#### Author

#### SANS@Tools

#### SANS@MLZ

### Useful Links

fit-curve

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

- 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.

“Simply Fit” Example: | fit-curve-introduction.pdf | cylinder-efit.fif | data-cylinder.qti |
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fit-curve.txt · Last modified: 2021/05/04 11:07 by Vitaliy Pipich