SavitzkyGolayFilter.hpp

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#ifndef __NUMERIC_SAVITZKY_GOLAY_FILTER_HPP__
#define __NUMERIC_SAVITZKY_GOLAY_FILTER_HPP__

#include <iostream>
#include <math.h>
#include <stdlib.h>
#include <vector>
#include <algorithm>
#include <stdexcept>

namespace numeric
{
class SavitzkyGolayFilter
{
public:

    SavitzkyGolayFilter(std::vector<double>& result, int ls_point, int half_width, int poly_order, int derivative = 0, double step = 1);
    ~SavitzkyGolayFilter();

private:

    double weight(int i, int t, int m, int n, int s);

    double gramPolynomial(int i, int m, int k, int s);

    double generalizedFactorial(int a, int b);

    void checkParameters(int t, int m, int n, int s, double step);
};
}

#endif