MATLAB: Please help, indexing of ND-Dimensional matrices

indexingnd-dimensionalreshape

Hey,

I'm stuck on this stupid thing and i know is obvious.

I have a 3D matrix of A = rand(5,4,3) and i want to change their shape from 5 x 4 matrix to 10 x 2 matrix.

I have tried B = reshape(A,10,2) which does not work at all then I also tried B = reshape(A,[],2) which does the job but it merges the matrix.

But how do i make it work???

Thank you!

Best Answer

reshape(A,10,2,3)

But it really depends on the order that you want B to have, which you did not tell us. You might need to use permute too.

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Change the following lines in your code to use ./ instead of /

    tan3a = (-E + sqrt(E.^2 - (4 .* D .* F)))./ (2 .* D);% note ./
    tan3b = (-E - sqrt(E.^2 - (4 .* D .* F)))./ (2 .* D);
    tan4a = (-B + sqrt(B.^2 - (4 .* A .* C)))./ (2 .* A);
    tan4b = (-B - sqrt(B.^2 - (4 .* A .* C)))./ (2 .* A);

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