How to mask the peak of a curve ?
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Atharva Joshi
on 6 Apr 2020
Commented: Image Analyst
on 7 Apr 2020
3 Comments
Image Analyst
on 6 Apr 2020
What do you mean by "mask the peak"?
- Do you mean that you want to erase the peak by setting it to zero?
- Do you mean that you want to erase outside the peak by setting it to zero?
- Do you mean that you want to find the "bottoms" of the peak and fit a line across the base to make it look as if it weren't there?
- Do you want to do a baseline correction, to basically detrend the data and make the baseline flat?
- Do you want to extract only the peak portion and exclude other parts?
or something else? Which one?
Accepted Answer
Image Analyst
on 6 Apr 2020
See my attached demo for fitting two Gaussians on a slant to noisy data.
It should be very easy for you to adapt it to use only a single Gaussian. Let me know if you can't figure it out.
3 Comments
Image Analyst
on 7 Apr 2020
The signal is what it is. And it's not a nice symmetrical Gaussian either before or after subtracting the baseline. Why do you want to alter it to something that it is not? If you want a perfectly symmetrical Gaussian instead of your actual data, then just use the fitted red line.
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