,sprintf('mkdir of %s failed',x));