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/**
\file nbeta1d
\brief 1d density beta model
\author Junhua Gu
*/
#ifndef NBETA_MODEL_H_
#define NBETA_MODEL_H_
#define OPT_HEADER
#include <core/fitter.hpp>
#include <cmath>
#include <iostream>
namespace opt_utilities
{
template <typename T>
class nbeta1d
:public model<T,T,std::vector<T> ,std::string>
{
private:
model<T,T,std::vector<T> >* do_clone()const
{
return new nbeta1d<T>(*this);
}
const char* do_get_type_name()const
{
return "1d density beta model";
}
public:
nbeta1d()
{
this->push_param_info(param_info<std::vector<T> >("n0",1));
this->push_param_info(param_info<std::vector<T> >("rc",10));
this->push_param_info(param_info<std::vector<T> >("beta",2./3.));
this->push_param_info(param_info<std::vector<T> >("bkg",0));
}
T do_eval(const T& x,const std::vector<T>& param)
{
T n0=get_element(param,0);
T r_c=get_element(param,1);
T beta=get_element(param,2);
T bkg=get_element(param,3);
return bkg+n0*pow(1+(x*x)/(r_c*r_c),-3./2.*beta);
}
private:
std::string do_get_information()const
{
return "<math xmlns=\"http://www.w3.org/1998/Math/MathML\" display=\"block\" class=\"equation\"><mi>f</mi><mrow><mo class=\"MathClass-open\">(</mo><mrow><mi>x</mi><mo class=\"MathClass-punc\">;</mo><msub><mrow><mi>n</mi></mrow><mrow><mn>0</mn></mrow></msub><mo class=\"MathClass-punc\">,</mo><mi>β</mi><mo class=\"MathClass-punc\">,</mo><msub><mrow><mi>r</mi></mrow><mrow><mi>c</mi></mrow></msub><mo class=\"MathClass-punc\">,</mo><mi>b</mi><mi>k</mi><mi>g</mi></mrow><mo class=\"MathClass-close\">)</mo></mrow> <mo class=\"MathClass-rel\">=</mo> <msub><mrow><mi>n</mi></mrow><mrow><mn>0</mn></mrow></msub><msup><mrow> <mfenced separators=\"\" open=\"[\" close=\"]\"><mrow><mn>1</mn> <mo class=\"MathClass-bin\">+</mo><msup><mrow> <mfenced separators=\"\" open=\"(\" close=\")\"><mrow> <mfrac><mrow><mi>r</mi></mrow><mrow><msub><mrow><mi>r</mi></mrow><mrow><mi>c</mi></mrow></msub></mrow></mfrac></mrow></mfenced> </mrow><mrow><mn>2</mn></mrow></msup></mrow></mfenced> </mrow><mrow><mo class=\"MathClass-bin\">−</mo><mfrac><mrow><mn>3</mn></mrow><mrow><mn>2</mn></mrow></mfrac><mi>β</mi><mo class=\"MathClass-bin\">+</mo><mn>1</mn><mo class=\"MathClass-bin\">∕</mo><mn>2</mn></mrow></msup> <mo class=\"MathClass-bin\">+</mo> <mi>b</mi><mi>k</mi><mi>g</mi></math>";
}
};
}
#endif
//EOF
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