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  3. Getting the time point in the calculation

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Getting the time point in the calculation

liorscotland
liorscotland over 8 years ago

hello all.
I am looking to create a waveform. How do I use the x point value as a point?
I.e.:
wave(time) = average( VT(net1) time )

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  • Andrew Beckett
    Andrew Beckett over 8 years ago

    I was a bit lazy. It worked because the first value ends up being NaN (actually -nan) and so doesn't get plotted. What you could do is:

    procedure(CCFcumulativeAverage(sig)
      let((new)
        new=iinteg(sig)/(xval(sig)-abFirstX(sig))
        drSetElem(drGetWaveformYVec(new) 0 abFirstY(sig))
        new
      )
    )

    I have not attempted to set the units, axis names, expression etc on the waveform object - this is just to show the principle of how it could be done (the above should work though). You can't use your conditional approach because it's going to be comparing the wrong types of object. Also, you asked for the first value of the output to be the first value of the input waveform - this function will now do that.

    Regards,

    Andrew.

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  • Andrew Beckett
    Andrew Beckett over 8 years ago

    I was a bit lazy. It worked because the first value ends up being NaN (actually -nan) and so doesn't get plotted. What you could do is:

    procedure(CCFcumulativeAverage(sig)
      let((new)
        new=iinteg(sig)/(xval(sig)-abFirstX(sig))
        drSetElem(drGetWaveformYVec(new) 0 abFirstY(sig))
        new
      )
    )

    I have not attempted to set the units, axis names, expression etc on the waveform object - this is just to show the principle of how it could be done (the above should work though). You can't use your conditional approach because it's going to be comparing the wrong types of object. Also, you asked for the first value of the output to be the first value of the input waveform - this function will now do that.

    Regards,

    Andrew.

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