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/*
Fitting Jy Wang's temperature profile model
Author: Jingying Wang
Last modification 20120819
*/
#include "wang2012_model.hpp"
#include <core/optimizer.hpp>
#include <core/fitter.hpp>
#include <data_sets/default_data_set.hpp>
#include "chisq.hpp"
#include <methods/powell/powell_method.hpp>
#include <core/freeze_param.hpp>
#include <iostream>
#include <fstream>
#include <vector>
#include <string>
using namespace opt_utilities;
using namespace std;
const double cm=1;
const double kpc=3.08568e+21*cm;
int main(int argc,char* argv[])
{
if(argc<2)
{
cerr<<"Usage:"<<argv[0]<<" <data file with 4 columns of x, xe, y, ye> [param file] [cm per pixel]"<<endl;
return -1;
}
double cm_per_pixel=-1;
if(argc>=4)
{
cm_per_pixel=atof(argv[3]);
}
//define the fitter
fitter<double,double,vector<double>,double,std::string> fit;
//define the data set
default_data_set<double,double> ds;
//open the data file
ifstream ifs(argv[1]);
double min_r=1e9;
//cout<<"read serr 2"<<endl;
ofstream ofs_fit_result("fit_result.qdp");
ofs_fit_result<<"read serr 1 2"<<endl;
ofs_fit_result<<"skip single"<<endl;
if(cm_per_pixel>0)
{
ofs_fit_result<<"la x radius (kpc)"<<endl;
}
else
{
ofs_fit_result<<"la x radius (pixel)"<<endl;
}
ofs_fit_result<<"la y temperature (keV)"<<endl;
for(;;)
{
//read radius, temperature and error
double r,re,t,te;
ifs>>r>>re>>t>>te;
if(!ifs.good())
{
break;
}
min_r=min(r,min_r);
data<double,double> d(r,t,te,te,re,re);
//std::cerr<<r<<"\t"<<t<<"\t"<<te<<endl;
if(cm_per_pixel>0)
{
ofs_fit_result<<r*cm_per_pixel/kpc<<"\t"<<re*cm_per_pixel/kpc<<"\t"<<t<<"\t"<<te<<endl;
}
else
{
ofs_fit_result<<r<<"\t"<<re<<"\t"<<t<<"\t"<<te<<endl;
}
ds.add_data(d);
}
ofs_fit_result<<"no no no"<<endl;
//load data
fit.load_data(ds);
//define the optimization method
fit.set_opt_method(powell_method<double,vector<double> >());
//use chi^2 statistic
chisq<double,double,vector<double>,double,std::string> chisq_object;
chisq_object.set_limit();
fit.set_statistic(chisq_object);
//fit.set_statistic(chisq<double,double,vector<double>,double,std::string>());
fit.set_model(wang2012_model<double>());
if(argc>=3&&std::string(argv[2])!="NONE")
{
std::vector<std::string> freeze_list;
ifstream ifs_param(argv[2]);
assert(ifs_param.is_open());
for(;;)
{
string pname;
double pvalue;
double lower,upper;
char param_status;
ifs_param>>pname>>pvalue>>lower>>upper>>param_status;
if(!ifs_param.good())
{
break;
}
if(param_status=='F')
{
freeze_list.push_back(pname);
}
if(pvalue<=lower||pvalue>=upper)
{
cerr<<"Invalid initial value, central value not enclosed by the lower and upper boundaries, adjust automatically"<<endl;
pvalue=std::max(pvalue,lower);
pvalue=std::min(pvalue,upper);
}
fit.set_param_value(pname,pvalue);
fit.set_param_lower_limit(pname,lower);
fit.set_param_upper_limit(pname,upper);
}
if(!freeze_list.empty())
{
freeze_param<double,double,std::vector<double>,std::string> fp(freeze_list[0]);
fit.set_param_modifier(fp);
for(size_t i=1;i<freeze_list.size();++i)
{
dynamic_cast<freeze_param<double,double,std::vector<double>,std::string>&>(fit.get_param_modifier())+=freeze_param<double,double,std::vector<double>,std::string>(freeze_list[i]);
}
}
}
for(int i=0;i<100;++i)
{
fit.fit();
}
vector<double> p=fit.fit();
#if 0
ofstream output_param;
if(argc>=3&&std::string(argv[2])!="NONE")
{
output_param.open(argv[2]);
}
else
{
output_param.open("para0.txt");
}
#endif
//output parameters
for(size_t i=0;i<fit.get_num_params();++i)
{
std::string pname=fit.get_param_info(i).get_name();
std::string pstatus=fit.get_model().report_param_status(pname);
if(pstatus==""||pstatus=="thawed")
{
pstatus="T";
}
else
{
pstatus="F";
}
cout<<fit.get_param_info(i).get_name()<<"\t"<<fit.get_param_info(i).get_value()<<"\t"<<fit.get_param_info(i).get_lower_limit()<<"\t"<<fit.get_param_info(i).get_upper_limit()<<"\t"<<pstatus<<endl;
//if(argc>=3&&std::string(argv[2])!="NONE")
#if 0
{
output_param<<fit.get_param_info(i).get_name()<<"\t"<<fit.get_param_info(i).get_value()<<"\t"<<fit.get_param_info(i).get_lower_limit()<<"\t"<<fit.get_param_info(i).get_upper_limit()<<"\t"<<pstatus<<endl;
}
#endif
}
//cout<<"T0"<<"\t"<<fit.get_param_value("T0")<<endl;
//cout<<"T1"<<"\t"<<fit.get_param_value("T1")<<endl;
//cout<<"xt"<<"\t"<<fit.get_param_value("xt")<<endl;
//cout<<"eta"<<"\t"<<fit.get_param_value("eta")<<endl;
//dump the data for checking
ofstream ofs_model("wang2012_dump.qdp");
min_r=0;
for(double x=min_r;x<3000;x+=10)
{
double model_value=fit.eval_model_raw(x,p);
ofs_model<<x<<"\t"<<model_value<<endl;
if(cm_per_pixel>0)
{
ofs_fit_result<<x*cm_per_pixel/kpc<<"\t0\t"<<model_value<<"\t0"<<endl;
}
else
{
ofs_fit_result<<x<<"\t0\t"<<model_value<<"\t0"<<endl;
}
}
}
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