Fitting a curve then subtracting that curve

[Alex H]

I'm trying to fit a polynomial curve to my data and then subtract it from the data. Each set of data I have has a slightly different background so I want to fit a function to each one and then subtract the individual background from each. If possible, I would like to make a script for it so I can batch process the data since I can have many data sets per experiment. I have close to zero background in programming so it might be difficult for me which is why I need help. Below is me figuring out how to write a script for making a polynomial for each data set and fitting it. I just don't know the rest of it. Would anyone know how to subtract a function from your data set and each data set has a different function to subtract? From there, I will hopefully be able to figure out the rest of the data analysis. Thank you to anyone who can help.

@*: guess Polynomial6

@*: fit

[Alexander Selyutin]

If you use only one function to use that.
@*: guess Polynomial6

@*: fit

@*: Y=Y-F(x)

if you use several functions and only one of that you want to subtract you should use a half automatic method.

@*: guess Polynomial6

@*: fit
create function that fit your "information data" (you can use another function type or more functions with another initial fit parameters)

@*: guess PseudoVoigtA(height=~397.3, center=~39.99, area=~460.868, hwhm=~0.58)

@*: guess AnotherFunctions

@*: fit

after that you should remove "information" functions by using mouse in functions panel in GUI - that is easy because functions placed with order of creation

and remove background

@*: Y=Y-F(x)

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Regards,

Alexander Selyutin

[Alex H]

Alexander,

Would I be able to write it into the script to delete that polynomial function once I am done with it? 

[Alexander Selyutin]

I dont know how to remove functions by batch processing, only by name "delete @1, @2 ,@3 "etc If functions are created by script it's not difficult to use mouse selection and deleting

чт, 13 авг. 2020 г. в 05:51, Alex H <dabrai...@gmail.com>:

Alexander,

Would I be able to write it into the script to delete that polynomial function once I am done with it? 

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Regards,

Alexander Selyutin