how to find the indices after sorting columns of a matrix
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Suppose i have 4x4 matrix A with different integers. I sort each column of the matrix i.e. B= sort (A,'ascend'). Now i want matrix C which should show changed indices of matrix A after sorting.
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SALAH ALRABEEI
2022 年 5 月 31 日
If I got you correctly, I think you want you want this
clear
A = magic(4)
[n,m]=size(A)
[As,Cur_ind]=sort(A,'ascend')
Org_ind = reshape(1:n*m,n,m)
bb=[1:n].*ones(n,m)
C = reshape(diag(Org_ind(Cur_ind,bb)),n,m)
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