Gaussian fitting of mutiple peaks in the case of unknown number of peaks in histogram generated from .tex file (for example: test.tex). What are the change required in following code (this code is for 5 peaks)?

[NewRootUser]

It behaves abnormally, sometimes I get the error stating “par” and other undeclared identifiers and sometimes it runs giving the attached result.

This is what I want to do, as in this example (the only difference is that 1. I have .tex file, not the root file and 2. no. of peaks are not known, they need to be automatically detected. ) I’m attaching my sample histo

whose Gaussian peak fitting is planned.

Fitting multiple Gaussians over quadratic bkgd

I have a histogram where I’d like to fit multiple Gaussians over a quadratic background, and draw it over the existing histogram. I have 8 Gaussian, each of which I want to constrain both the centroid and the FWHM (2nd and 3rd parameters), input manually in my script. Attached is the file containing the histogram. Thanks hist.root (29.5 KB)

Maybe you can help, hopefully !!