Create an array containing indeces and value

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

[Matt J]

You haven't described the relationship that C should have to A and B.

[Paola]

yeah, I tought crating a cell array C with all of my scaled curves would be a good idea

[Paola]

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]

They already are saved in the workspace as A and B.

[Paola]

I need to the cross correlate the "combined" vectors with another vector. I don't know how to do it if they are separated.

Answer 1

[Matt J]

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

[Paola]

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

Answer 2

[Matt J]

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.