RTreeFunctions.hh File Reference

#include "RBaseFunctions.hh"
#include <TTree.h>
#include <TBranch.h>
#include <TLeaf.h>
#include <TTreeFormula.h>
#include <TList.h>

Go to the source code of this file.

Functions
TTree aliases and conditions
bool	RIsTreeFormula (TTree &tree, const string &variable)
TTreeFormula *	RGetTreeFormula (TTree &tree, const string &variable)
int	RGetTreeValue (TTree &tree, const string &variable, double &value)
string	RTreeSelectEq (const string &leaf, const double val, const double prec=0.001)

Detailed Description

Include file for functions related to ROOT TGraph class.

Function Documentation

bool RIsTreeFormula	(	TTree &	tree,
		const string &	variable
	)

Return true if the variable is a formula of the TTree.

Parameters

tree	the TTree object
variable	name of the variable to check

Referenced by RGraphFromTree().

TTreeFormula* RGetTreeFormula	(	TTree &	tree,
		const string &	variable
	)

Create a formula from a TTree alias. The returned pointer is NULL if the variable is not an alias.

Parameters

tree	the TTree object
variable	name of the aliased variable

Referenced by RGetTreeValue(), and RGraphFromTree().

int RGetTreeValue	(	TTree &	tree,
		const string &	variable,
		double &	value
	)

Get the value of the variable (leaf or formula) of the TTree. Returns 0 if no error occured.

Parameters

tree	the TTree object
variable	name of the variable to check
value	the variable value (as function output)

References RGetTreeFormula().

string RTreeSelectEq	(	const string &	leaf,
		const double	val,
		const double	prec
	)

Create a selection string (for TTree) for an equality condition of a floating variable, built from ">" and "<" conditions, to avoid strict equality problems with floating values.

Parameters

leaf	name of the data (TTree leaf)
val	floating value
prec	precision of the comparison

Referenced by RGraphSerieFromTree().