Specialization of RMergeableValue for the StdDev action.
This class also stores information about the number of entries and the average used to compute the standard deviation.
Definition at line 454 of file RMergeableValue.hxx.
Private Member Functions | |
void | Merge (const RMergeableValue< Double_t > &other) final |
Aggregate the information contained in another RMergeableValue into this. | |
Private Attributes | |
ULong64_t | fCounts |
Number of entries of the set. | |
Double_t | fMean |
Average of the set. | |
Additional Inherited Members | |
Protected Attributes inherited from ROOT::Detail::RDF::RMergeableValue< Double_t > | |
Double_t | fValue |
#include <ROOT/RDF/RMergeableValue.hxx>
|
inline |
Constructor that initializes data members.
[in] | value | The action result. |
[in] | counts | The number of entries of the set. |
[in] | mean | The average of the set. |
Definition at line 513 of file RMergeableValue.hxx.
|
default |
Default constructor.
Needed to allow serialization of ROOT objects. See [TBufferFile::WriteObjectClass] (classTBufferFile.html::a209078a4cb58373b627390790bf0c9c1)
|
delete |
|
delete |
|
inlinefinalprivatevirtual |
Aggregate the information contained in another RMergeableValue into this.
[in] | other | Another RMergeableValue object. |
std::invalid_argument | If the cast of the other object to the same type as this one fails. |
The other RMergeableValue object is cast to the same type as this object. This is needed to make sure that only results of the same type of action are merged together. The function then computes the aggregated standard deviation of the two samples using an algorithm by [Chan et al. (1979)] (http://i.stanford.edu/pub/cstr/reports/cs/tr/79/773/CS-TR-79-773.pdf)
Merge
methods in the RMergeableValue family are private. To merge multiple RMergeableValue objects please use [MergeValues] (namespaceROOT_1_1Detail_1_1RDF.html::af16fefbe2d120983123ddf8a1e137277). Implements ROOT::Detail::RDF::RMergeableValue< Double_t >.
Definition at line 475 of file RMergeableValue.hxx.
|
delete |
|
delete |
|
private |
Number of entries of the set.
Definition at line 455 of file RMergeableValue.hxx.
|
private |
Average of the set.
Definition at line 456 of file RMergeableValue.hxx.