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cf158e2dcd
- added scurve fitting with two different signs (scurve, scurve2) - at the moment no option to set initial parameters --------- Co-authored-by: JulianHeymes <julian.heymes@psi.ch>
115 lines
4.4 KiB
C++
115 lines
4.4 KiB
C++
#pragma once
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#include <cmath>
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#include <fmt/core.h>
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#include <vector>
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#include "aare/NDArray.hpp"
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namespace aare {
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namespace func {
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double gaus(const double x, const double *par);
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NDArray<double, 1> gaus(NDView<double, 1> x, NDView<double, 1> par);
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double pol1(const double x, const double *par);
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NDArray<double, 1> pol1(NDView<double, 1> x, NDView<double, 1> par);
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double scurve(const double x, const double *par);
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NDArray<double, 1> scurve(NDView<double, 1> x, NDView<double, 1> par);
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double scurve2(const double x, const double *par);
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NDArray<double, 1> scurve2(NDView<double, 1> x, NDView<double, 1> par);
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} // namespace func
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/**
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* @brief Estimate the initial parameters for a Gaussian fit
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*/
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std::array<double, 3> gaus_init_par(const NDView<double, 1> x, const NDView<double, 1> y);
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std::array<double, 2> pol1_init_par(const NDView<double, 1> x, const NDView<double, 1> y);
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std::array<double, 6> scurve_init_par(const NDView<double, 1> x, const NDView<double, 1> y);
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std::array<double, 6> scurve2_init_par(const NDView<double, 1> x, const NDView<double, 1> y);
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static constexpr int DEFAULT_NUM_THREADS = 4;
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/**
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* @brief Fit a 1D Gaussian to data.
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* @param data data to fit
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* @param x x values
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*/
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NDArray<double, 1> fit_gaus(NDView<double, 1> x, NDView<double, 1> y);
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/**
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* @brief Fit a 1D Gaussian to each pixel. Data layout [row, col, values]
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* @param x x values
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* @param y y values, layout [row, col, values]
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* @param n_threads number of threads to use
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*/
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NDArray<double, 3> fit_gaus(NDView<double, 1> x, NDView<double, 3> y,
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int n_threads = DEFAULT_NUM_THREADS);
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/**
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* @brief Fit a 1D Gaussian with error estimates
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* @param x x values
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* @param y y values, layout [row, col, values]
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* @param y_err error in y, layout [row, col, values]
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* @param par_out output parameters
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* @param par_err_out output error parameters
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*/
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void fit_gaus(NDView<double, 1> x, NDView<double, 1> y, NDView<double, 1> y_err,
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NDView<double, 1> par_out, NDView<double, 1> par_err_out,
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double& chi2);
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/**
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* @brief Fit a 1D Gaussian to each pixel with error estimates. Data layout
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* [row, col, values]
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* @param x x values
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* @param y y values, layout [row, col, values]
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* @param y_err error in y, layout [row, col, values]
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* @param par_out output parameters, layout [row, col, values]
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* @param par_err_out output parameter errors, layout [row, col, values]
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* @param n_threads number of threads to use
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*/
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void fit_gaus(NDView<double, 1> x, NDView<double, 3> y, NDView<double, 3> y_err,
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NDView<double, 3> par_out, NDView<double, 3> par_err_out, NDView<double, 2> chi2_out,
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int n_threads = DEFAULT_NUM_THREADS
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);
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NDArray<double, 1> fit_pol1(NDView<double, 1> x, NDView<double, 1> y);
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NDArray<double, 3> fit_pol1(NDView<double, 1> x, NDView<double, 3> y,
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int n_threads = DEFAULT_NUM_THREADS);
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void fit_pol1(NDView<double, 1> x, NDView<double, 1> y, NDView<double, 1> y_err,
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NDView<double, 1> par_out, NDView<double, 1> par_err_out, double& chi2);
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// TODO! not sure we need to offer the different version in C++
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void fit_pol1(NDView<double, 1> x, NDView<double, 3> y, NDView<double, 3> y_err,
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NDView<double, 3> par_out, NDView<double, 3> par_err_out,NDView<double, 2> chi2_out,
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int n_threads = DEFAULT_NUM_THREADS);
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NDArray<double, 1> fit_scurve(NDView<double, 1> x, NDView<double, 1> y);
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NDArray<double, 3> fit_scurve(NDView<double, 1> x, NDView<double, 3> y, int n_threads);
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void fit_scurve(NDView<double, 1> x, NDView<double, 1> y, NDView<double, 1> y_err,
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NDView<double, 1> par_out, NDView<double, 1> par_err_out, double& chi2);
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void fit_scurve(NDView<double, 1> x, NDView<double, 3> y, NDView<double, 3> y_err,
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NDView<double, 3> par_out, NDView<double, 3> par_err_out, NDView<double, 2> chi2_out,
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int n_threads);
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NDArray<double, 1> fit_scurve2(NDView<double, 1> x, NDView<double, 1> y);
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NDArray<double, 3> fit_scurve2(NDView<double, 1> x, NDView<double, 3> y, int n_threads);
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void fit_scurve2(NDView<double, 1> x, NDView<double, 1> y, NDView<double, 1> y_err,
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NDView<double, 1> par_out, NDView<double, 1> par_err_out, double& chi2);
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void fit_scurve2(NDView<double, 1> x, NDView<double, 3> y, NDView<double, 3> y_err,
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NDView<double, 3> par_out, NDView<double, 3> par_err_out, NDView<double, 2> chi2_out,
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int n_threads);
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} // namespace aare
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