Feko: Is there a way to merge results of two simulations with overlapping frequencies?

tobias_from_edag
tobias_from_edag Altair Community Member
in Community Q&A

Hello,

my specific problem is that I have a fairly slow simulation for which I have computed results, and now I wish to combine additional results at different frequency samples with those. For example my original simulation had samples at 1-100MHz at 1MHz sample distance, and the second one had samples from 40-50MHz at 0.1 MHz sampling. I am primarily concerned with nearfield and farfield results.
Adding both to a graph individually does not work for surface graphs, and also more complex post processing is broken.

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Answers

  • Torben Voigt
    Torben Voigt
    Altair Employee

    Hi @tobias_from_edag ,

    That is an interesting question. I could imagine that this is possible with the help of scripting and will ask the development.

    Best regards,
    Torben

  • Zeina
    Zeina
    Altair Employee

    Hi @tobias_from_edag ,

    Is my understanding correct, that you need to manipulate your results in 2D surface plots? If it is the case, that type of plot only allows one set of 2D results (at a given frequency) to be plot in one graph; of which I suppose you are already aware. So, merging multiple frequency results from two sets into one set of result, won't change much of what you can do in 2D plots.

    Nevertheless, if you need that for Cartesian graphs, then I understand the need to merge all available frequency sets.

    Best,

    Zeina

  • tobias_from_edag
    tobias_from_edag Altair Community Member

    Hi Zeina.

    I am creating 2d surface plots with the frequency as one of the axes.

    Though currently I am also concerned with other post processing scripts.

    Actually, now that i think about it, the actual best case would be a way to combine str files, so I can create new results by resuming a calculation from the combined str file. But I assume that would be an unrealistic hope.

  • Zeina
    Zeina
    Altair Employee
    edited February 17

    Thanks @tobias_from_edag I understand better now your setting and need of actually checking the variations of a vector of results over frequency.

  • Torben Voigt
    Torben Voigt
    Altair Employee

    Hi @tobias_from_edag ,

    you could also define the frequency points as desired in CADFEKO. Ideally, you should import them directly from a .txt file, which makes it easier:

    image.png

    .txt file with your desired frequencies is attached.

    frequencies.txt

    Best regards,
    Torben

  • tobias_from_edag
    tobias_from_edag Altair Community Member
    https://community.altair.com/discussion/comment/190025#Comment_190025

    I will be doing that for further calculations. But I currently have the situation that I already have the results of several days of simulation time with rough calculation, and I want to avoid rerunning them.

    Also I want to future proof this calculation, so that I can later add additional points if it turns out to be necessary.

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