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Converting Waveform to list

SavinoP

Hi, 

I am a SKILL newbie and I need to covert a waveform to a list, but I can't.

I tried to use "abWaveToList" procedure, as read in other posts, but it doesn't seem to work. I've written this code:

res = abWaveToList(Wave ?transpose t)

and the content of res variable is:


I guess the problem isn't due to the Waveform variable, because I can see it using plot fuction. I'm using IC6.1.7-64b.500.15.

I really appreciate all the help I can get.

Regards,
Savino

Parents

  • Hi Savino,

    My guess is that the waveform is actually a family of curves, not a single waveform. abWaveToList (which I wrote) was only designed with single (leaf) waveforms in mind.

    What is producing the waveform? What is the simulation setup and how are you getting the waveform in the first place?

    Regards,

    Andrew.

  • in reply to Andrew Beckett

    Hi Andrew,

    Thank you so much for your reply.

    The Waveform is the results of an Hysteresis sweep DC simulation with only one corner enabled (Nominal corner is disabled).  I've written a new procedure for the DC simulation that returns the Waveform.

    The syntax I used at the end of the procedure is:

      Wave = v("/Vout")
      Wave  

    where Vout is the signal I need. I don't know if this could be a problem.

    Regards,
    Savino

  • in reply to SavinoP

    Hi Savino,

    Are you using the “Hysteresis Sweep” checkbox on the dc analysis, or are you simulating the hysteresis in some other way (I’m assuming you’re using spectre). The Hysteresis sweep produces a single waveform (not a family).

    Probably would have to have a clearer example of precisely what you're doing in your script - perhaps this would be better handled via customer support?

    Regards,

    Andrew.

Reply
  • in reply to SavinoP

    Hi Savino,

    Are you using the “Hysteresis Sweep” checkbox on the dc analysis, or are you simulating the hysteresis in some other way (I’m assuming you’re using spectre). The Hysteresis sweep produces a single waveform (not a family).

    Probably would have to have a clearer example of precisely what you're doing in your script - perhaps this would be better handled via customer support?

    Regards,

    Andrew.

Children
  • in reply to Andrew Beckett

    Hi Andrew, 

    Yes, I am using the "Hysteresis Sweep" checkbox with Spectre simulator. 
    In any case, as you have supposed, the waveform is a family of curves and I solved this problem using famValue() function:    

    foreach(sweepValue famGetSweepValues(v("Vout"))   
       Wave = famValue(v("Vout") sweepValue))  

    So, in this way I managed to use abWaveToList() function and convert the waveform in a list. This code works, but I don't think it is the best method.

    Thanks for your time and your help.

    Regards,
    Savino

  • in reply to SavinoP

    Hi Savino,

    That's not unreasonable. I don't really know what you're doing with the results of abWaveToList, so whether there's a better way, I can't comment.

    Regards,

    Andrew.

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