fiff_pick_channels_evoked

 [res] = fiff_pick_channels_evoked(orig,include,exclude)

 Pick desired channels from evoked-response data

 orig      - The original data
 include   - Channels to include (if empty, include all available)
 exclude   - Channels to exclude (if empty, do not exclude any)

0001 function [res] = fiff_pick_channels_evoked(orig,include,exclude)
0002 %
0003 % [res] = fiff_pick_channels_evoked(orig,include,exclude)
0004 %
0005 % Pick desired channels from evoked-response data
0006 %
0007 % orig      - The original data
0008 % include   - Channels to include (if empty, include all available)
0009 % exclude   - Channels to exclude (if empty, do not exclude any)
0010 %
0011 %
0012 
0013 %
0014 %   Author : Matti Hamalainen, MGH Martinos Center
0015 %   License : BSD 3-clause
0016 %
0017 %
0018 %   Revision 1.9  2006/10/04 20:12:37  msh
0019 %   Added fiff_read_evoked_all
0020 %   Modified fiff_pick_channels_evoked to handle multiple data sets
0021 %   Added bad channel writing to fiff_write_evoked
0022 %
0023 %   Revision 1.8  2006/06/29 22:12:28  msh
0024 %   Fixed errors in channel picking
0025 %
0026 %   Revision 1.7  2006/04/26 00:14:24  msh
0027 %   Return empty structure from fiff_pick_channels evoked and fiff_pick_types_evoked if there is no match.
0028 %   Accuracy checking was incorrect in mne_add_coil_defs
0029 %
0030 %   Revision 1.6  2006/04/23 15:29:40  msh
0031 %   Added MGH to the copyright
0032 %
0033 %   Revision 1.5  2006/04/22 10:59:30  msh
0034 %   Added fiff_pick_info
0035 %
0036 %   Revision 1.4  2006/04/20 23:33:20  msh
0037 %   Separated fiff_pick_channels and fiff_pick_types from the _evoked versions
0038 %
0039 %   Revision 1.3  2006/04/18 20:44:46  msh
0040 %   Added reading of forward solution.
0041 %   Use length instead of size when appropriate
0042 %
0043 %   Revision 1.2  2006/04/14 15:49:49  msh
0044 %   Improved the channel selection code and added ch_names to measurement info.
0045 %
0046 %   Revision 1.1  2006/04/14 00:45:42  msh
0047 %   Added channel picking and fiff_invert_transform
0048 %
0049 %
0050 
0051 me='MNE:fiff_pick_channels_evoked';
0052 
0053 if nargin == 1
0054     res = orig;
0055     return;
0056 elseif nargin == 2
0057     exclude = [];
0058 elseif nargin ~= 3
0059     error(me,'Incorrect number of arguments');
0060 end
0061 
0062 if isempty(include) && isempty(exclude)
0063     res = orig;
0064     return;
0065 end
0066 
0067 sel = fiff_pick_channels(orig.info.ch_names,include,exclude);
0068 if isempty(sel)
0069     res = [];
0070     fprintf(1,'Warning : No channels match the selection.\n');
0071     return;
0072 end
0073 
0074 res = orig;
0075 %
0076 %   Modify the measurement info
0077 %
0078 res.info = fiff_pick_info(res.info,sel);
0079 %
0080 %   Create the reduced data set
0081 %
0082 for k = 1:length(res.evoked)
0083     res.evoked(k).epochs = res.evoked(k).epochs(sel,:);
0084 end
0085 
0086 return;
0087 
0088 end
0089 
0090 
0091