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i want to get top right n x n matrix out of Nx N, I programmed it in following way but i got answer two times. so what is my mistake?

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Naitikkumar Darji
Naitikkumar Darji 2018-11-19
编辑： James Tursa 2018-11-19
a = top_right(N,n)
[j , k] = size(N);
a = N([1:1:j-(j-n) , 1:1:k-(k-n)],1:n);
end

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回答（1 个）

James Tursa
James Tursa 2018-11-19
编辑：James Tursa 2018-11-19
For "top right corner," the column indexing should not start at 1. E.g.,
a = N(1:n,end-n+1:end); % <-- Back off from end instead of starting from 1
But you might want to add code to cover the cases where the dimensions of N are smaller than n.

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