How to substract baseline from signals

[Yee Yan Tay]

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?

[Yee Yan Tay]

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?

[Bernhard Kantz]

You can use the [b]Approximation Analysis Object[/b] with the intial function C + X. After that you can subtract the result from the signal.
Example:
[code]
Dim _c = Approximation(Signal, APPROX_C + APPROX_X)
Dim approx = Signal(_c[0] + _c[1] * (Signal.X), Signal.X)
Signal – approx
[/code]

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