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Make loop more efficient

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Panos Kerezoudis
Panos Kerezoudis 2023-1-23
评论： Panos Kerezoudis 2023-1-23
Hi! I am new to Matlab and I am currently going through coding exerices to become more skilled at it.
I would appreciate any help with making my code below more efficient:
---I have an nxn matrix A and I want to increase all elements below a specific cutoff (let's say 0.5) by a certain value (let's say 1).
This is what I have so far (which thankfully works, but feels bulky).
Thanks!
for i=1:numel(A)
if A(i) < 0.5
A(i) = A(i) +1;
end
end
disp(A)

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采纳的回答

Matt J
Matt J 2023-1-23
编辑：Matt J 2023-1-23
Ran in:
Simpler:
A=rand(5),
A = 5×5
0.7601 0.9824 0.6751 0.1206 0.7516 0.8308 0.6818 0.7500 0.7429 0.8306 0.7416 0.4895 0.6510 0.5861 0.3351 0.4752 0.9935 0.6044 0.1761 0.5067 0.9184 0.4375 0.2523 0.3061 0.4270
I=(A<0.5);
A(I)=A(I)+1,
A = 5×5
0.7601 0.9824 0.6751 1.1206 0.7516 0.8308 0.6818 0.7500 0.7429 0.8306 0.7416 1.4895 0.6510 0.5861 1.3351 1.4752 0.9935 0.6044 1.1761 0.5067 0.9184 1.4375 1.2523 1.3061 1.4270

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