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# mby6check

## (Toolbox/mby6check.m in BrainStorm 2.0 (Alpha))

### Function Synopsis

    [R,s] = mby6check(A);

### Help Text

    MBY6CHECK - Check to see if matrix is m by 6 or 6 by m.
     function [R,s] = mby6check(A);
     First three (cols or rows) of A map to R, next three to s.
     Return both matrice as 3 x M, with message to user if M is six also.
     Reject input if neither dimension is six.
     A is typically location and orientation information combined in one matrix.
     See loc_basis, sarvas, sarvas_der for examples of input type.

### Listing of function C:\BrainStorm_2001\Toolbox\mby6check.m

    function [R,s] = mby6check(A);
    %MBY6CHECK - Check to see if matrix is m by 6 or 6 by m.
    % function [R,s] = mby6check(A);
    % First three (cols or rows) of A map to R, next three to s.
    % Return both matrice as 3 x M, with message to user if M is six also.
    % Reject input if neither dimension is six.
    % A is typically location and orientation information combined in one matrix.
    % See loc_basis, sarvas, sarvas_der for examples of input type.

    %<autobegin> ---------------------- 26-May-2004 11:30:55 -----------------------
    % --------- Automatically Generated Comments Block Using AUTO_COMMENTS ---------
    %
    % CATEGORY: Utility - General
    %
    % At Check-in: $Author: Mosher $  $Revision: 13 $  $Date: 5/26/04 9:59a $
    %
    % This software is part of BrainStorm Toolbox Version 2.0 (Alpha) 24-May-2004
    %
    % Principal Investigators and Developers:
    % ** Richard M. Leahy, PhD, Signal & Image Processing Institute,
    %    University of Southern California, Los Angeles, CA
    % ** John C. Mosher, PhD, Biophysics Group,
    %    Los Alamos National Laboratory, Los Alamos, NM
    % ** Sylvain Baillet, PhD, Cognitive Neuroscience & Brain Imaging Laboratory,
    %    CNRS, Hopital de la Salpetriere, Paris, France
    %
    % See BrainStorm website at http://neuroimage.usc.edu for further information.
    %
    % Copyright (c) 2004 BrainStorm by the University of Southern California
    % This software distributed  under the terms of the GNU General Public License
    % as published by the Free Software Foundation. Further details on the GPL
    % license can be found at http://www.gnu.org/copyleft/gpl.html .
    %
    % FOR RESEARCH PURPOSES ONLY. THE SOFTWARE IS PROVIDED "AS IS," AND THE
    % UNIVERSITY OF SOUTHERN CALIFORNIA AND ITS COLLABORATORS DO NOT MAKE ANY
    % WARRANTY, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO WARRANTIES OF
    % MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE, NOR DO THEY ASSUME ANY
    % LIABILITY OR RESPONSIBILITY FOR THE USE OF THIS SOFTWARE.
    %<autoend> ------------------------ 26-May-2004 11:30:55 -----------------------

    % ----------------------------- Script History ---------------------------------
    % JCM 19-May-2004  Comments cleaning
    % ----------------------------- Script History ---------------------------------

    [mA,nA] = size(A);

    if((mA==6) & (nA==6)),
      disp('Input matrix is six by six.')
      disp(...
          'Program will assume that each COLUMN corresponds to 3-D information.')
      disp('If assumption is incorrect, rerun routine with matrix transposed.')
      B = A;
    elseif((mA~=6) & (nA~=6))    % neither is a three
      error('Input matrix is not three dimensional in either row or column.')
    elseif(nA==6),         % we want to transpose
      B = A';
    else
      B = A;            % it's fine as is.
    end

    R = B(1:3,:);            % typically sensor locations
    s = B(4:6,:);            % typically sensor orientations

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