[Master Index] [Index for Toolbox]

# plot_dipole

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

### Function Synopsis

    plot_dipole(r,n,s,c)

### Help Text

    PLOT_DIPOLE - (r,n,s,c)
     function plot_dipole(r,n,s,c)
     r=[x y z] dipole location
     n=[nx ny nz] dipole orientation + strength ; this is not normalized!
     s=scale factor to adapt size of dipole
     c=[r g b] color
     (c)2003 Felix Darvas, Ph.D.
     Signal & Image Processing Institute
     USC

### Cross-Reference Information

This function is called by

    bst_imaging_display                C:\BrainStorm_2001\Toolbox\bst_imaging_display.m

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

    function plot_dipole(r,n,s,c)
    %PLOT_DIPOLE - (r,n,s,c)
    % function plot_dipole(r,n,s,c)
    % r=[x y z] dipole location
    % n=[nx ny nz] dipole orientation + strength ; this is not normalized!
    % s=scale factor to adapt size of dipole
    % c=[r g b] color
    % (c)2003 Felix Darvas, Ph.D.
    % Signal & Image Processing Institute
    % USC

    %<autobegin> ---------------------- 26-May-2004 11:34:08 -----------------------
    % --------- Automatically Generated Comments Block Using AUTO_COMMENTS ---------
    %
    % CATEGORY: Visualization
    %
    % At Check-in: $Author: Mosher $  $Revision: 11 $  $Date: 5/26/04 10:02a $
    %
    % 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 11:34:08 -----------------------

    [xc,yc,zc]=cylinder;
    [xs,ys,zs]=sphere;
    xs=xs*s;
    ys=ys*s;
    zs=zs*s;
    xc=xc*s/2;
    yc=yc*s/2;
    zc=zc*3*s*norm(n); % 4 is a scale for length of dipole
    zc=zc+s/2;
    nn=n/norm(n);

    xcc=reshape(xc,prod(size(xc)),1);
    ycc=reshape(yc,prod(size(yc)),1);
    zcc=reshape(zc,prod(size(zc)),1);

    alpha=acos(nn(1));
    beta=acos(nn(2));
    gamma=acos(nn(3));
    R1=[1 0 0; 0 nn(1) sqrt(1-nn(1)^2);0 -sqrt(1-nn(1)^2) nn(1)];
    R2=[nn(2) 0 -sqrt(1-nn(2)^2);0 1 0;sqrt(1-nn(2)^2) 0 nn(2)];
    R3=[nn(3) sqrt(1-nn(3)^2) 0;-sqrt(1-nn(3)^2) nn(3) 0;0 0 1];

    RR=R1*R2*R3;
    rr=(RR*[xcc ycc zcc]')';
    xcc=rr(:,1);ycc=rr(:,2);zcc=rr(:,3);
    xc=reshape(xcc,size(xc,1),size(xc,2));
    yc=reshape(ycc,size(yc,1),size(yc,2));
    zc=reshape(zcc,size(zc,1),size(zc,2));

    xs=xs+r(1);
    xc=xc+r(1);
    ys=ys+r(2);
    yc=yc+r(2);
    zs=zs+r(3);
    zc=zc+r(3);
    hold on
    s = surf(xc,yc,zc);
    set(s,'EdgeColor','none','FaceColor',c);
    hold on
    s = surf(xs,ys,zs);
    set(s,'EdgeColor','none','FaceColor',c);
    hold off

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