Use the Aggregate action to specify arbitrary data aggregations.
This tutorial shows how to use the Aggregate action to evaluate the product of all the elements of a column. This operation may be performed using a Reduce action, however aggregate is used for the sake of the tutorial
{
for (
int i = 1; i <
size; ++i) {
}
};
std::cout << *
result << std::endl;
}
size_t size(const MatrixT &matrix)
retrieve the size of a square matrix
ROOT::Detail::TRangeCast< T, true > TRangeDynCast
TRangeDynCast is an adapter class that allows the typed iteration through a TCollection.
Option_t Option_t TPoint TPoint const char GetTextMagnitude GetFillStyle GetLineColor GetLineWidth GetMarkerStyle GetTextAlign GetTextColor GetTextSize void char Point_t Rectangle_t WindowAttributes_t Float_t Float_t Float_t Int_t Int_t UInt_t UInt_t Rectangle_t result
ROOT's RDataFrame offers a modern, high-level interface for analysis of data stored in TTree ,...
void EnableImplicitMT(UInt_t numthreads=0)
Enable ROOT's implicit multi-threading for all objects and methods that provide an internal paralleli...
- Date
- July 2018
- Authors
- Enrico Guiraud, Danilo Piparo (CERN), Massimo Tumolo (Politecnico di Torino)
Definition in file df023_aggregate.C.