generating random numbers from a range
1 visualización (últimos 30 días)
Mostrar comentarios más antiguos
Hello, I want to generate random numbers from a range. Example I want 1000 random numbers in the range from 1000 to 3000. How can I do this in matlab, because what I could get using the rand command is only in the range [0,1]. Thanks!
Edit Nr. 1 I think the rand command gives UNIFORMLY distributed random numbers. Is there a way to generate samples from NORMALLY distributed functions ( randn command), but instead of mean and std, I want to enter initial value and ranges. I want this for a stochastic modelling (sensitivity analysis) purpose.
0 comentarios
Respuestas (2)
Andrei Bobrov
el 13 de Jun. de 2012
out = 1000 + 2000*rand(1000,1);
OR
use function unifrnd from Statistics Toolbox
out = unifrnd(1000,3000,1000,1);
2 comentarios
Andrei Bobrov
el 13 de Jun. de 2012
k = randn(1000,1);
km = min(k);
out = (k-km)/(max(k)-km)*2000+1000;
hist(kn,1000:100:3000)
But this is distribution - not normal distribution
Walter Roberson
el 13 de Jun. de 2012
Normal distribution is, by definition, infinite tail on both sides. If you want your generated values to be confined to a finite range, you do not have a normal distribution.
Perhaps you want a beta distribution.
0 comentarios
Ver también
Categorías
Más información sobre Random Number Generation en Help Center y File Exchange.
Community Treasure Hunt
Find the treasures in MATLAB Central and discover how the community can help you!
Start Hunting!