random number generating problems

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alexaa1989
alexaa1989 on 19 Aug 2014
Commented: alexaa1989 on 21 Aug 2014
hi everyone I have written an algorithm in which there is a part that has to produce random numbers like this:
a=randi(10,1,4)
b=randi(10,1,4)
c=randi(10,1,4)
I need it to produce different sets of numbers everytime I run the algorithm but it uses the same sets of numbers everytime
can anyone help?

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Answers (1)

Guillaume
Guillaume on 19 Aug 2014
In all likelyhood, you're seeding the random number generator with a fixed seed somewhere before calling randi.
Look for a rng(...) instruction and remove it, or insert a rng('shuffle') before calling randi. rng('shuffle') seeds the generator with the current time.
  2 Comments
Iain
Iain on 19 Aug 2014
Edited: Iain on 19 Aug 2014
If you aren't setting the random number generator with ANY seed, try ensuring that you provide one based on say, the time of day.
alexaa1989
alexaa1989 on 21 Aug 2014
it isn't working with rng and now it is producing not feasible solutions

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