MATLAB Examples

```figure; subplot(2,2,1); load mri; T = [1 0 0 0;0 1 0 0;0 0 2.5 0]; h1 = slice3(squeeze(D),T,1,64); h2 = slice3(squeeze(D),T,2,64); h3 = slice3(squeeze(D),T,3,14); set([h1,h2,h3],'EdgeColor','black','LineStyle','-'); colormap gray(88); view(30,30); axis equal; axis vis3d; light; title('three slices rendered by slice3'); a = axis; subplot(2,2,2); load clown; C = reshape(map(X,:),[200,320,3]); for k = 1:5 alpha = rand*360; % rotation, in ccw degrees cx = rand*800; cy = rand*600; cz = 0; % the center position R = [+cos(alpha/180*pi) -sin(alpha/180*pi); % new x coordinate +sin(alpha/180*pi) +cos(alpha/180*pi); % new y coordinate 0 0]*(0.5+rand)/1.5; % z = 0. t = [cx;cy;cz] - R * [size(C,1)/2+0.5; size(C,2)/2+0.5]; % fix center h = image3(C,[R t]); axis equal end title('5 images displayed in 2-D by image3'); subplot(2,2,3); load mri; D=squeeze(D); be = [54,96,34,96,1,14]; h = box3(D,[1 0 0 0;0 1 0 0;0 0 2.5 0],be); set(h,'EdgeColor','black','LineStyle','-'); colormap gray(88); view(30,30); axis equal; axis vis3d; axis(a); light; title('a volume rendered by box3'); % Requires frey_faces.mat % Available at http://www.cs.toronto.edu/~roweis/data.html subplot(2,2,4); try load frey_rawface; catch error('download frey_rawface from http://www.cs.toronto.edu/~roweis/data.html'); return end facelibrary = {}; for k = 1:length(ff) f = reshape(ff(:,k),[20 28]); facelibrary{k} = f; end N = 1000; h = scatterim2(randn(N,1),randn(N,1),facelibrary,rand(N,1)*1+0.01); set(h,'CDataMapping','scaled'); colormap gray axis ij; axis equal; title('a scatterplot using scatterim2'); ```