(cal, [filespec], [dir])
Saves calibration data in the structure "cal" to a
calibration file in the CalData
If filespec is not passed, then it saves to default.mat
in the CalData
folder. If filespec is an integer, saves
to screenN.mat. If filespec is a string, saves to string.mat.
You can also pass the name with the training .mat already there.
Saves to existing file if it is found, otherwise creates a
new calibration file.
See also LoadCalFile
5/28/96 dgp Wrote it.
6/6/96 dgp Use CalibrationsFolder
7/25/96 dgp Use CalDataFolder
8/4/96 dhb More flexible filename interface.
8/21/97 dhb Rewrite for cell array convention.
8/25/97 dhb, pbe Fix bug in cell array handling.
8/26/97 dhb Make saving code parallel LoadCalFile
5/18/99 dhb Add optional directory arg.
8/10/00 dhb Fix loading code for default.mat
7/9/02 dhb Incorporate filespec/filename fix as suggested by Eiji Kimura.
3/27/12 dhb Pass dir to LoadCalFile
call, so that it does the right thing
in cases where cal file location is expilcitly passed.
4/2/13 dhb Updated for subdir searching logic.
4/12/13 dhb Make this save to cal file folder when file doesn't yet exist.
6/2/13 dhb More robust about whether passed filespec contains the trailing '.mat'.
11/30/14 dhb Handle case where .mat isn't in passed filename, and name is less then 5 chars long.