Programming Language: C++ (Cpp)

Class/Type: TH1D

Method/Function: GetFunction

Examples at hotexamples.com: 17

The TH1D GetFunction method is a function of the ROOT data analysis framework, a popular software package for particle physics research. It allows users to extract a mathematical function from a stored histogram (TH1D) object.

Here are some examples of using GetFunction with TH1D objects in C++:

**Example 1:**

This example creates a new TH1D object, fills it with random numbers from a Gaussian distribution, and then extracts the Gaussian function fit using the GetFunction method. The resulting function can then be used for further analysis, such as plotting or parameter extraction.

**Example 2:**

Here are some examples of using GetFunction with TH1D objects in C++:

TH1D* hist = new TH1D("hist","Histogram",100,0,1); hist->FillRandom("gaus", 10000); TF1* gaussFit = hist->GetFunction("gaus");

This example creates a new TH1D object, fills it with random numbers from a Gaussian distribution, and then extracts the Gaussian function fit using the GetFunction method. The resulting function can then be used for further analysis, such as plotting or parameter extraction.

TH1D* hist = new TH1D("hist","Histogram",50,0,10); hist->FillRandom("expo", 10000); TF1* exponentialFit = hist->GetFunction("expo"); Double_t integral = exponentialFit->Integral(2,8);This example creates a new TH1D object and fills it with random numbers from an exponential distribution. It then extracts the exponential function fit using GetFunction and calculates the definite integral of the function between the x-axis limits of 2 to 8, storing the result in the "integral" variable for further use. In both of these examples, the ROOT data analysis framework is used to generate and analyze simulated data sets. ROOT is an open-source project developed by CERN, the European Organization for Nuclear Research, and is freely available to the scientific community.

Frequently Used Methods

Frequently Used Methods

Frequently Used Methods

Frequently Used Methods