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Making random to work like randi

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Snoopy
Snoopy 2025-8-4
Locked: Matt J 2025-8-4
I have this code
idx = randi(N_clusters,N_clusters,1);
but I want to use the random function to achieve the same output. I do not get into why I want to use the random function but it is important for my work flow. So then I tried
pd = makedist('DiscreteUniform','Lower',1,'Upper',N_clusters);
idx = random(pd,N_clusters,1);
But MATLAB gives an error that "DiscreteUniform" is not recognized. What is my best alternative usinf the random function, if I stll can.

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采纳的回答

Paul
Paul 2025-8-4
Ran in:
I wonder why makedist doesn't support Uniform Distribution (Discrete).
But random can be called with that distribution.
N_clusters = 10;
rng('default');
idx = randi(N_clusters,N_clusters,1)
idx = 10×1
9 10 2 10 7 1 3 6 10 10
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rng('default');
random('Discrete Uniform',N_clusters,N_clusters,1)
ans = 10×1
9 10 2 10 7 1 3 6 10 10
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  1 个评论
Snoopy
Snoopy 2025-8-4
This
idx = random('Discrete Uniform',N_clusters,[N_clusters 1]);
seems to work. I wonder about the makedist too. This caused the whole confusion on my end.

更多回答（1 个）

Matt J
Matt J 2025-8-4
编辑：Matt J 2025-8-4
idx = floor( (N_clusters-1)*rand(N_clusters,1) )+1
  11 个评论
显示 9更早的评论
Snoopy
Snoopy 2025-8-4
Yes, that is the problem and hence I am seeking a solution to that, using still the random function.
Matt J
Matt J 2025-8-4
编辑：Matt J 2025-8-4
Ran in:
AI suggested
But that's not what I suggested to you earlier. I suggested 'Uniform'
N_clusters = 10;
rng('default');
pd = makedist('Uniform','Lower',1,'Upper',N_clusters+1);
idx = floor(random(pd,N_clusters,1))
idx = 10×1
9 10 2 10 7 1 3 6 10 10
<mw-icon class=""></mw-icon>
<mw-icon class=""></mw-icon>
●

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