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<html><head> <meta HTTP-EQUIV="Content-Type" CONTENT="text/html;charset=ISO-8859-1"> <title>plane3.m</title><link rel="stylesheet" type="text/css" href="../../m-syntax.css"></head><body><code><span class=defun_kw>function</span> <span class=defun_out>varargout</span>=<span class=defun_name>plane3</span>(<span class=defun_in>arg1,arg2</span>)<br><span class=h1>% PLANE3 Plots plane in 3d.</span><br><span class=help>%</span><br><span class=help>% <span class=help_field>Synopsis:</span></span><br><span class=help>% h=plane3( W, b )</span><br><span class=help>% h=plane3( model )</span><br><span class=help>%</span><br><span class=help>% <span class=help_field>Description:</span></span><br><span class=help>% h=plane3( W, b ) plots the plane described as</span><br><span class=help>% W'*x + b = 0.</span><br><span class=help>%</span><br><span class=help>% h=plane3( model ) structure model contains plane </span><br><span class=help>% parametres W and b.</span><br><span class=help>%</span><br><span class=help>% <span class=help_field>Output:</span></span><br><span class=help>% h [1 x nobjects] Handles of used graphical objects.</span><br><span class=help>%</span><br><hr><span class=help1>% <span class=help1_field>About:</span> Statistical Pattern Recognition Toolbox</span><br><span class=help1>% (C) 1999-2003, Written by Vojtech Franc and Vaclav Hlavac</span><br><span class=help1>% <a href="http://www.cvut.cz">Czech Technical University Prague</a></span><br><span class=help1>% <a href="http://www.feld.cvut.cz">Faculty of Electrical Engineering</a></span><br><span class=help1>% <a href="http://cmp.felk.cvut.cz">Center for Machine Perception</a></span><br><br><span class=help1>% <span class=help1_field>Modifications:</span></span><br><span class=help1>% 17-may-2004, VF</span><br><span class=help1>% 13-apr-2003, VF</span><br><span class=help1>% 11-aug-2003, VF</span><br><br><hr><span class=keyword>if</span> isstruct(arg1),<br> W = arg1.W;<br> b = arg1.b;<br> <span class=keyword>if</span> <span class=stack>nargin</span> >= 2, col = arg2; <span class=keyword>else</span> col = <span class=quotes>'g'</span>; <span class=keyword>end</span><br><span class=keyword>else</span><br> W = arg1;<br> b = arg2;<br> <span class=keyword>if</span> <span class=stack>nargin</span> >= 3, col = arg3; <span class=keyword>else</span> col = <span class=quotes>'g'</span>; <span class=keyword>end</span><br><span class=keyword>end</span><br><br>ax=<span class=graph>axis</span>;<br><br>A=[ax(1) ax(3)];<br>B=[ax(2) ax(3)];<br>C=[ax(2) ax(4)];<br>D=[ax(1) ax(4)];<br><br>W=W(:);<br><br>A=[A, -(b + A*W(1:2))/W(3)];<br>B=[B, -(b + B*W(1:2))/W(3)];<br>C=[C, -(b + C*W(1:2))/W(3)];<br>D=[D, -(b + D*W(1:2))/W(3)];<br> <br>X=[A(1) B(1) C(1) D(1)];<br>Y=[A(2) B(2) C(2) D(2)];<br>Z=[A(3) B(3) C(3) D(3)];<br><br>h=patch(X,Y,Z,col);<br><span class=graph>set</span>(h,<span class=quotes>'faceAlpha'</span>,0.5);<br><br><span class=keyword>if</span> <span class=stack>nargout</span> >= 1, <span class=stack>varargout</span>{1} = h; <span class=keyword>end</span><br><br><span class=jump>return</span>;<br><span class=comment>% EOF</span><br></code>?? 快捷鍵說明
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