QtiSAS & QtiKWS

SA(N)S related software: data reduction, analysis, global instrumental fit

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SANS
Data
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SANS
1D


Compile
Fitting
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Fitting
Curve(s)
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Singular
Value De-
composition


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SANS@MLZ




Very Small Angle Scattering KWS-3 "VerySANS" www.verysans.com

JCNS :: Institutes

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fit-curve

Global Fit      SA(N)S Fit      Superpositional Fit      Easy Fit (eFit)      Batch Fit (Set-by-Set)      Function Simulator

Nonlinear Fit.Curve(s) Interface


  • Standard mode Simply fit example is shown below
  • Fitting interface Fit.Curve(s) allows to fit a dataset taking into account polydispersity [of any parameter of a fitting function] and/or the instrument resolution in SA(N)S Fit mode.
  • Global Fit algorithm is implemented, that allows simultaneously fit several curves with a mixute of global(common) and individual parametares.
  • In Batch Fit (Set-by-Set) mode hundreds datasets could be fitted/re-fitted in “two mouse clicks”. This option is especially important for time resolved measurements, when datasets should be analyzed in the same way.
  • Powerful Function Simulator simplifies the estimation of initial fitting parameters and the presentation of the obtained fitting curve(s).
  • An advance of the fitting with QtiSAS is the runtime compilation of a fitting function in Fit.Compile . Program has possibility to check code of the function, change , and recompile it as a new function. The user-friendly interface Fit.Compile allows to create and compile a function of any complexity. GSL numerical algorithms could be easily integrated in the function body. The fitting function is written in C/C++, but option of calling of FORTRAN functions is implemented.



fit-curve.txt · Last modified: 2021/05/04 11:07 by Vitaliy Pipich