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3Â¥2014-10-09 13:34:35
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3Â¥: Originally posted by ÔÂÖ»À¶ at 2014-10-09 13:34:35
MATLABµÄ find º¯Êý¿ÉʵÏÖ
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help find¿´¹ý£¬»¹ÊDz»Çå³þ£¬findÃüÁîÕÒµ½µÄÊÇÔªËØµÄλÖã¬ÎÒÏëµÃµ½Âú×ãÌõ¼þµÄuºÍtµÄ·¶Î§£¬Äܲ»ÄÜÔÙ¾ßÌ彲һϣ¬·Ç³£¸Ðл
4Â¥2014-10-09 16:07:14
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ÓÄÓÄÓÆÓÆÓÂ: ½ð±Ò+30, ¡ï¡ï¡ï¡ï¡ï×î¼Ñ´ð°¸, ·Ç³£¸Ðл 2014-10-12 10:19:50
u=-5:0.2:10;
t=-10:0.2:0;
[U,T]=meshgrid(u,t);
I=U+T;
I(I<=0)=NaN;
mesh(U,T,I)
figure
X=find(I>0);
figure
plot(U(X),T(X),'.')
The more you learn, the more you know, the more you know, and the more you forget. The more you forget, the less you know. So why bother to learn.
5Â¥2014-10-09 17:22:14
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ÒýÓûØÌû:
5Â¥: Originally posted by dbb627 at 2014-10-09 17:22:14
u=-5:0.2:10;
t=-10:0.2:0;
=meshgrid(u,t);
I=U+T;
I(I<=0)=NaN;
mesh(U,T,I)
figure
X=find(I>0);
figure
plot(U(X),T(X),'.')

·Ç³£¸Ðл£¬ÎÒÊÔÁËһϣ¬³öÏÖÁËÈýÕÅͼ£¬ÆäÖÐfigure2ÊÇ¿Õͼ£¬²»Ì«Ã÷°×£¬Çë´óÏÀÔÙÖ¸µãһϣ¬Ð»Ð»
6Â¥2014-10-12 10:02:02
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dbb627

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ÒýÓûØÌû:
6Â¥: Originally posted by ÓÄÓÄÓÆÓÆÓÂ at 2014-10-12 10:02:02
·Ç³£¸Ðл£¬ÎÒÊÔÁËһϣ¬³öÏÖÁËÈýÕÅͼ£¬ÆäÖÐfigure2ÊÇ¿Õͼ£¬²»Ì«Ã÷°×£¬Çë´óÏÀÔÙÖ¸µãһϣ¬Ð»Ð»...

u=-5:0.2:10;
t=-10:0.2:0;
[U,T]=meshgrid(u,t);
I=U+T;
I(I<=0)=NaN;
mesh(U,T,I)  %z  aixs display I>0
X=find(I>0);
figure
plot(U(X),T(X),'.') % plot Âú×ãI>0µÄ[U,T]
The more you learn, the more you know, the more you know, and the more you forget. The more you forget, the less you know. So why bother to learn.
7Â¥2014-10-12 10:08:05
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