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Jungfraujoch/common/Histogram.h

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C++

// Copyright (2019-2023) Paul Scherrer Institute
#ifndef JUNGFRAUJOCH_HISTOGRAM_H
#define JUNGFRAUJOCH_HISTOGRAM_H
#include <cstdint>
#include <cstddef>
#include <vector>
#include <mutex>
#include "Plot.h"
template <class T>
class Histogram {
std::vector<T> sum;
std::vector<uint64_t> count;
std::mutex m;
public:
explicit Histogram(size_t bins) : sum(bins), count(bins) {}
void Add(size_t bin, T val) {
std::unique_lock<std::mutex> ul(m);
if (bin < sum.size()) {
sum[bin] += val;
count[bin] += 1;
}
}
Plot GetPlot() {
std::unique_lock<std::mutex> ul(m);
Plot ret;
ret.x.resize(sum.size());
ret.y.resize(sum.size());
for (int i = 0; i < sum.size(); i++) {
ret.x[i] = static_cast<float>(i);
if (count[i] > 0)
ret.y[i] = static_cast<float>(sum[i]) / count[i];
else
ret.y[i] = 0;
}
return ret;
}
};
#endif //JUNGFRAUJOCH_HISTOGRAM_H