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%% Boundary of 3-D Point Cloud % Create and plot a set of random 3-D points. % Copyright 2015 The MathWorks, Inc. P = gallery('uniformdata',30,3,5); plot3(P(:,1),P(:,2),P(:,3),'.','MarkerSize',10) grid on %% % Plot the boundary using the default shrink factor. k = boundary(P); hold on trisurf(k,P(:,1),P(:,2),P(:,3),'Facecolor','red','FaceAlpha',0.1)