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Array manipulation in calculator

manudupouy

Hello,

I need to manipulate arrays with expression editor of the calculator. But I did not succeed.

I made a simple simulation of Id=f(Vgs) para um transistor NMOS. I put the result of Id in a variable: Id = i("/V1/PLUS" ?result "dc").

There is 50 points of simulation. How can I keep only the last 30 points for example.

I tried Id_reduc = Id[20:50], but it don't work.

I know it exists clip function, but for me, it would be easier to directly manipulate an array with its reference.

Thanks in advance

Emmanuel

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  • Andrew Beckett

    It's not an array. There are arrays in SKILL and there's no array slice operator (arrays aren't used very often anyway) - but either way waveform objects are not arrays.

    The reason being that waveforms often have irregular x-axis ranges and they consistent of both an x vector and a y vector.

    It would be possible to create a function to do this (I could write one easily enough), but I'm really not convinced you want to do that. Why not just use the clip function? That's pretty easy to use and then is independent of the actual steps you took in the simulation.

    Regards,

    Andrew.

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  • Andrew Beckett

    It's not an array. There are arrays in SKILL and there's no array slice operator (arrays aren't used very often anyway) - but either way waveform objects are not arrays.

    The reason being that waveforms often have irregular x-axis ranges and they consistent of both an x vector and a y vector.

    It would be possible to create a function to do this (I could write one easily enough), but I'm really not convinced you want to do that. Why not just use the clip function? That's pretty easy to use and then is independent of the actual steps you took in the simulation.

    Regards,

    Andrew.

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