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51 строка
1.3 KiB
C++
51 строка
1.3 KiB
C++
#include "histogram.h"
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void
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find_minmax(const std::vector<double>& numbers, double& min, double& max){
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min = numbers[0];
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max = numbers[0];
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for (double x: numbers){
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if (min > x){
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min = x;
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}
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if (max < x){
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max = x;
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}
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}
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}
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std::vector<size_t>
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make_histogram(const std::vector<double>& numbers, size_t bin_count){
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double min, max;
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std::vector <size_t> bins(bin_count);
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find_minmax(numbers, min, max);
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double diff = (max - min) / bin_count;
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for (double x: numbers){
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bool found = false;
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for (size_t j = 0;(j < bin_count - 1) && !found; j++){
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auto lo = min + j * diff;
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auto hi = min + (j + 1) * diff;
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if ((lo <= x) && (hi > x)){
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bins[j]++;
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found = true;
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}
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}
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if(!found){
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bins[bin_count - 1]++;
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}
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}
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return bins;
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}
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std::vector<double>
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make_borders(const std::vector<double>& numbers, size_t bin_count){
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double min, max;
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find_minmax(numbers, min, max);
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double diff = (max - min) / bin_count;
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std::vector <double> borders(bin_count - 1);
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for (size_t i = 0; i <= bin_count - 2; i++){
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borders[i] = min + (i + 1) * diff;
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}
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return borders;
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}
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