Exponential Distribution for random number
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Hi, How can i generate an exponential distributed random integer from the interval [1 16]. Thank you so much.
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Star Strider
2015-11-7
1 个投票
I need a bit of clarification. Are the means on the interval [1 16], do you want the output to be on the interval 1 16, or a row vector of 16 exponentially distributed random variables? You have to specify a mean (or an array of means) in the second and third instances. (You can do any of these easily enough, but the output are no longer strictly exponentially distributed in the second instance.)
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Aftab Ahmed Khan
2015-11-7
Star Strider
2015-11-7
You have to specify a mean. After that, the rest is easy:
mu = 10; % Specify Mean
rnexp = exprnd(mu, 1, 100); % Generate Random Vector
fixlim = fix(rnexp(rnexp>=1 & rnexp<=16)); % Round & Limit Magnitude
I generated a vector of them here, which has the advantage of your being able to then use a randi call to randomly select one of them, by selecting the index:
exrnd = randi(length(fixlim)); % Selects One Element Of ‘fixlim’
This should do what you want.
Aftab Ahmed Khan
2015-11-7
Star Strider
2015-11-7
Your non-uniform random variate question turned out to be much more involved than I can answer here, and even Wikipedia avoids it. The short answer appears to be that it is any distribution that is not uniform, not a specific distribution named ‘non-uniform’.
I did an online search to be certain. A comprehensive discussion is at NON-UNIFORM RANDOM VARIATE GENERATION. (Other discussions I found online are as involved.) The same author has published a book on the subject.
Aftab Ahmed Khan
2015-11-7
Star Strider
2015-11-7
My pleasure.
Thank you. You, too!
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