Replace data and update EEG-MAT file.
This function is used to create/update EEG-MAT file with arbitrary
signal preprocessing function not supported by VBMEG.
[syntax]
vb_eegfile_update_data(inst_spec)
[input]
inst_spec : <<required>> <struct> instruction spec
: fields are as follows:
: .org_file : <<required>> EEG-MAT file which will be updated
: .new_data : <<required>> [n_channel x n_sample]
: .channel_type : <<optional>> ['EEG'] | 'EXTRA'
: .new_file : <<optional>> if you want to make new file.
: : ['org_file']
: : Empty means overwriting '.org_file'.
: .bin_data_dir : <<optional>> data stored directory.
: : This parameter is valid only when
: : '.new_file' field is set.
: : [(body of 'new_file')_bin]
: : e.g. './new_0123.eeg.mat' --> './new_0123_bin'
[output]
void
[note]
[history]
2011-02-08 (Sako) initial version
Copyright (C) 2011, ATR All Rights Reserved.
License : New BSD License(see VBMEG_LICENSE.txt)0001 function vb_eegfile_update_data(inst_spec) 0002 % Replace data and update EEG-MAT file. 0003 % 0004 % This function is used to create/update EEG-MAT file with arbitrary 0005 % signal preprocessing function not supported by VBMEG. 0006 % 0007 % [syntax] 0008 % vb_eegfile_update_data(inst_spec) 0009 % 0010 % [input] 0011 % inst_spec : <<required>> <struct> instruction spec 0012 % : fields are as follows: 0013 % : .org_file : <<required>> EEG-MAT file which will be updated 0014 % : .new_data : <<required>> [n_channel x n_sample] 0015 % : .channel_type : <<optional>> ['EEG'] | 'EXTRA' 0016 % : .new_file : <<optional>> if you want to make new file. 0017 % : : ['org_file'] 0018 % : : Empty means overwriting '.org_file'. 0019 % : .bin_data_dir : <<optional>> data stored directory. 0020 % : : This parameter is valid only when 0021 % : : '.new_file' field is set. 0022 % : : [(body of 'new_file')_bin] 0023 % : : e.g. './new_0123.eeg.mat' --> './new_0123_bin' 0024 % 0025 % [output] 0026 % void 0027 % [note] 0028 % 0029 % [history] 0030 % 2011-02-08 (Sako) initial version 0031 % 0032 % Copyright (C) 2011, ATR All Rights Reserved. 0033 % License : New BSD License(see VBMEG_LICENSE.txt) 0034 0035 % --- CHECK ARGUMENTS --- % 0036 if ~exist('inst_spec', 'var'), inst_spec = []; end 0037 [inst_spec] = inner_check_arguments(inst_spec); 0038 0039 % --- MAIN PROCEDURE --------------------------------------------------------- % 0040 % 0041 org_file = inst_spec.org_file; 0042 [ch_info] = vb_load_channel_info(org_file, inst_spec.channel_type); 0043 0044 0045 if ~isempty(inst_spec.new_file) 0046 % --- copy org_file - by using vb_load_meg_data() 0047 0048 load_spec.ChannelType = 'ALL'; 0049 load_spec.bin_data_dir = inst_spec.bin_data_dir; 0050 vb_load_meg_data(org_file, load_spec, inst_spec.new_file); 0051 0052 0053 else 0054 % --- overwrite original file 0055 inst_spec.new_file = org_file; 0056 end 0057 0058 0059 % ------------------- % 0060 % --- UPDATE DATA --- % 0061 % ------------------- % 0062 eeg_info = vb_load_measurement_info(inst_spec.new_file); 0063 tmp_dir = vb_eeginfo_get_datadir(eeg_info); 0064 eeg_root = vb_get_file_parts(inst_spec.new_file); 0065 0066 data_dir = [eeg_root '/' tmp_dir]; 0067 0068 PRECISION = vb_eeginfo_get_datatype(eeg_info); 0069 % --- PRECISION [N x 1] 0070 0071 vb_define_device; 0072 0073 n_channel = size(ch_info.Name, 1); 0074 for i_ch = 1:n_channel 0075 ch_name = ch_info.Name{i_ch}; 0076 cur_ch_file = sprintf('%s/%s.%s', ... 0077 data_dir, ch_name, FILE_EXT_BIN_CH_EEG); 0078 0079 cur_fid = fopen(cur_ch_file, 'wb'); 0080 if cur_fid == -1 0081 error('(%s)cannot open file (%s)', mfilename, cur_ch_file); 0082 end 0083 0084 fwrite(cur_fid, inst_spec.new_data(i_ch, :), PRECISION{i_ch}); 0085 fclose(cur_fid); 0086 % fprintf('--- UPDATED %s\n', cur_ch_file); 0087 end 0088 0089 return; 0090 % 0091 % --- END OF MAIN PROCEDURE -------------------------------------------------- % 0092 0093 % --- INNER FUNCTIONS -------------------------------------------------------- % 0094 % 0095 % --- inner_check_arguments() 0096 % 0097 function [inst_spec] = inner_check_arguments(inst_spec) 0098 if isempty(inst_spec) 0099 error('(%s) inst_spec is a required parameter', mfilename); 0100 end 0101 0102 if ~isfield(inst_spec, 'org_file') || isempty(inst_spec.org_file) 0103 error('(%s) inst_spec.org_file is a required field', mfilename); 0104 end 0105 0106 if exist(inst_spec.org_file, 'file') ~= 2 0107 error('(%s) cannot find inst_spec.org_file : %s', ... 0108 mfilename, inst_spec.org_file); 0109 end 0110 0111 if ~isfield(inst_spec, 'new_data') || isempty(inst_spec.new_data) 0112 error('(%s) inst_spec.new_data is a required field', mfilename); 0113 end 0114 0115 if ~isfield(inst_spec, 'channel_type') || isempty(inst_spec.channel_type) 0116 inst_spec.channel_type = 'EEG'; 0117 end 0118 0119 if ~isfield(inst_spec, 'new_file') 0120 inst_spec.new_file = ''; 0121 0122 elseif ~isfield(inst_spec, 'bin_data_dir') 0123 inst_spec.bin_data_dir = ''; 0124 end 0125 % 0126 % --- end of inner_check_arguments() 0127 % 0128 % --- END OF INNER FUNCTIONS ------------------------------------------------- % 0129 0130 % --- END OF FILE --- %