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zjy1818

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[ Last edited by sunxiao on 2009-3-8 at 12:32 ]
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fspdlh

½ð³æ (ÕýʽдÊÖ)

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coldwind042(½ð±Ò+2,VIP+0):лл°ïÖú£¡ 3-5 19:29
zjy1818(½ð±Ò+1,VIP+0):лл£¬ÎÒ¿´¿´£¬Ñ§Ï°Ñ§Ï° 3-7 00:30
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http://muchong.com/bbs/viewthread.php?tid=950146
2Â¥2009-03-05 18:44:08
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hitzhang

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coldwind042(½ð±Ò+3,VIP+0):ͼ·Ç³£Æ¯ÁÁ£¬Ð»Ð»ÄãµÄÈÈÐİïÖú£¡ 3-5 19:30
zjy1818(½ð±Ò+1,VIP+0):ֻʣһ¸ö½ð±ÒÁË£¬Ð»Ð»Ä㣬ÄãµÄ˼ÏëÊÇÓÃnanÈ¥²»ÒªµÄÇúÃæÂ𣿠ѧϰѧϰ 3-7 00:34
>> [x,y]=meshgrid(linspace(-1,1,1000));
>> z=x.^2+y.^2;
>> mesh(x,y,z)
>> xx=sin(linspace(0,2*pi,7));
>> yy=cos(linspace(0,2*pi,7));
>> IN = inpolygon(x(,y(,xx(,yy();
>> zz=z(;
>> zz(~IN)=nan;
>> zz=reshape(zz,1000,1000);
>> mesh(x,y,zz)
>>

[ Last edited by hitzhang on 2009-3-5 at 19:21 ]
3Â¥2009-03-05 19:20:16
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