Variable with limited decimal number.

Igor Jobim
Igor Jobim Altair Community Member
edited October 2022 in Community Q&A

Hi.
I use optfeko to optimize a model.
I get a pretty large number for the variable.
How can I set the variable to something like 100.00?
Thank you for any help.

 

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Answers

  • Torben Voigt
    Torben Voigt
    Altair Employee
    edited October 2022

    Hi @Igor Jobim ,

    you can achieve this by using "Grid search":

    image

    In the attached example (Feko 2022.1.2) I optimize the length of a dipole, where the corresponding variable may only take values = -100 mm to 100 mm in 10 mm steps. For the grid search I therefore choose 21 points.

    Hope this helps!

    Best regards,
    Torben

  • Igor Jobim
    Igor Jobim Altair Community Member
    edited October 2022

    Thanks for your reply @Torben Voigt.
    I read the manual to better understand how "Grid search" works.
    The model has four variables to be analyzed in the optimization. Immediately when starting optfeko appears:
    "WARNING 21327: Grid Search may be inefficient due to the large number of analyzes requested".
    Maybe I didn't explain correctly what I need.
    I want the variable to receive a short number such as 101.64 or 101.6 instead of 1.016419981e+02.
    Thank you again.

  • Torben Voigt
    Torben Voigt
    Altair Employee
    edited October 2022

    Hi @Igor Jobim,

    Unfortunately there is no possibility in Feko's optimizer. Maybe HyperStudy (https://www.altair.com/hyperstudy/) is something for you? 

    Best regards,
    Torben

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