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fityk - software for fitting peaks - unipress.waw.pl
Fityk is a general-purpose data fitting program. It is being developed to analyze powder diffraction patterns, but it can be used to fit analytical (especially peak-shaped) functions to any kind of data
fityk fit nonlinear curve fitting peak peaks peak fitting separation pearson vii voigt gaussian lorentzian data chi chi2 least squares spectroscopy signal analysis chromatography electrophoresis
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