Voigt_Fitter

This program employs Voigt functions to fit spectral peaks.

This program employs Voigt functions to fit spectral peaks. The resulting fit parameters, curves, and quality metrics (R-squared, adjusted R-squared, and reduced Chi-squared) are exported in text files and stored in cell arrays. Additionally, two figures are generated: a plot showing the experimental data along with the Voigt curves calculated using the initial parameter estimates and a plot showing the experimental data along with the final fitting curves.

1. Features

• The main program is named Voigt_Fitter.
• All function names begin with the prefix "F_".
• To run the program, you have to provide the following input parameters at lines 137-154:

Name of the file containing the spectrum to be imported

The lower and upper limits of the x-range in which the fitting will be calculated

Initial guesses for Gaussian and Lorentzian Widths, and Peak Center(s)

The program automatically estimates the peak areas.

• The following files are generated:

filename_Fit_Curves.txt: Contains the experimental data and the fitted curves.

filename_Fit_Par.txt: Contains the fitted parameters and their standard errors.

filename_Fit_Qua.txt: Contains the fitting quality parameters.

• The following figures are generated:

Figure 1: Shows the exp. data and Voigt curves based on the initialized param.

Figure 2: Showss the exp. data and Voigt curves resulting from the fitting.

2. Other details