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Originally posted by wuqingming2003 at 2009-10-14 09:25:
±¾ÈËÊÇmatlabÐÂÊÖ£¬Ïֵõ½Ò»×éÊý¾Ý£¨ÔÚ¸½¼þÖУ©£¬ÊÇÒ»¸ö40*40*40µÄ¿Õ¼äÄڵĸ÷¸öµãµÄÇ¿¶ÈÖµ£¬ÏÖÔÚÏë×öÓÉ(26,26,26)¡¢(20,20,20)ºÍ(38,10,22)Èý¸öµãÈ·¶¨µÄÆ½ÃæµÄµÈ¸ßÏß·Ö²¼Í¼£¬ÇëÎÊÈçºÎ×ö£¿
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>> [x y z]=meshgrid(1:40);
>> C=sin((x.^2+y.^2+z)/20);

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>> a=[20 20 20];
>> b=[26 26 26];
>> c=[38 10 22];

2£¬¼ÆËãx-zÆ½ÃæÓëÔ¤ÖÆÆ½ÃæµÄ¼Ð½Ç

>> der1=[0 1 0]; %x-zÆ½Ãæ·¨Ïà·½Ïò
>> der2=cross(b-a,c-a);%Ô¤ÖÆÆ½Ãæ·¨Ïò·½Ïò
>> der3=cross(der1,der2);%Á½Æ½Ãæ½»Ïß·½Ïò
>> the=dot(der2,der1)/sqrt(sumsqr(der1)*sumsqr(der2));%Á½Æ½Ãæ¼Ð½Ç


3£¬»­³öÕâÁ½¸öÆ½Ãæ£¬¿´¿´ÊDz»ÊÇÂäÔÚÄÇÈý¸öµãÉÏ£¿

>> [xx zz]=meshgrid(-10:50);yy=ones(size(xx));
>> mesh(xx,yy,zz),hold on;hsp = mesh(xx,yy,zz);
>> rotate(hsp,der3,the*180/pi,[1 1 1])%Ðý×ªÆ½Ãæ£¬È總¼þÒ»
>> scatter3(20,20,20)
>> scatter3(26,26,26)
>> scatter3(38,10,22)


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>> xd = get(hsp,'XData');
>> yd = get(hsp,'YData');
>> zd = get(hsp,'ZData');


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>> contourslice(x,y,z,C,xd,yd,zd)
>> hold on;
>> contourslice(x,y,z,C,[],1,[])
>> scatter3(20,20,20)
scatter3(26,26,26)
scatter3(38,10,22)

/////////////////////////////////////////////////////////////////////////////
2Â¥2009-10-14 19:16:43
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Originally posted by hitzhang at 2009-10-14 19:16:



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>> [x y z]=meshgrid(1:40);
>> C=sin(( ...

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wuqingming2003

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[path,fn]=uigetfile('*.txt','Open');
fp=fopen([fn,path],'r');
head=fscanf(fp,'%s',4);
data=fscanf(fp,'%f',[4,40*40*40]);
fclose(fp);
x=reshape(data(1,,[40,40,40]);
y=reshape(data(2,,[40,40,40]);
z=reshape(data(3,,[40,40,40]);
C=reshape(data(4,,[40,40,40]);
>> a=[20 20 20];
>> b=[26 26 26];
>> c=[38 10 22];
>> der1=[0 1 0]; %x-zÆ½Ãæ·¨Ïà·½Ïò
>> der2=cross(b-a,c-a);%Ô¤ÖÆÆ½Ãæ·¨Ïò·½Ïò
>> der3=cross(der1,der2);%Á½Æ½Ãæ½»Ïß·½Ïò
>> the=dot(der2,der1)/sqrt(sumsqr(der1)*sumsqr(der2));%Á½Æ½Ãæ¼Ð½Ç
>> [xx zz]=meshgrid(-10:50);yy=ones(size(xx));
>> mesh(xx,yy,zz),hold on;hsp = mesh(xx,yy,zz);
>> rotate(hsp,der3,the*180/pi,[1 1 1])%Ðý×ªÆ½Ãæ
>> scatter3(20,20,20)
>> scatter3(26,26,26)
>> scatter3(38,10,22)
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Originally posted by hitzhang at 2009-10-14 19:16:



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>> C=sin(( ...

4Â¥2009-10-15 12:12:23
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hitzhang

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kuhailangyu(½ð±Ò+1,VIP+0):лл²ÎÓë 10-15 16:01
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Originally posted by wuqingming2003 at 2009-10-15 12:12:
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[path,fn]=uigetfile('*.txt','Open');
fp=fopen([fn,path],'r');
head=fscanf(fp,'%s',4);
data=fscanf(fp,'%f', ...

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>> the=acos(dot(der2,der1)/sqrt(sumsqr(der1)*sumsqr(der2)));%Á½Æ½Ãæ¼Ð½Ç
5Â¥2009-10-15 15:42:33
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Originally posted by hitzhang at 2009-10-15 15:42:



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>> the=acos(dot(der2,der1)/sqrt(sumsqr(der1)*sumsqr(der2)));%Á½Æ½Ãæ¼Ð½Ç

[ Last edited by wuqingming2003 on 2009-10-15 at 16:45 ]
6Â¥2009-10-15 16:22:53
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hitzhang

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Originally posted by wuqingming2003 at 2009-10-15 16:22:
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Originally posted by hitzhang at 2009-10-15 18:38:

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8Â¥2009-10-15 23:16:29
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hitzhang

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Originally posted by wuqingming2003 at 2009-10-15 23:16:
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Originally posted by hitzhang at 2009-10-15 23:26:

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10Â¥2009-10-16 09:37:14
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