Can't understand what rng(seed) does.

15 visualizaciones (últimos 30 días)
DM
DM el 20 de Abr. de 2015
Comentada: the cyclist el 20 de Abr. de 2015
I have come across this command in matlab. rng(seed). I used the help to understand what its means, and I still don't get it. Can anyone help me understand what it does?
rng Control the random number generator used by RAND, RANDI, and RANDN.
rng(SD) seeds the random number generator using the non-negative
integer SD so that RAND, RANDI, and RANDN produce a predictable
sequence of numbers.
THanks.

Respuestas (1)

the cyclist
the cyclist el 20 de Abr. de 2015
Editada: the cyclist el 20 de Abr. de 2015
The Random seed Wikipedia page might help you understand.
This page from stackoverflow may also help.
  2 comentarios
DM
DM el 20 de Abr. de 2015
Mu understanding after reading the page from stackoverflow is that you pick a seed and when you use it in rng, your will get the same sequence of numbers once you use rand, randi?
the cyclist
the cyclist el 20 de Abr. de 2015
Yes. You can think of the pseudorandom numbers from the generator as a long -- very long -- list of numbers that are uncorrelated with each other, and the seed determines where in that list you start.

Iniciar sesión para comentar.

Categorías

Más información sobre Random Number Generation en Help Center y File Exchange.

Etiquetas

Community Treasure Hunt

Find the treasures in MATLAB Central and discover how the community can help you!

Start Hunting!

Translated by