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lijinfeng042

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jimbai

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lijinfeng042

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Matlab

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nono2009(½ð±Ò+1):¹ÄÀøÓ¦Öú¡£ 2010-10-23 06:37:31
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Originally posted by jimbai at 2010-10-21 22:58:13:
Ö»ÊÇÕâ¸öÒªÊÇ×÷ΪÒþº¯ÊýµÄ»°£¬ÓÖÓÐx2/y2ºÍthetaÁ¬¸ö²ÎÊý£¬ÕâÈÃÎÒÕâ¸ö³õѧÕß²»ÖªµÀ¸ÃÔõô´¦ÀíÁË¡£ÎÒ¿´µÄһЩ½Ì³ÌÉÏÊÇf(x,y)=0ÐÎʽµÄ»òÕßx=X(t),y=Y(t)Á½ÖÖÐÎʽµÄ¡£

ºÇºÇ ÈýάµÄÒþº¯Êý аæ7.8ÒԺ󶼿ÉÒÔ´ÓMupadµ÷ÓÃÁË Ò²¿ÉÒÔ×Ô¼ºÐ´Ò»¸ö ²»¹ý¼øÓÚÄã˵µÄ³õѧÕß,½¨ÒéÄ㻹ÊÇ¿´Ò»ÏÂÕâ¸öÌû×Ó Ö»Êǵ±º¯Êýµ÷ÓþͿÉÒÔÁË ËùÒÔÎÒÒ²¾Í²»Õ¹¿ªÁË  ºÇºÇ Ö»ÊÇ×ªÔØÐ£³¤µÄ
CODE:
function implot3(fun,rangexyz,ngrid,varargin)
%ÈýάÒþº¯Êý»æÍ¼
%
%ÊäÈë²ÎÊý˵Ã÷
           -fun º¯Êý¾ä±ú£¬¿ÉÒÔÊÇÄäÃû¡¢inlineºÍMº¯Êý
%                 -rangexy=[xmin xmax ymin ymax,zmin,zmax] »æÍ¼·¶Î§
%                 -ngrid »æÍ¼Ê±¼ÆËãµÄµãÊý
%
%Example
%fun=@(x,y,z)(x+y+z).*(x.*y+x.*z+y.*z)-10*x.*y.*z;
%rangexyz=[1 10 1 10 1 10];ngrid=50;
%implot3(fun,rangexyz,ngrid)
%
% Rewrite  LaterComer of MATLAB¼¼ÊõÂÛ̳
% See also http://www.matlabsky.com
% Contact me matlabsky@gmail.com
% Modifid at 2010-10-15 8:31:45
%
x=linspace(rangexyz(1),rangexyz(2),ngrid);
y=linspace(rangexyz(3),rangexyz(4),ngrid);
z=linspace(rangexyz(5),rangexyz(6),ngrid);
[xx,yy,zz]=meshgrid(x,y,z);
%fvector=vectorize(fun);% ½«Ä¿±êº¯ÊýʸÁ¿»¯
f=feval(fun,xx,yy,zz,varargin{:});
p=patch(isosurface(xx,yy,zz,f,0),varargin{:});
set(p, 'FaceColor', 'red', 'EdgeColor', 'none');
daspect([1 1 1])
view(3)
camlight;
lighting phong

¾ßÌå²Î¿¼http://www.matlabsky.com/thread-361-1-2.html

[ Last edited by lijinfeng042 on 2010-10-21 at 23:34 ]
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