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How to substract baseline from signals

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  • November 18, 2006 at 9:54 pm #12507
    Yee Yan TayYee Yan Tay
    Member

    Hi, i am getting some raman spectroscopy signal,i only found baseline in curve fitting, but is there standalone function to do that. This is because i would like to create a baseline for the background signal and substract it. Will the lowerenvelope function or the spline function helps?

    November 18, 2006 at 9:54 pm #8170
    Yee Yan TayYee Yan Tay
    Member

    Hi, i am getting some raman spectroscopy signal,i only found baseline in curve fitting, but is there standalone function to do that. This is because i would like to create a baseline for the background signal and substract it. Will the lowerenvelope function or the spline function helps?

    November 20, 2006 at 9:55 pm #8813
    Bernhard KantzBernhard Kantz
    Participant

    You can use the Approximation Analysis Object with the intial function C + X. After that you can subtract the result from the signal.
    Example:

    
Dim _c = Approximation(Signal, APPROX_C + APPROX_X)
Dim approx = Signal(_c[0]  + _c[1] * (Signal.X), Signal.X)
Signal - approx

    support@weisang.com

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