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内容简介作者简介 - 科学与工程计算系

内容简介作者简介 - 科学与工程计算系

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【例 2.11.3-4】“孤维”的撤消和降维。<br />

B=cat(4,A(:,:,1),A(:,:,2),A(:,:,3))<br />

B(:,:,1,1) =<br />

1 3 5<br />

2 4 6<br />

B(:,:,1,2) =<br />

7 9 11<br />

8 10 12<br />

B(:,:,1,3) =<br />

13 15 17<br />

14 16 18<br />

size(B)<br />

ans =<br />

2 3 1 3<br />

C=squeeze(B)<br />

C(:,:,1) =<br />

1 3 5<br />

2 4 6<br />

C(:,:,2) =<br />

7 9 11<br />

8 10 12<br />

C(:,:,3) =<br />

13 15 17<br />

14 16 18<br />

size(C)<br />

ans =<br />

2 3 3<br />

【例 2.11.3-5】赋“空阵”值操作。<br />

A=reshape(1:18,2,3,3)<br />

A(:,:,1) =<br />

1 3 5<br />

2 4 6<br />

A(:,:,2) =<br />

7 9 11<br />

8 10 12<br />

A(:,:,3) =<br />

13 15 17<br />

14 16 18<br />

A(:,2:3,:)=[]<br />

B=A;<br />

A(:,:,1) =<br />

1<br />

2<br />

A(:,:,2) =<br />

7<br />

8<br />

A(:,:,3) =<br />

13<br />

14<br />

size(A)<br />

ans =<br />

2 1 3<br />

A_1=squeeze(A)<br />

15

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