How to extract odd numbered elements.

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Rares-Ioanid
Rares-Ioanid 2023-5-22
回答： KSSV 2023-5-22
Generate a population of 10000 normally distributed elements with mean 2 and dispersion 3. Generate 1000 indexes at random from which only the odd ones are chosen to create a data sample.
Any idea or solution is helpful. My main issue is that I do not know how to extract only the odd numbered elements.

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回答（1 个）

KSSV
KSSV 2023-5-22
Ran in:
A = 1:10 ;
% Pick only odd elements
idx = mod(A,2)~=0 ;
A(idx)
ans = 1×5
1 3 5 7 9

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