Baseline Correction of IR Spectra

What's the MATLAB function for baseline correction of IR spectra? I have gone through the Signal Processing Toolbox documentation, but I cannot find the specific function. Below is an image of what I would like to accomplish.

Answer 1

[Star Strider]

It is not possible to provide specific code without your data.

See for example: Raman spectra background removal and Shifting Baselines of Raman Spectra for examples.

[smsinks]

Hi Star,

Thanks for the response.

Apologies for not being clear.

I am looking for a MATLAB built-in function. So I can also read the documentation and the math behind the methods. Also, I was optimistic that the built-in function would have more options (or input parameters) that offer added flexibility and fine-tuning capabilities.

I have previously tried the methods at the links that you have provided, but they seem to have some limitations when it comes to processing multiple IR spectra.

Cheers.

[Star Strider]

‘I am looking for a MATLAB built-in function.’

There isn’t one.

Each spectrum has to be analysed and processed individually.

.

[smsinks]

Thanks Star Strider

[Star Strider]

As always, my pleasure!

Answer 2

[masoud sistaninejad]

data = your data

order = 2 %order must be greater than 0

out = detrend(data,order)