Create an array containing indeces and value

2022 4 20
2 个回答
更新时间：2022 4 21
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Hi everyone,
I have a problem that I don't know how to solve. How Can I create an array C from two matrix A (50X100)and B (50X100) where the matrix B contains the x coordinates of the value contained in Matrix A (meaning that to the value in the first row A correspond the coordinates in the first row B)?
Thank you so much

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Matt J
Matt J 2022-4-21
You haven't described the relationship that C should have to A and B.
Paola
Paola 2022-4-21
yeah, I tought crating a cell array C with all of my scaled curves would be a good idea
Paola
Paola 2022-4-21
Yeah I need to plot it but I also need to do other operations with the data. So I need to have them saved in the workspace.
Thanks
Matt J
Matt J 2022-4-21
They already are saved in the workspace as A and B.
Paola
Paola 2022-4-21
I need to the cross correlate the "combined" vectors with another vector. I don't know how to do it if they are separated.

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回答（2 个）

Matt J
Matt J 2022-4-20
编辑：Matt J 2022-4-20
Ran in:

0 个投票

Ran in:
Would this be a simplified example fo what you mean?
[A,B]=ndgrid(1:5)
A = 5×5
1 1 1 1 1 2 2 2 2 2 3 3 3 3 3 4 4 4 4 4 5 5 5 5 5
B = 5×5
1 2 3 4 5 1 2 3 4 5 1 2 3 4 5 1 2 3 4 5 1 2 3 4 5
C=A.^2+B.^2
C = 5×5
2 5 10 17 26 5 8 13 20 29 10 13 18 25 34 17 20 25 32 41 26 29 34 41 50

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Paola
Paola 2022-4-21
HI Matt,
thank you for your answer. What I am trying to do is scaling a curve. I have a matrix A in which each row contains the values of a curve and B is another matrix in which each row contains the x-value of the curves.
I want to combine the two.
Thanks

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Matt J
Matt J 2022-4-21

0 个投票

I need to the cross correlate the "combined" vectors with another vector. I don't know how to do it if they are separated.
xcorr2() or imfilter() should do that directly.

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Paola
Paola
2022-4-20

回答：

Matt J
Matt J
2022-4-21

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