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Histogram.cpp
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Histogram.cpp
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#include "Histogram.h"
#include "jsonlib.h"
#include <iostream>
#include <sstream>
#include <string>
#include <cmath>
Histogram::Histogram()
{
binning = {};
content = {};
statistics = {};
systematics = {};
}
Histogram::Histogram(std::vector<double> bin, std::vector<double> con, std::vector<double> sta, std::vector<double> sys)
{
if (bin.size()==0)
{
cout << "Histogram::Histogram: must have at least one bin." << endl;
exit(1);
}
if (bin.size() - 1 == con.size() && con.size() == sta.size())
{
binning = bin;
content = con;
statistics = sta;
systematics = {};
if (sys.size() != 0)
{
if (sys.size() == con.size())
systematics = sys;
else
{
cout << "Error: invalid systematics bin size." << endl;
exit(1);
}
}
}
else
{
cout << "Error: invalid bin size." << bin.size() - 1 << " " << con.size() <<" "<< sta.size() << endl;
exit(1);
}
}
// copy constructor
Histogram::Histogram(const Histogram& input)
{
if (&input != this)
{
binning = input.binning;
content = input.content;
statistics = input.statistics;
systematics = input.systematics;
name = input.name;
}
}
Histogram::~Histogram()
{
}
// get histogram size
int Histogram::size()
{
return content.size();
}
// merge histogram
void Histogram::add(Histogram h1, string note)
{
notes.push_back(note);
// check size
if (size() != h1.size())
{
cout << "Error: binnings do not match.";
exit(1);
}
for (int i = 0; i < size(); i++)
{
content[i] += h1.content[i];
double stat{ 0 };
stat = sqrt(pow(statistics[i], 2) + pow(h1.statistics[i], 2));
statistics[i] = stat;
if (systematics.size() != 0 && h1.systematics.size() != 0)
{
stat = 0;
stat = sqrt(pow(systematics[i], 2) + pow(h1.systematics[i], 2));
systematics[i] = stat;
}
}
}
double Histogram::binneddiff(Histogram input)
{
double diff = 0;
if (size() == input.size())
{
for (int i = 0; i < size(); i++)
{
diff += abs(input.content[i] - content[i]);
}
}
else
{
cout << "Error: binneddiff failed due to different bin size.";
exit(1);
}
return diff/sum() * 100;
}
std::vector<double> Histogram::subtraction(Histogram input)
{
std::vector<double> result;
if (size() == input.size())
{
for (int i = 0; i < size(); i++)
{
result.push_back(input.content[i] - content[i]);
}
}
else
{
cout << "Error: subtraction failed due to different bin size.";
exit(1);
}
return result;
}
double Histogram::sum()
{
double output{ 0. };
for (int i{ 0 }; i < size(); i++)
{
output += content[i];
}
return output;
}
// print everything
void Histogram::print()
{
cout << "\nbins: ";
for (auto i: binning)
{
cout << i << " ";
}
cout << endl;
cout << "content: ";
for (auto i : content)
{
cout << i << " ";
}
cout << endl;
cout << "stat: ";
for (auto i : statistics)
{
cout << i << " ";
}
cout << endl;
cout << "syst: ";
for (auto i : systematics)
{
cout << i << " ";
}
cout << endl;
}
string Histogram::json()
{
string result{ "{" };
stringstream ss;
ss << "\"binning\": " << vectertojson<double>(binning) << ", \"content\": " << vectertojson<double>(content)
<< ", \"stat\": " << vectertojson<double>(statistics) << ", \"syst\": " << vectertojson<double>(systematics)
<< ", \"name\": " << "\"" << name << "\""
<<"}";
result += ss.str();
return result;
}