LArSoft  v09_90_00
Liquid Argon Software toolkit - https://larsoft.org/
FlashUtilities.cxx
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1 
13 #include <cmath>
14 #include <limits>
15 #include <numeric>
16 #include <stdexcept>
17 
18 #include "FlashHypothesis.h"
19 #include "FlashUtilities.h"
20 
22  const std::vector<float>& compare_vector,
23  std::vector<float>& result_vector)
24 {
25  if (compare_vector.size() != fh.GetVectorSize())
26  throw std::runtime_error("ERROR in FlashUtilities Compare: Mismatching vector sizes.");
27 
28  result_vector.resize(fh.GetVectorSize());
29 
30  float result_total = 0;
31 
32  std::vector<float> const& NPEs_Vector(fh.GetHypothesisVector());
33  std::vector<float> const& NPEs_ErrorVector(fh.GetHypothesisErrorVector());
34 
35  for (size_t i = 0; i < fh.GetVectorSize(); i++) {
36  result_total += compare_vector[i];
37  float diff = NPEs_Vector[i] - compare_vector[i];
38  if (std::abs(diff) < std::numeric_limits<float>::epsilon())
39  result_vector[i] = 0;
40  else if (NPEs_ErrorVector[i] < std::numeric_limits<float>::epsilon())
41  result_vector[i] = diff / std::numeric_limits<float>::epsilon();
42  else
43  result_vector[i] = diff / NPEs_ErrorVector[i];
44  }
45 
46  float total_error = fh.GetTotalPEsError();
47  float total_diff = fh.GetTotalPEs() - result_total;
48  if (std::abs(total_diff) < std::numeric_limits<float>::epsilon())
49  result_total = 0;
50  else if (total_error < std::numeric_limits<float>::epsilon())
51  result_total = total_diff / std::numeric_limits<float>::epsilon();
52  else
53  result_total = total_diff / total_error;
54 
55  return result_total;
56 }
57 
59  const std::vector<float>& compare_vector,
60  std::vector<float>& result_vector)
61 {
62  return CompareByFraction(fh.GetHypothesisVector(), compare_vector, result_vector);
63 }
64 
65 float opdet::FlashUtilities::CompareByFraction(const std::vector<float>& NPEs_Vector,
66  const std::vector<float>& compare_vector,
67  std::vector<float>& result_vector)
68 {
69  if (compare_vector.size() != NPEs_Vector.size())
70  throw std::runtime_error("ERROR in FlashUtilities Compare: Mismatching vector sizes.");
71 
72  result_vector.resize(NPEs_Vector.size());
73 
74  float total_comp = 0;
75  float total_hyp = 0;
76  for (size_t i = 0; i < NPEs_Vector.size(); i++) {
77  total_comp += compare_vector[i];
78  total_hyp += NPEs_Vector[i];
79  float diff = NPEs_Vector[i] - compare_vector[i];
80  if (std::abs(diff) < std::numeric_limits<float>::epsilon())
81  result_vector[i] = 0;
82  else if (compare_vector[i] < std::numeric_limits<float>::epsilon())
83  result_vector[i] = diff / std::numeric_limits<float>::epsilon();
84  else
85  result_vector[i] = diff / compare_vector[i];
86  }
87 
88  float result_total = 0.0;
89  float total_diff = total_hyp - total_comp;
90  if (std::abs(total_diff) < std::numeric_limits<float>::epsilon())
91  result_total = 0;
92  else if (total_comp < std::numeric_limits<float>::epsilon())
93  result_total = total_diff / std::numeric_limits<float>::epsilon();
94  else
95  result_total = total_diff / total_comp;
96 
97  return result_total;
98 }
99 
100 void opdet::FlashUtilities::GetPosition(const std::vector<float>& pe_vector,
101  const std::vector<float>& pos_vector,
102  float& mean,
103  float& rms)
104 {
105  if (pe_vector.size() != pos_vector.size())
106  throw std::runtime_error("ERROR in FlashUtilities GetPosition: Mismatchin vector sizes.");
107 
108  float sum = std::accumulate(pe_vector.begin(), pe_vector.end(), 0.0);
109 
110  if (sum < std::numeric_limits<float>::epsilon()) {
111  mean = 0;
112  rms = 0;
113  return;
114  }
115 
116  mean = std::inner_product(pe_vector.begin(), pe_vector.end(), pos_vector.begin(), 0.0) / sum;
117 
118  rms = 0;
119  for (size_t i = 0; i < pe_vector.size(); i++)
120  rms += pe_vector[i] * (pos_vector[i] - mean) * (pos_vector[i] - mean);
121 
122  rms = std::sqrt(rms) / sum;
123 }
124 
125 void opdet::FlashUtilities::GetPosition(const std::vector<float>& pe_vector,
126  const std::vector<float>& pos_vector,
127  double& mean,
128  double& rms)
129 {
130  float fmean, frms;
131  GetPosition(pe_vector, pos_vector, fmean, frms);
132  mean = double(fmean);
133  rms = double(frms);
134 }
size_t GetVectorSize() const
float GetTotalPEsError() const
constexpr auto abs(T v)
Returns the absolute value of the argument.
std::vector< float > const & GetHypothesisErrorVector() const
float CompareByFraction(const FlashHypothesis &, const std::vector< float > &, std::vector< float > &)
float GetTotalPEs() const
void GetPosition(const std::vector< float > &, const std::vector< float > &, float &, float &)
float CompareByError(const FlashHypothesis &, const std::vector< float > &, std::vector< float > &)
double mean(const std::vector< short > &wf, size_t start, size_t nsample)
Definition: UtilFunc.cxx:13
Double_t sum
Definition: plot.C:31
std::vector< float > const & GetHypothesisVector() const