Generate random numbers matrix with different probabilities
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How do I generate a 15x20 matrix with random numbers between -5 and 23 but the negative numbers (Including 0) are twice as likely to appear than positive numbers?
回答（1 个）
Ameer Hamza
2020-10-4
编辑：Ameer Hamza
2020-10-4
This is one way
candidates = [-5:0 -5:0 1:23]; % twice as many candidates from -5 to 0
idx = randi(numel(candidates), 15, 20);
x = candidates(idx);
To see if it really work, create a large matrix x and see the histogram of its values
candidates = [-5:0 -5:0 1:23]; % twice as many candidates from -5 to 0
idx = randi(numel(candidates), 100, 200);
x = candidates(idx);
histogram(x(:))
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2020-10-4
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