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How To

Developer's Tips
Graphics and GUI
Histograms
Input/Output
Jupyter Notebooks
Language Bindings
Legacy
Linear Algebra
Multicore
Trees
Type System
Virtual Monte Carlo
Writing a Graphical User Interface

Language Bindings

How To Call CERNLIB Routines from CINT?
How to inherit a C++ class from Python?
How to Invoke FORTAN Routines from Cling?
How to Use Mathematica from ROOT?
How to Use PyROOT, the ROOT Python Bindings?
How to Use R in ROOT with the ROOT-R Interface?
How to Use the Ruby Interpreter ?
How to Write a TTree in Python?

Legacy

How to Convert from PAW?
How to Convert HBOOK/PAW Files to ROOT Files?
How to Generate HTML Documentation
How to Use Reflex?

Type System

How To Create a Dictionary?
How to Understand a Class Structure?

Jupyter Notebooks

How to create a ROOTbook?
How to Use ROOT in a Notebook?

Graphics and GUI

How to Create an Axis with Time Units?
How to Create or Modify a Style?
How to draw an object with special characters in its name ?
How to Draw Objects?
How to Embed a TCanvas in External Applications?
How to let graphics primitives respond to a mouse click?
How to Pick Objects?
How to redraw Axis and plot borders?
How to reuse a color palette ?
How to set ranges on axis?
How to Use the Graphics Editor?
How to use the PostScript interface?

Linear Algebra

How to Create and Fill a Matrix?
How to Fit Histograms or Data Points?
How to fit using the FitPanel
How to Invert a Matrix
How to Perform a Linear Fit?

Multicore

How to express parallelism on many cores?

Histograms

How to Find Peaks in Histograms ?
How to Get Started with Histogram Classes?
How To Merge Histogram Files?

Input/Output

How to Merge Custom Objects?
How to Quickly Inspect the Content of a File?
How to Read Objects from a File?
How to Read Remote Files?
How to use the ClassDef Preprocessor Macro?
How to Write Objects to a File?

Trees

How to Read a Tree?
How to Use Chains (Lists of Files)?
How to Write a Tree?

Developer's Tips

How To Suppress Understood Valgrind False Positives?
Integrate ROOT into my project with CMake
Report a bug with JIRA
Running ROOT tests

Writing a Graphical User Interface

How to Use the ROOT GUI Builder?
How to Use the Signal/Slot Communication Mechanism?

Virtual Monte Carlo

How to Use Virtual Monte Carlo?