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  3. Problems with expressions in Monte Carlo

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Problems with expressions in Monte Carlo

Karo
Karo over 15 years ago
I am trying to run some Monte Carlo simulations and I am taking some expressions of some the plots. The simulations seem to give the same results for the expressions. Is there something I am not taking into consideration? I appreciate your help.
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  • Andrew Beckett
    Andrew Beckett over 15 years ago

    Karo,

    The reason is that when you run Monte Carlo, the results go into a different database name with a name specific to the fact that it's within a monte carlo analysis, and which iteration it is on. The "aliased" name always points to the "current" point in this sweep. A name such as "tran-tran" is actually referring to a specific database, which in this case is the nominal run. To avoid you having to know which specific database to calculate with (which changes at each monte carlo point), the idea is that expressions should refer to the aliased result name (e.g. 'tran, 'ac, etc). Being able to refer to "tran-tran" allows you to have an expression which (say) finds the difference between the current iteration and the nominal.

    This is what the data name aliasing explains - essentially the solution I've given is using the aliased name.

    Regards,

    Andrew.

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  • Andrew Beckett
    Andrew Beckett over 15 years ago

    Karo,

    The reason is that when you run Monte Carlo, the results go into a different database name with a name specific to the fact that it's within a monte carlo analysis, and which iteration it is on. The "aliased" name always points to the "current" point in this sweep. A name such as "tran-tran" is actually referring to a specific database, which in this case is the nominal run. To avoid you having to know which specific database to calculate with (which changes at each monte carlo point), the idea is that expressions should refer to the aliased result name (e.g. 'tran, 'ac, etc). Being able to refer to "tran-tran" allows you to have an expression which (say) finds the difference between the current iteration and the nominal.

    This is what the data name aliasing explains - essentially the solution I've given is using the aliased name.

    Regards,

    Andrew.

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