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# crossprod

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

### Function Synopsis

    p=crossprod(x,y)

### Help Text

    CROSSPROD - Cross product between two sets, each set with three columns
     function p=crossprod(x,y)
     p(i,:)=x(i,:) x y(i,:)
     x and y have three columns
     Deprecated, use Mathworks cross function, each set with three rows

### Cross-Reference Information

This function is called by

    bem_kernel                         C:\BrainStorm_2001\Toolbox\bem_kernel.m
    bem_xfer                           C:\BrainStorm_2001\Toolbox\bem_xfer.m
    hrow_linear                        C:\BrainStorm_2001\Toolbox\hrow_linear.m
    solid_angle2                       C:\BrainStorm_2001\Toolbox\solid_angle2.m

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

    function p=crossprod(x,y)
    %CROSSPROD - Cross product between two sets, each set with three columns
    % function p=crossprod(x,y)
    % p(i,:)=x(i,:) x y(i,:)
    % x and y have three columns
    % Deprecated, use Mathworks cross function, each set with three rows

    %<autobegin> ---------------------- 26-May-2004 11:29:55 -----------------------
    % --------- Automatically Generated Comments Block Using AUTO_COMMENTS ---------
    %
    % CATEGORY: Utility - Numeric
    %
    % At Check-in: $Author: Mosher $  $Revision: 12 $  $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 11:29:55 -----------------------

    if size(x,2)~=3 | size(y,2)~=3,
      error(' Must have three columns ')
    end
    p=[x(:,2).*y(:,3)-x(:,3).*y(:,2),...
       x(:,3).*y(:,1)-x(:,1).*y(:,3),...
       x(:,1).*y(:,2)-x(:,2).*y(:,1)];

Produced by color_mat2html, a customized BrainStorm 2.0 (Alpha) version of mat2html on Tue Nov 2 16:17:59 2004
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