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POSetting custom random number generator seed even when using past SimState in Simulink
 

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  1. POSetting custom random number generator seed even when using past SimState in Simulink
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    <p>I have a problem in that I need to run multiple simulations using a previously saved SimState with different randomness seeds. I haven't managed to get this to work yet.</p> <p>I have tried using</p> <pre><code>set_param('mod/Random Number', 'Seed', '3324') </code></pre> <p>and this works if I don't use a previously saved SimState, but as soon as I try this with a SimState all simulations still end up with the same random numbers (I guess that the newly set seed is being ignored and instead the seed saved in the SimState is being used, although I have tried looking at the SimState data structure and I couldn't really figure out if it even contains the past seed and if it does how I am supposed to go about changing it).</p> <p>What would be my best approach here? Ideally I would simply call a single function (shuffle_seeds) and all seeds in all random block would be reset to something new.</p> <p><em>Note: my temporary solution is to use a custom input port (at root level) and then giving that input uniformly or normally distributed numbers for each timestep, but this is not a very nice solution (and quite tricky to get to work as the values are interpolated if a sampling time smaller than 1 is used in any other block).</em></p>
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    1. USo1iver
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    1. CODo you need some help on how to define a random number generator in Matlab?
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      1. USAndrey Rubshtein
    2. CONo, I need help with changing Simulink Random Number Generator seeds whilst using past saved SimState (past simulation state).
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      1. USo1iver
 

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