Combining elements from two arrays

Question

Laura 2022-10-19

0
链接

此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/1830958-combining-elements-from-two-arrays

评论： Laura 2022-10-20

采纳的回答： Torsten

I have two arrays to start with:

B = 0.8147 0.6324 0.9575

0.9058 0.0975 0.9649

0.1270 0.2785 0.1576

0.9134 0.5469 0.9706

and

A = 0.9572 0.1419 0.7922

0.4854 0.4218 0.9595

0.8003 0.9157 0.6557

The array i want to end with is:

C = 0.4854 0.4218

0.9572 0.1419

0.1576 0.9649

So essentially i want the 2nd, 5th, 1st and 4th element of A and the 11th and 10th element of B.

I've managed to extract the elements from A that i need using the code >> C = A([2 5 ; 1 4]) but i cannot work out how to then add the 11th and 10th element of B.

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Answer 1

Torsten 2022-10-19

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https://ww2.mathworks.cn/matlabcentral/answers/1830958-combining-elements-from-two-arrays#answer_1079183

在 MATLAB Online 中打开

A = [0.9572    0.1419    0.7922
    0.4854    0.4218    0.9595
    0.8003    0.9157    0.6557];
B = [0.8147    0.6324    0.9575
    0.9058    0.0975    0.9649
    0.1270    0.2785    0.1576
    0.9134    0.5469    0.9706];
C = [A(2,1:2);A(1,1:2);B(3,3),B(2,3)]
C = 3×2
    0.4854    0.4218
    0.9572    0.1419
    0.1576    0.9649

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Laura 2022-10-20

Thank you, this works

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Answer 2

AH 2022-10-19

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链接

此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/1830958-combining-elements-from-two-arrays#answer_1079188

在 MATLAB Online 中打开

You may want to try this

A = [0.9572, 0.1419, 0.7922;
     0.4854, 0.4218, 0.9595;
     0.8003, 0.9157, 0.6557];
B = [0.8147, 0.6324, 0.9575;
     0.9058, 0.0975, 0.9649;
     0.1270, 0.2785, 0.1576;
     0.9134, 0.5469, 0.9706];
C = [A([2 5;1 4]);B([11 10])]
C = 3×2
    0.4854    0.4218
    0.9572    0.1419
    0.1576    0.9649