SIMULINK: Set a random seed in the Block Parameters: Random Number GUI

SIMULINK

How do I set a random seed in the user GUI for a random number block? (So I get a random number at each sim run)

Thanks

Answer 1

[Suman]

Hi Marie,

You can achieve this in two very simple ways:

1. You can set the value of the Seed parameter in the block dialog to be randi(5). This way each time the model is simulated, the seed value will be initialized to a random integer. Note that I have used the randi() function as an example, you may explore other available function as per your requirement.
2. Another option is to use a variable in the base or model workspace as the seed value and then update its value by adding a StartFcn callback on the given block. This callback function will execute at the start of every simulation, so you again get a random value for each simulation.