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Random specified numbers.

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Eivind Jamessen
Eivind Jamessen 2020-2-21
评论： Giuseppe Inghilterra 2020-2-21
Hi, I want to print random numbers from 1 to 100, but i want to specifiy that most of the numbers should be around 20. In other words, it is most likely to get 20, but other numbers can also occur. Is this possible?

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回答（1 个）

Giuseppe Inghilterra
Hi,
you can use randsample matlab function. (Reference: https://www.mathworks.com/help/stats/randsample.html).
y = randsample(n,k,true,w);
where:
  • n is the maximum integer random value generated;
  • k is number of random values that you want generate;
  • w is weigth vector that contains n weights.
In your case n = 100 and you must define w vector with 100 weights (value 20 will be more weighted) such that weight sum is 1.
Hope this helps.
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Adam
Adam 2020-2-21
e.g.
x = 1:100;
w = exp( -( x - 20 ).^2 / 1000 );
w = w / sum( w );
Giuseppe Inghilterra
Giuseppe Inghilterra 2020-2-21
Adam's example is a good one to follow in order to create in a easy and fast way weight vector.

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