Jpp
18.2.0
the software that should make you happy
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Implementation of the Zeros test for histograms with expected low bin contents. More...
#include <JTestZero_t.hh>
Public Member Functions | |
JTestZero_t () | |
Default constructor. More... | |
JTestResult | JTestZero_2D (TH2 *h1, TH2 *h2, double outliersThreshold, double threshold, std::string testName, std::string parameterName) |
Bin-by-Bin test for 2D histograms where a very low number of entries is expected. More... | |
Implementation of the Zeros test for histograms with expected low bin contents.
Definition at line 28 of file JTestZero_t.hh.
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inline |
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inline |
Bin-by-Bin test for 2D histograms where a very low number of entries is expected.
The test loops over all the bins of both histograms and performs the following operations.
-Calculates the probability that the observed bin content for histogram A is obtained from a Poisson of parameter 1.
-Compares the previous result with the threshold value given as an input parameter. The result is true if the probability is higher than the threshold.
-Calculates the probability that the observed bin content for histogram B is obtained from a Poisson of parameter 1.
-Compares the previous result with the threshold value given as an input parameter. The result is true if the probability is higher than the threshold.
-Compares the results from both bins: If both are true, or both are false, the test is passed. If one is true and the other is false, the test is failed.
At the end of the loop, a failure fraction is computed and compared to the outliersThreshold parameter. If the failure fraction is above the threshold, the test is failed.
h1 | First object |
h2 | Second object |
outliersThreshold | Fraction of incompatible bins allowed. |
threshold | Poisson p-value |
parameterName | Name of the parameter used to test the histograms |
testName | Name of the test used to compare the histograms |
Definition at line 54 of file JTestZero_t.hh.