vb_trial_extractor_set_continuous_file

 set continuous MEG/EEG-MAT file.
 [USAGE]
    data = vb_trail_extractor_set_continuous_file(data, file)
 [IN]
    data : vb_trial_extractor object.
    file : continuous MEG/EEG-MAT filename.
 [OUT]
    data : vb_trial_extractor object.

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

0001 function data = vb_trial_extractor_set_continuous_file(data, file)
0002 % set continuous MEG/EEG-MAT file.
0003 % [USAGE]
0004 %    data = vb_trail_extractor_set_continuous_file(data, file)
0005 % [IN]
0006 %    data : vb_trial_extractor object.
0007 %    file : continuous MEG/EEG-MAT filename.
0008 % [OUT]
0009 %    data : vb_trial_extractor object.
0010 %
0011 % Copyright (C) 2011, ATR All Rights Reserved.
0012 % License : New BSD License(see VBMEG_LICENSE.txt)
0013 
0014 %
0015 % --- Previous check
0016 %
0017 if ~exist('data', 'var')
0018     error('data is required parameter.');
0019 end
0020 
0021 %
0022 % --- Main Procedure
0023 %
0024 H = data.H;
0025 try
0026     if ~exist('file', 'var') || exist(file, 'file') ~= 2
0027         error('Invalid MEG/EEG-MAT file was specified.');
0028     end
0029     if strcmp(getappdata(H.continuous_file_edit, 'file'), file)
0030         return;
0031     end
0032     % create continous data
0033     continuous_file = vb_continuous_file_new(file);
0034     data = vb_trial_extractor_init(data.figure);
0035     data.continuous_file = continuous_file;
0036 
0037     % clear trial data
0038     data.trial_list = [];
0039     data = vb_trial_extractor_update_screen(data);
0040 
0041     set(H.continuous_file_edit, 'String', file);
0042 
0043     % display channel settings in view function
0044     MEGinfo = vb_continuous_file_get_meg_info(data.continuous_file);
0045     measurement = vb_info_get_measurement(MEGinfo);
0046 
0047     data.org_data_ch_list = ...
0048         vb_continuous_file_get_ch_list(data.continuous_file, measurement);
0049 
0050     
0051     Ndata_ch = size(data.org_data_ch_list, 1);
0052     if Ndata_ch > 100
0053         step = ceil(Ndata_ch / 50);
0054         % reduce channel number for plot about 50
0055         data.view_data_ch_list = data.org_data_ch_list(1:step:Ndata_ch);
0056     else
0057         data.view_data_ch_list = data.org_data_ch_list;
0058     end
0059 
0060     % create channel pattern default settings(all 0)
0061     [ex_ch_list] = vb_continuous_file_get_ch_list(data.continuous_file, 'EXTRA');
0062     Next_ch = size(ex_ch_list, 1);
0063     data.multi_channel_pattern = cell(Next_ch, 2);
0064     for k=1:Next_ch
0065         data.multi_channel_pattern{k, 1} = ex_ch_list{k};
0066         data.multi_channel_pattern{k, 2} = 0; % default
0067     end
0068 
0069     % default setting for output
0070     freq = vb_continuous_file_get_sample_freq(continuous_file);
0071     data.output_sample_freq = freq;
0072     
0073     % Save filename
0074     setappdata(H.continuous_file_edit, 'file', file);
0075 
0076 catch
0077     set(H.continuous_file_edit, 'String', getappdata(H.continuous_file_edit, 'file'));
0078     [msg, msg_f] = vb_get_error_msg(lasterror);
0079     errordlg(msg_f, 'Continuous MEG/EEG File.');
0080 end
0081 
0082 %
0083 % --- After check
0084 %
0085 if nargout ~= 1
0086     error('function caller should receive vb_trial_extractor object.');
0087 end