vb_meg_parm_get_measurement

 Return Measurement and device from meg_parm.
 [USAGE]
    [Measurement, Device] = vb_meg_parm_get_measurement(<meg_parm>);
 [IN]
    meg_parm : meg_parm for device.
 [OUT]
    Measurement : Measurement type
         Device : device type
 [NOTE]
    @see : vb_meg_parm_set_measurement()
    If Measurement or device fields do not exists(or empty), 
    this function starts deciding Measurement and device.
    But it failed, return empty.

 Copyright (C) 2011, ATR All Rights Reserved.
 License : New BSD License(see VBMEG_LICENSE.txt)

0001 function [Measurement, Device] = vb_meg_parm_get_measurement(meg_parm)
0002 % Return Measurement and device from meg_parm.
0003 % [USAGE]
0004 %    [Measurement, Device] = vb_meg_parm_get_measurement(<meg_parm>);
0005 % [IN]
0006 %    meg_parm : meg_parm for device.
0007 % [OUT]
0008 %    Measurement : Measurement type
0009 %         Device : device type
0010 % [NOTE]
0011 %    @see : vb_meg_parm_set_measurement()
0012 %    If Measurement or device fields do not exists(or empty),
0013 %    this function starts deciding Measurement and device.
0014 %    But it failed, return empty.
0015 %
0016 % Copyright (C) 2011, ATR All Rights Reserved.
0017 % License : New BSD License(see VBMEG_LICENSE.txt)
0018 
0019 %
0020 % --- Previous check
0021 %
0022 if ~exist('meg_parm', 'var')
0023   error('meg_parm is a required parameter.');
0024 end
0025 
0026 %
0027 % --- Main Procedure
0028 %
0029 Measurement = '';
0030 Device      = '';
0031 
0032 if isfield(meg_parm, 'Measurement') && ~isempty(meg_parm.Measurement)
0033   Measurement = meg_parm.Measurement;
0034 end
0035 if isfield(meg_parm, 'device') && ~isempty(meg_parm.device)
0036   Device = meg_parm.device;
0037 end
0038 
0039 if ~isempty(Measurement) && ~isempty(Device)
0040   return;
0041 end
0042 
0043 % rescue start
0044 if isfield(meg_parm, 'yokogawa_file')
0045   Measurement = 'MEG';
0046   Device      = 'YOKOGAWA';
0047 elseif isfield(meg_parm, 'sbi_file')
0048   Measurement = 'MEG';
0049   Device      = 'SBI';
0050 elseif isfield(meg_parm, 'measurement_file')
0051   Measurement = 'EEG';
0052   Device      = 'BIOSEMI';
0053 else
0054   % do nothing (return empty)
0055 end