bml_info_raw

 BML_INFO_RAW return a annot table with OS and header info of each raw file in a folder. 

 Use as
   tab = bml_info_raw(cfg);

 'raw' files are those that can be read by ft_read_header.

 The first argument cfg is a configuration structure, which can contain
 the following field:
 cfg.path - string: path to the folder containing the files. Defauts to '.'
 cfg.has_channel - cell of strings: channels required 

 Returns a matlab 'table' with the folloing variables:
   starts - double: time in seconds 
   ends - double: time in seconds 
   name - cell array of char: filename
   folder - cell array of char: path
   date - cell array of char: data of file modification 
   bytes - double: Size of the file in bytes
   isdir - logical: 1 if name is a folder; 0 if name is a file
   datenum - double: Modification date as serial date number.
   chantype
   Fs
   nSamples
   nChans
   nTrials
   chantype
   chanunit
   duration

0001 function info = bml_info_raw(cfg)
0002 
0003 % BML_INFO_RAW return a annot table with OS and header info of each raw file in a folder.
0004 %
0005 % Use as
0006 %   tab = bml_info_raw(cfg);
0007 %
0008 % 'raw' files are those that can be read by ft_read_header.
0009 %
0010 % The first argument cfg is a configuration structure, which can contain
0011 % the following field:
0012 % cfg.path - string: path to the folder containing the files. Defauts to '.'
0013 % cfg.has_channel - cell of strings: channels required
0014 %
0015 % Returns a matlab 'table' with the folloing variables:
0016 %   starts - double: time in seconds
0017 %   ends - double: time in seconds
0018 %   name - cell array of char: filename
0019 %   folder - cell array of char: path
0020 %   date - cell array of char: data of file modification
0021 %   bytes - double: Size of the file in bytes
0022 %   isdir - logical: 1 if name is a folder; 0 if name is a file
0023 %   datenum - double: Modification date as serial date number.
0024 %   chantype
0025 %   Fs
0026 %   nSamples
0027 %   nChans
0028 %   nTrials
0029 %   chantype
0030 %   chanunit
0031 %   duration
0032 
0033 chantype    = bml_getopt(cfg, 'chantype', {}); 
0034 path        = bml_getopt(cfg, 'path');
0035 has_channel = bml_getopt(cfg, 'has_channel'); 
0036 
0037 info        = bml_info_file(cfg);
0038 
0039 if isempty(info); return; end
0040 info = info(info.bytes > 0,:);  
0041   
0042 hdr_vars={'chantype','Fs','nSamples','nChans','nTrials','chanunit'};
0043 hdr_table = cell2table(cell(height(info),length(hdr_vars)));
0044 hdr_table.Properties.VariableNames = hdr_vars;
0045 
0046 for i=1:height(info)
0047     hdr = ft_read_header(fullfile(info.folder{i},info.name{i}),'chantype',chantype);
0048     if ~isempty(has_channel)
0049       if ~all(ismember(has_channel,hdr.label))
0050         continue
0051       end
0052     end      
0053     hdr_table.chantype(i) = {strjoin(unique(hdr.chantype))};
0054     hdr_table.Fs(i) = {hdr.Fs};
0055     hdr_table.nSamples(i) = {hdr.nSamples};
0056     hdr_table.nChans(i) = {hdr.nChans};  
0057     hdr_table.nTrials(i) = {hdr.nTrials};    
0058     hdr_table.chanunit(i) = {strjoin(unique(hdr.chanunit))}; 
0059 end
0060 
0061 filtvec = ~cellfun(@isempty,hdr_table.nChans);
0062 hdr_table = hdr_table(filtvec,:);
0063 
0064 hdr_table.Fs = cell2mat(hdr_table.Fs);
0065 hdr_table.nSamples = cell2mat(hdr_table.nSamples);
0066 hdr_table.nChans = cell2mat(hdr_table.nChans);
0067 hdr_table.nTrials = cell2mat(hdr_table.nTrials);
0068 
0069 info = [info(filtvec,:) hdr_table];
0070 info.duration = info.nSamples ./ info.Fs;
0071 ends=bml_date2sec(info{:,'date'});
0072 starts = ends-info.duration;
0073 
0074 info=[table(starts,ends,'VariableNames',{'starts','ends'}) info];
0075 % info=sortrows(info,'starts');
0076 info=bml_annot_table(info,'raw_info');
0077 
0078 
0079