DGtal  1.5.beta
testStatistics.cpp
Go to the documentation of this file.
1
31 #include <iostream>
32 #include <vector>
33 #include "DGtal/math/Statistic.h"
34
36
37 using namespace std;
38 using namespace DGtal;
39
41 // Functions for testing class Statistics.
43
48 {
49  unsigned int nbok = 0;
50  unsigned int nb = 3;
51
52  trace.beginBlock ( "Testing Statistics ..." );
53
54  Statistic<double> stat;
55
56  for(unsigned int k=0; k < 1000; k++)
58
59  stat.terminate();
60
61  trace.info() << "Mean value = "<<stat.mean() << std::endl;
62  nbok += (stat.mean()==499.5) ? 1 : 0;
63  trace.info() << "Variance value = "<<stat.variance()<<std::endl;
64  trace.info() << "Max value = "<<stat.max()<<std::endl;
65  nbok += (stat.max()==999) ? 1 : 0;
66  trace.info() << "Min value = "<<stat.min()<<std::endl;
67  nbok += (stat.min()==0) ? 1 : 0;
68
69  trace.info() << "(" << nbok << "/" << nb << ") "
70  << "true == true" << std::endl;
71  trace.endBlock();
72
73  return nbok == nb;
74 }
75
81 {
82  unsigned int nbok = 0;
83  unsigned int nb = 4;
84
85  trace.beginBlock ( "Testing Statistics with saving option ..." );
86
87  Statistic<double> stat(true);
88
89
90  for(unsigned int k=0; k < 100; k++)
93  for(unsigned int k=0; k < 100; k++)
95
96  stat.terminate();
97
98  trace.info() << "Mean value = "<<stat.mean() << std::endl;
99  nbok += (stat.mean()==88) ? 1 : 0;
100  trace.info() << "Variance value = "<<stat.variance()<<std::endl;
101  trace.info() << "Max value = "<<stat.max()<<std::endl;
102  nbok += (stat.max()==99) ? 1 : 0;
103  trace.info() << "Min value = "<<stat.min()<<std::endl;
104  nbok += (stat.min()==77) ? 1 : 0;
105  trace.info() << "Median value = "<<stat.median()<<std::endl;
106  nbok += (stat.median()==88) ? 1 : 0;
107
108  trace.info() << "(" << nbok << "/" << nb << ") "
109  << "true == true" << std::endl;
110  trace.endBlock();
111
112  return nbok == nb;
113 }
114
116 // Standard services - public :
117
118 int main( int argc, char** argv )
119 {
120  trace.beginBlock ( "Testing class Statistics" );
121  trace.info() << "Args:";
122  for ( int i = 0; i < argc; ++i )
123  trace.info() << " " << argv[ i ];
124  trace.info() << endl;
125
126  bool res = testStatistics(); // && ... other tests
127  trace.emphase() << ( res ? "Passed." : "Error." ) << endl;
128
129  trace.beginBlock ( "Testing class Statistics (with option for saving samples)" );
130  trace.info() << "Args:";
131  for ( int i = 0; i < argc; ++i )
132  trace.info() << " " << argv[ i ];
133  trace.info() << endl;
134
135  bool res2 = testStatisticsSaving(); // && ... other tests
136  trace.emphase() << ( res2 ? "Passed." : "Error." ) << endl;
137
138
139  trace.endBlock();
140  return (res &&res2) ? 0 : 1;
141 }
142 // //
Aim: This class processes a set of sample values for one variable and can then compute different stat...
Definition: Statistic.h:70
double variance() const
Quantity median()
double mean() const
Quantity max() const
Quantity min() const