get sensor position data from EEGinfo struct
[usage]
[SensorPosition, center] = vb_eeginfo_get_sensor_position(EEGinfo, active_swt)
[input]
EEGinfo : <required> EEGinfo struct data
active_swt : <optional> <<boolean>> [false] active filter switch
: true) return only active
: false) return all the channels
[output]
SensorPosition : [N_sensor x 3] 3-D coordinates of sensor
center : [1 x 3] coordinate of center point
result : <<integer>> error code
: 0) success
: 1) bad eeginfo
[note]
@see vb_eeginfo_set_sensor_position
[history]
2006-12-06 (Sako) initial version
2008-04-15 (Sako) added active_swt, result
Copyright (C) 2011, ATR All Rights Reserved.
License : New BSD License(see VBMEG_LICENSE.txt)0001 function [SensorPosition, center, result] = ... 0002 vb_eeginfo_get_sensor_position(EEGinfo, active_swt) 0003 % get sensor position data from EEGinfo struct 0004 % [usage] 0005 % [SensorPosition, center] = vb_eeginfo_get_sensor_position(EEGinfo, active_swt) 0006 % [input] 0007 % EEGinfo : <required> EEGinfo struct data 0008 % active_swt : <optional> <<boolean>> [false] active filter switch 0009 % : true) return only active 0010 % : false) return all the channels 0011 % [output] 0012 % SensorPosition : [N_sensor x 3] 3-D coordinates of sensor 0013 % center : [1 x 3] coordinate of center point 0014 % result : <<integer>> error code 0015 % : 0) success 0016 % : 1) bad eeginfo 0017 % [note] 0018 % @see vb_eeginfo_set_sensor_position 0019 % [history] 0020 % 2006-12-06 (Sako) initial version 0021 % 2008-04-15 (Sako) added active_swt, result 0022 % 0023 % Copyright (C) 2011, ATR All Rights Reserved. 0024 % License : New BSD License(see VBMEG_LICENSE.txt) 0025 0026 if ~exist('EEGinfo', 'var'), EEGinfo = []; end 0027 if ~exist('active_swt', 'var'), active_swt = []; end 0028 [EEGinfo, active_swt, result] = inner_check_arguments(EEGinfo, active_swt); 0029 0030 % --- MAIN PROCEDURE --------------------------------------------------------- % 0031 % 0032 SensorPosition = []; 0033 center = []; 0034 0035 if result ~= 0 0036 return; 0037 end 0038 0039 if isfield(EEGinfo, 'Vcenter') 0040 center = EEGinfo.Vcenter; 0041 end 0042 0043 if isfield(EEGinfo, 'Coord') 0044 SensorPosition = EEGinfo.Coord; 0045 end 0046 0047 % --- active channel filter 0048 if isempty(SensorPosition) 0049 % --- end here 0050 return; 0051 end 0052 0053 if ~vb_info_active_channel_is_valid(EEGinfo) 0054 % do nothing any more 0055 return; 0056 end 0057 0058 if active_swt 0059 active_list = vb_info_get_active_channel(EEGinfo); 0060 0061 if length(active_list) ~= size(SensorPosition, 1) 0062 fprintf('(%s) different length - active list and sensor position\n', ... 0063 mfilename); 0064 return; 0065 end 0066 0067 % --- filtered sensor position 0068 SensorPosition = SensorPosition((active_list == 1),:); 0069 end 0070 return; 0071 % 0072 % --- END OF MAIN PROCEDURE -------------------------------------------------- % 0073 0074 % --- INNER FUNCTIONS -------------------------------------------------------- % 0075 % 0076 % --- inner_check_arguments() 0077 % 0078 function [EEGinfo, active_swt, result] = ... 0079 inner_check_arguments(EEGinfo, active_swt) 0080 func_ = mfilename; 0081 result = 0; 0082 0083 if isempty(EEGinfo) 0084 fprintf('(%s)EEGinfo is a required parameter\n', func_); 0085 result = 1; 0086 return; 0087 end 0088 0089 if isempty(active_swt) 0090 active_swt = false; 0091 end 0092 return; 0093 % 0094 % --- end of inner_check_arguments() 0095 % 0096 % --- END OF INNER FUNCTIONS ------------------------------------------------- % 0097 0098 % --- END OF FILE --- %