Is there any difference between rand(n,1) and unifrnd(0, 1, n, 1)?
13 次查看(过去 30 天)
显示 更早的评论
Is there any difference between
rand(n,1)
and
unifrnd(0, 1, n, 1)?
0 个评论
采纳的回答
Youssef Khmou
2014-9-18
They both generate sample from uniform distribution, unifrnd offers a possibility to enter the parameters while with rand you need to adjust them, example of uniform distribution of interval [5,10] with size of 400 :
h1=unifrnd(5,10,1,400);
h2=5+5*rand(1,400); % same pdf
3 个评论
更多回答(1 个)
Anne van Rossum
2016-6-29
There is less error checking in rand, which can be at times preferred... For example, if you need to generated random numbers between a and b, and it doesn't matter if a > b.
a = 5
b = -5
Then:
a+(b-a)*rand(1,400)
But you'll need to make sure a and b are properly ordered for unifrnd:
if (b < a)
[a, b] = deal(b, a);
end
unifrnd(a,b,1,400)
Or else your result will be a vector of NaNs.
0 个评论
另请参阅
Community Treasure Hunt
Find the treasures in MATLAB Central and discover how the community can help you!
Start Hunting!