sorting and unsorting ?

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Muhammad
Muhammad 2021-9-14
回答： Image Analyst 2021-9-14
clc
clear all
a=magic(3)
[b,ind]=sort(a,1,'descend')
c(ind)=b;
i sorted the matrix but i want back the orignal matix a how i can do it

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Image Analyst
Image Analyst 2021-9-14
Try this:
a = magic(3)
[b, sortOrder] = sort(a, 1, 'descend')
c = zeros(size(b));
for col = 1 : size(b, 2)
c(:, col) = b(sortOrder(:, col), col);
end
c

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