xypor/index.php

/*

    SPDX-FileCopyrightText: 2019 Hy Murveit <hy-1@murveit.com>


    SPDX-License-Identifier: GPL-2.0-or-later

*/


#pragma once


#include <QVector>

#include <qcustomplot.h>


namespace Ekos

{


class PolynomialFit

{

public:

    // Constructor. Pass in the degree of the desired polynomial fit, and a vector with the x and y values.

    // The constructor solves for the polynomial coefficients.

    PolynomialFit(int degree, uint8_t maxCount, const QVector<double>& x, const QVector<double>& y);

    PolynomialFit(int degree, const QVector<int>& x, const QVector<double>& y);


    // Returns the minimum position and value in the pointers for the solved polynomial.

    // Returns false if the polynomial couldn't be solved.

    bool findMinimum(double expected, double minPosition, double maxPosition, double *position, double *value);


    /**

     * @brief Polynomial function f(x)

     * @param x argument

     * @return f(x)

     */

    double f(double x);


private:

    // Solves for the polynomial coefficients.

    void solve(const QVector<double>& positions, const QVector<double>& values);


    // Calculates the value of the polynomial at x.

    // Params will be cast to a PolynomialFit*.

    static double polynomialFunction(double x, void *params);


    // Polynomial degree.

    int degree;

    // The data values.

    QVector<double> x, y;

    // The solved polynomial coefficients.

    std::vector<double> coefficients;

};

}

Ekos
Ekos is an advanced Astrophotography tool for Linux.
Definition align.cpp:83

QVector