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How to clip the calculator dft() output ?

lahsivece

Hi ,

I am trying to clip the calculator dft function output to extract dft peak value  in that frequency range. Is it possible ? If yes , how to go ahead with this .

How to get  y value at a particular frequency  in the dft plot in ocean?

Please advise.

Regards

Vishal

 

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  • Vishal,

    Finding the ymax of the real and the ymax of the imaginary is definitely wrong. There's no guarantee they will be at the same frequency, so the result you get is potentially completely wrong.

    It would be batter to use:

    ymax_tot=ymax(mag(clip_vop_dft))

    However, I don't see why value shouldn't work (it does for me). I'd do:

    mag(value(vop_dft 1.191G))

    The mag function essentially the abs() - which does the sqrt(real**2+imag**2).

    Regards,

    Andrew.

Reply

  • Vishal,

    Finding the ymax of the real and the ymax of the imaginary is definitely wrong. There's no guarantee they will be at the same frequency, so the result you get is potentially completely wrong.

    It would be batter to use:

    ymax_tot=ymax(mag(clip_vop_dft))

    However, I don't see why value shouldn't work (it does for me). I'd do:

    mag(value(vop_dft 1.191G))

    The mag function essentially the abs() - which does the sqrt(real**2+imag**2).

    Regards,

    Andrew.

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