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region.cpp
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region.cpp
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#include "region.h"
#include <random>
#include<cstdlib>
#include "Expdata.h"
#include <iostream>
#include <sstream>
#include <string>
#include <fstream>
region::region()
{
}
region::region(Histogram input) :
nominal{ input }
{
nominal.name = "sum";
};
region::region(Histogram input, vector<Histogram> consist) :
nominal{ input }
{
nominal.name = "sum";
for(auto i: consist)
{
if(nominal.size() == i.size())
individal_nominal.push_back(i);
else
{
cout << "Error: cannot add sub histogram.";
exit(1);
}
}
};
region::~region()
{
for (int i = 0; i < int(sys_updown.size()); i++)
{
delete sys_updown[i][0];
delete sys_updown[i][1];
}
for (int i = 0; i < int(sys_oneside.size()); i++)
{
delete sys_oneside[i];
}
}
// get size
int region::size()
{
return nominal.size();
}
// add new oneside systematics
void region::add_sys(Histogram input, string sys_name)
{
if (size() == input.size())
{
Histogram* sys = new Histogram(input);
sys_oneside.push_back(sys);
sys_oneside_name.push_back(sys_name);
}
else
{
cout << "Error: add_sys bin size do not match.";
exit(1);
}
}
// add new twoside systematics
void region::add_sys(Histogram input1, Histogram input2, string sys_name)
{
if (size() == input1.size() && size() == input2.size())
{
std::vector<Histogram*> total;
total.push_back(new Histogram(input1));
total.push_back(new Histogram(input2));
sys_updown.push_back(total);
sys_updown_name.push_back(sys_name);
}
else
{
cout << "Error: add_sys bin size do not match.";
exit(1);
}
}
// calculate systematics
void region::calculate_sys()
{
int number_of_exp =10000;
// normal distribution generator
std::default_random_engine generator;
std::normal_distribution<double> distribution(0, 1);
// every experiment in each bin
vector<Expdata*> all_exp;
for (int i_bin = 0; i_bin < size(); i_bin++)
all_exp.push_back(new Expdata());
// each experiment
for(int i = 0; i < number_of_exp; i++)
{
//----------
// std::vector<double> syssum(size(), 0);
// int countsys = 0;
//---------
std::vector<double> total_diff(size(), 0);
// each systematics with up and down
for(auto each_sysupdown: sys_updown)
{
double number = distribution(generator);
//-------
//countsys +=2;
// std::vector<double> diffup;
// std::vector<double> diffdo;
// diffup = nominal.subtraction(*each_sysupdown[0]);
// diffdo = nominal.subtraction(*each_sysupdown[1]);
// for (int i_bin = 0; i_bin < size(); i_bin++)
// syssum[i_bin] += diffup[i_bin]*diffup[i_bin] + diffdo[i_bin]*diffdo[i_bin];
//-------
std::vector<double> diff;
if (number >= 0)
{
diff = nominal.subtraction(*each_sysupdown[0]);
}
if (number < 0)
{
diff = nominal.subtraction(*each_sysupdown[1]);
}
for (int i_bin = 0; i_bin < size(); i_bin++)
total_diff[i_bin] += abs(number) * diff[i_bin];
}
// each systematics onesside
for (auto each_sysoneside : sys_oneside)
{
//-------
// countsys +=1;
// std::vector<double> diffup;
// diffup = nominal.subtraction(*each_sysoneside);
// for (int i_bin = 0; i_bin < size(); i_bin++){
// syssum[i_bin] += diffup[i_bin]*diffup[i_bin]/2 + diffup[i_bin]*diffup[i_bin]/2;
// cout << each_sysoneside->content[i_bin] <<"------";}
// cout << endl;
//-------
double number = distribution(generator);
std::vector<double> diff = nominal.subtraction(*each_sysoneside);
for (int i_bin = 0; i_bin < size(); i_bin++)
total_diff[i_bin] += number * diff[i_bin];
}
for (int i_bin = 0; i_bin < size(); i_bin++)
{
//--------
//cout << syssum[i_bin] << " ";
//--------
double each_all_exp = total_diff[i_bin] + nominal.content[i_bin];
if( each_all_exp <0 )
{
//cout << each_all_exp << " ";
each_all_exp = 0;
}
all_exp[i_bin]->append(each_all_exp);
}
//-----
// cout <<"\n"<<countsys<<endl;
// exit(1);
//-----
}
nominal.systematics = vector<double>(size(), 0.);
vector<double> newheight(size(), 0.);
//vector<double> newstat(size(), 0.);
for (int i_bin = 0; i_bin < size(); i_bin++)
{
nominal.systematics[i_bin] = pow(all_exp[i_bin]->sigma2(), 0.5);
newheight[i_bin] = all_exp[i_bin]->mean();
}
systematics = Histogram(nominal.binning, newheight, nominal.statistics, nominal.systematics);
vector<double> shape_sys(size(), 0.);
vector<double> shape_height(size(), 0.);
for (int i_bin = 0; i_bin < size(); i_bin++)
{
all_exp[i_bin]->rescale(nominal.sum()/systematics.sum());
shape_sys[i_bin] = pow(all_exp[i_bin]->sigma2(), 0.5);
shape_height[i_bin] = all_exp[i_bin]->mean();
}
shape = Histogram(nominal.binning, shape_height, nominal.statistics, shape_sys);
// free memory
for (int i_bin = 0; i_bin < size(); i_bin++)
delete all_exp[i_bin];
}
// convert object to json
// unfinished
string region::json()
{
string output{"{\"nominal\": "};
output += nominal.json() + ", ";
output += "\"shape\": ";
output += shape.json() + ", ";
for( auto each: individal_nominal)
{
output += "\"" + each.name + "\": ";
output += each.json() + ", ";
}
output = output.substr(0, output.size()-2);
output += "}";
return output;
}
string region::getsystable()
{
string output = "";
vector<string> allsysname;
for(int i = 0;i<sys_oneside.size();i++)
{
double diff = 0;
double diff_shape = 0;
diff = (sys_oneside[i]->sum() - nominal.sum())/nominal.sum() * 100;
diff_shape = nominal.binneddiff(*(sys_oneside[i]));
output += sys_oneside_name[i] + " " + to_string(diff) + " " + to_string(diff_shape) + "\n";
allsysname.push_back(sys_oneside_name[i].substr(0, sys_oneside_name[i].size()-2));
}
for(int i = 0;i<sys_updown.size();i++)
{
double diff = 0;
double diff_shape = 0;
diff_shape = nominal.binneddiff(*(sys_updown[i][0]));
diff = (sys_updown[i][0]->sum() - nominal.sum())/nominal.sum() * 100;
output += sys_updown_name[i] + " up " + to_string(diff) + " " + to_string(diff_shape) + "\n";
diff_shape = nominal.binneddiff(*(sys_updown[i][1]));
diff = (sys_updown[i][1]->sum() - nominal.sum())/nominal.sum() * 100;
output += sys_updown_name[i] + " down " + to_string(diff) + " " + to_string(diff_shape) + "\n";
allsysname.push_back(sys_updown_name[i].substr(0, sys_updown_name[i].size()-2));
}
ofstream myfile;
myfile.open ("allsysname.txt");
for(auto eachname:allsysname)
{
myfile<<"ShapeSyst = " << eachname << "\n";
}
myfile.close();
return output;
}