ess.nmx.scaling.fit_wavelength_scale_factor_polynomial#

ess.nmx.scaling.fit_wavelength_scale_factor_polynomial(estimated_intensities, *, n_degree)[source]#

Fit the wavelength scale factor polynomial.

It uses polyval_wavelength() as the fitting function and scipp.optimize.curve_fit() for the fitting process. The initial guess for the polynomial coefficients is set to 1 for all degrees. The unit of the coefficients is adjusted to make the fitting result dimensionless.

Parameters:

  • estimated_intensities (scaling.FilteredEstimatedScaledIntensities (scipp.DataArray)) – The estimated scaled intensities to be fitted.

  • n_degree (scaling.WavelengthFittingPolynomialDegree (int)) – The degree of the polynomial to be fitted.

Returns:

FittingResult – The fitting result.