RooFit Tutorials

These tutorials illustrate the main features of RooFit: the name of the examples and their short description help in figuring out their objective.

Files
file	rf101_basics.C
	Basic functionality: fitting, plotting, toy data generation on one-dimensional PDFs.
file	rf101_basics.py
	This tutorial illustrates the basic features of RooFit.
file	rf102_dataimport.C
	Basic functionality: importing data from ROOT TTrees and THx histograms.
file	rf102_dataimport.py
	'BASIC FUNCTIONALITY' RooFit tutorial macro #102 Importing data from ROOT TTrees and THx histograms
file	rf103_interprfuncs.C
	Basic functionality: interpreted functions and PDFs.
file	rf103_interprfuncs.py
	Basic functionality: interpreted functions and pdfs
file	rf104_classfactory.C
	Basic functionality: The class factory for functions and pdfs
file	rf104_classfactory.py
	Basic functionality: the class factory for functions and pdfs
file	rf105_funcbinding.C
	Basic functionality: binding ROOT math functions as RooFit functions and pdfs
file	rf105_funcbinding.py
	'BASIC FUNCTIONALITY' RooFit tutorial macro #105 Demonstration of binding ROOT Math functions as RooFit functions and pdfs
file	rf106_plotdecoration.C
	Basic functionality: adding boxes with parameters, statistics to RooPlots, decorating with arrows, text etc...
file	rf106_plotdecoration.py
	Basic functionality: adding boxes with parameters to RooPlots and decorating with arrows, etc...
file	rf107_plotstyles.C
	Basic functionality: various plotting styles of data, functions in a RooPlot
file	rf107_plotstyles.py
	Basic functionality: demonstration of various plotting styles of data, functions in a RooPlot
file	rf108_plotbinning.C
	Basic functionality: plotting unbinned data with alternate and variable binnings
file	rf108_plotbinning.py
	Basic functionality: plotting unbinned data with alternate and variable binnings
file	rf109_chi2residpull.C
	Basic functionality: Calculating chi^2 from histograms and curves in RooPlots, making histogram of residual and pull distributions
file	rf109_chi2residpull.py
	'BASIC FUNCTIONALITY' RooFit tutorial macro #109 Calculating chi^2 from histograms and curves in ROOT.RooPlots, making histogram of residual and pull distributions
file	rf110_normintegration.C
	Basic functionality: normalization and integration of pdfs, construction of cumulative distribution monodimensional functions
file	rf110_normintegration.py
	Basic functionality: examples on normalization and integration of pdfs, construction of cumulative distribution functions from monodimensional pdfs
file	rf111_derivatives.C
	Basic functionality: numerical 1st,2nd and 3rd order derivatives w.r.t.
file	rf111_derivatives.py
	Basic functionality: numerical 1st, and 3rd order derivatives w.r.t.
file	rf201_composite.C
	Addition and convolution: composite pdf with signal and background component
file	rf201_composite.py
	Addition and convolution: composite pdf with signal and background component
file	rf202_extendedmlfit.C
	Setting up an extended maximum likelihood fit.
file	rf202_extendedmlfit.py
	Addition and convolution: setting up an extended maximum likelihood fit
file	rf203_ranges.C
	Fitting and plotting in sub ranges.
file	rf203_ranges.py
	Addition and convolution: fitting and plotting in sub ranges
file	rf204a_extendedLikelihood.C
	Extended maximum likelihood fit in multiple ranges.
file	rf204a_extendedLikelihood.py
	Extended maximum likelihood fit in multiple ranges.
file	rf204b_extendedLikelihood_rangedFit.C
	This macro demonstrates how to set up a fit in two ranges for plain likelihoods and extended likelihoods.
file	rf204b_extendedLikelihood_rangedFit.py
	This macro demonstrates how to set up a fit in two ranges for plain likelihoods and extended likelihoods.
file	rf205_compplot.C
	Addition and convolution: options for plotting components of composite pdfs.
file	rf205_compplot.py
	Addition and convolution: options for plotting components of composite pdfs.
file	rf206_treevistools.C
	Addition and convolution: tools for visualization of RooAbsArg expression trees
file	rf206_treevistools.py
	Addition and convolution: tools for visualization of ROOT.RooAbsArg expression trees
file	rf207_comptools.C
	Addition and convolution: tools and utilities for manipulation of composite objects
file	rf207_comptools.py
	'ADDITION AND CONVOLUTION' RooFit tutorial macro #207 Tools and utilities for manipulation of composite objects
file	rf208_convolution.C
	Addition and convolution: one-dimensional numeric convolution
file	rf208_convolution.py
	'ADDITION AND CONVOLUTION' RooFit tutorial macro #208 One-dimensional numeric convolution (require ROOT to be compiled with –enable-fftw3)
file	rf209_anaconv.C
	Addition and convolution: decay function pdfs with optional B physics effects (mixing and CP violation)
file	rf209_anaconv.py
	Addition and convolution: decay function pdfs with optional B physics effects (mixing and CP violation) that can be analytically convolved with e.g.
file	rf210_angularconv.C
	Addition and convolution: convolution in cyclical angular observables theta
file	rf210_angularconv.py
	Convolution in cyclical angular observables theta, and construction of p.d.f in terms of transformed angular coordinates, e.g.
file	rf211_paramconv.C
	Addition and convolution: working with a pdf with a convolution operator in terms of a parameter
file	rf211_paramconv.py
	'ADDITION AND CONVOLUTION' RooFit tutorial macro #211 Working a with a p.d.f.
file	rf212_plottingInRanges_blinding.C
	Plot a PDF in disjunct ranges, and get normalisation right.
file	rf212_plottingInRanges_blinding.py
	Plot a PDF in disjunct ranges, and get normalisation right.
file	rf301_composition.C
	Multidimensional models: multi-dimensional pdfs through composition e.g.
file	rf301_composition.py
	Multidimensional models: multi-dimensional pdfs through composition, e.g.
file	rf302_utilfuncs.C
	Multidimensional models: utility functions classes available for use in tailoring of composite (multidimensional) pdfs
file	rf302_utilfuncs.py
	Multidimensional models: utility functions classes available for use in tailoring of composite (multidimensional) pdfs
file	rf303_conditional.C
	Multidimensional models: use of tailored pdf as conditional pdfs.s
file	rf303_conditional.py
	'MULTIDIMENSIONAL MODELS' RooFit tutorial macro #303 Use of tailored p.d.f as conditional p.d.fs.s
file	rf304_uncorrprod.C
	Multidimensional models: simple uncorrelated multi-dimensional pdfs
file	rf304_uncorrprod.py
	Multidimensional models: simple uncorrelated multi-dimensional pdfs
file	rf305_condcorrprod.C
	Multidimensional models: multi-dimensional pdfs with conditional pdfs in product
file	rf305_condcorrprod.py
	Multidimensional models: multi-dimensional pdfs with conditional pdfs in product
file	rf306_condpereventerrors.C
	Multidimensional models: conditional pdf with per-event errors
file	rf306_condpereventerrors.py
	Multidimensional models: complete example with use of conditional pdf with per-event errors
file	rf307_fullpereventerrors.C
	Multidimensional models: full pdf with per-event errors
file	rf307_fullpereventerrors.py
	Multidimensional models: usage of full pdf with per-event errors
file	rf308_normintegration2d.C
	Multidimensional models: normalization and integration of pdfs, construction of cumulative distribution functions from pdfs in two dimensions
file	rf308_normintegration2d.py
	Multidimensional models: normalization and integration of pdfs, construction of cumulative distribution functions from pdfs in two dimensions
file	rf309_ndimplot.C
	Multidimensional models: making 2/3 dimensional plots of pdfs and datasets
file	rf309_ndimplot.py
	Multidimensional models: making 2/3 dimensional plots of pdfs and datasets
file	rf310_sliceplot.C
	Multidimensional models: projecting pdf and data slices in discrete observables
file	rf310_sliceplot.py
	Multidimensional models: projecting pdf and data slices in discrete observables
file	rf311_rangeplot.C
	Multidimensional models: projecting pdf and data ranges in continuous observables
file	rf311_rangeplot.py
	Multidimensional models: projecting pdf and data ranges in continuous observables
file	rf312_multirangefit.C
	Multidimensional models: performing fits in multiple (disjoint) ranges in one or more dimensions
file	rf312_multirangefit.py
	Multidimensional models: performing fits in multiple (disjoint) ranges in one or more dimensions
file	rf313_paramranges.C
	Multidimensional models: working with parametrized ranges to define non-rectangular regions for fitting and integration
file	rf313_paramranges.py
	Multidimensional models: working with parameterized ranges to define non-rectangular regions for fitting and integration
file	rf314_paramfitrange.C
	Multidimensional models: working with parametrized ranges in a fit.
file	rf314_paramfitrange.py
	Multidimensional models: working with parameterized ranges in a fit.
file	rf315_projectpdf.C
	Multidimensional models: marginizalization of multi-dimensional pdfs through integration
file	rf315_projectpdf.py
	Multidimensional models: marginizalization of multi-dimensional pdfs through integration
file	rf316_llratioplot.C
	Multidimensional models: using the likelihood ratio technique to construct a signal enhanced one-dimensional projection of a multi-dimensional pdf
file	rf316_llratioplot.py
	Multidimensional models: using the likelihood ratio technique to construct a signal enhanced one-dimensional projection of a multi-dimensional pdf
file	rf401_importttreethx.C
	Data and categories: advanced options for importing data from ROOT TTree and THx histograms
file	rf401_importttreethx.py
	'DATA AND CATEGORIES' RooFit tutorial macro #401
file	rf402_datahandling.C
	Data and categories: tools for manipulation of (un)binned datasets
file	rf402_datahandling.py
	Data and categories: tools for manipulation of (un)binned datasets
file	rf403_weightedevts.C
	Data and categories: using weights in unbinned datasets
file	rf403_weightedevts.py
	'DATA AND CATEGORIES' RooFit tutorial macro #403
file	rf404_categories.C
	Data and categories: working with RooCategory objects to describe discrete variables
file	rf404_categories.py
	Data and categories: working with ROOT.RooCategory objects to describe discrete variables
file	rf405_realtocatfuncs.C
	Data and categories: demonstration of real-->discrete mapping functions
file	rf405_realtocatfuncs.py
	Data and categories: demonstration of real-discrete mapping functions
file	rf406_cattocatfuncs.C
	Data and categories: demonstration of discrete-->discrete (invertible) functions
file	rf406_cattocatfuncs.py
	Data and categories: demonstration of discrete-discrete (invertable) functions
file	rf407_latextables.C
	Data and categories: latex printing of lists and sets of RooArgSets
file	rf407_latextables.py
	Data and categories: latex printing of lists and sets of RooArgSets
file	rf408_RDataFrameToRooFit.C
	Fill RooDataSet/RooDataHist in RDataFrame.
file	rf408_RDataFrameToRooFit.py
	Fill RooDataSet/RooDataHist in RDataFrame.
file	rf409_NumPyPandasToRooFit.py
	Convert between NumPy arrays or Pandas DataFrames and RooDataSets.
file	rf501_simultaneouspdf.C
	Organisation and simultaneous fits: using simultaneous pdfs to describe simultaneous fits to multiple datasets
file	rf501_simultaneouspdf.py
	Organization and simultaneous fits: using simultaneous pdfs to describe simultaneous fits to multiple datasets
file	rf502_wspacewrite.C
	Organisation and simultaneous fits: creating and writing a workspace
file	rf502_wspacewrite.py
	Organization and simultaneous fits: creating and writing a workspace
file	rf503_wspaceread.C
	Organisation and simultaneous fits: reading and using a workspace
file	rf503_wspaceread.py
	'ORGANIZATION AND SIMULTANEOUS FITS' RooFit tutorial macro #503
file	rf504_simwstool.C
	Organisation and simultaneous fits: using RooSimWSTool to construct a simultaneous pdf that is built of variations of an input pdf
file	rf504_simwstool.py
	Organization and simultaneous fits: using RooSimWSTool to construct a simultaneous pdf that is built of variations of an input pdf
file	rf505_asciicfg.C
	Organisation and simultaneous fits: reading and writing ASCII configuration files
file	rf505_asciicfg.py
	Organization and simultaneous fits: reading and writing ASCII configuration files
file	rf506_msgservice.C
	Organisation and simultaneous fits: tuning and customizing the RooFit message logging facility
file	rf506_msgservice.py
	Organization and simultaneous fits: tuning and customizing the ROOT.RooFit message logging facility
file	rf508_listsetmanip.C
	Organization and simultaneous fits: RooArgSet and RooArgList tools and tricks
file	rf508_listsetmanip.py
	'ORGANIZATION AND SIMULTANEOUS FITS' RooFit tutorial macro #508
file	rf509_wsinteractive.C
	Organization and simultaneous fits: easy interactive access to workspace contents - CINT to CLING code migration
file	rf509_wsinteractive.py
	Organization and simultaneous fits: easy interactive access to workspace contents - CINT to CLING code migration
file	rf510_wsnamedsets.C
	Organization and simultaneous fits: working with named parameter sets and parameter snapshots in workspaces
file	rf510_wsnamedsets.py
	'ORGANIZATION AND SIMULTANEOUS FITS' RooFit tutorial macro #510
file	rf511_wsfactory_basic.C
	Organization and simultaneous fits: basic use of the 'object factory' associated with a workspace to rapidly build pdfs functions and their parameter components
file	rf511_wsfactory_basic.py
	Organization and simultaneous fits: basic use of the 'object factory' associated with a workspace to rapidly build pdfs functions and their parameter components
file	rf512_wsfactory_oper.C
	Organization and simultaneous fits: operator expressions and expression-based basic pdfs in the workspace factory syntax
file	rf512_wsfactory_oper.py
	'ORGANIZATION AND SIMULTANEOUS FITS' RooFit tutorial macro #512
file	rf513_wsfactory_tools.C
	Organization and simultaneous fits: RooCustomizer and RooSimWSTool interface in factory workspace tool in a complex standalone B physics example
file	rf513_wsfactory_tools.py
	Organization and simultaneous fits: illustration use of ROOT.RooCustomizer and ROOT.RooSimWSTool interface in factory workspace tool in a complex standalone B physics example
file	rf514_RooCustomizer.C
	Using the RooCustomizer to create multiple PDFs that share a lot of properties, but have unique parameters for each category.
file	rf514_RooCustomizer.py
	Using the RooCustomizer to create multiple PDFs that share a lot of properties, but have unique parameters for each category.
file	rf515_hfJSON.py
	Code HistFactory Models in JSON.
file	rf601_intminuit.C
	Likelihood and minimization: interactive minimization with MINUIT
file	rf601_intminuit.py
	'LIKELIHOOD AND MINIMIZATION' RooFit tutorial macro #601
file	rf602_chi2fit.C
	Likelihood and minimization: setting up a chi^2 fit to a binned dataset
file	rf602_chi2fit.py
	'LIKELIHOOD AND MINIMIZATION' RooFit tutorial macro #602
file	rf603_multicpu.C
	Likelihood and minimization: setting up a multi-core parallelized unbinned maximum likelihood fit
file	rf603_multicpu.py
	Likelihood and minimization: setting up a multi-core parallelized unbinned maximum likelihood fit
file	rf604_constraints.C
	Likelihood and minimization: fitting with constraints
file	rf604_constraints.py
	Likelihood and minimization: fitting with constraints
file	rf605_profilell.C
	Likelihood and minimization: working with the profile likelihood estimator
file	rf605_profilell.py
	'LIKELIHOOD AND MINIMIZATION' RooFit tutorial macro #605
file	rf606_nllerrorhandling.C
	Likelihood and minimization: understanding and customizing error handling in likelihood evaluations
file	rf606_nllerrorhandling.py
	'LIKELIHOOD AND MINIMIZATION' RooFit tutorial macro #606
file	rf607_fitresult.C
	Likelihood and minimization: demonstration of options of the RooFitResult class
file	rf607_fitresult.py
	Likelihood and minimization: demonstration of options of the RooFitResult class
file	rf608_fitresultaspdf.C
	Likelihood and minimization: representing the parabolic approximation of the fit as a multi-variate Gaussian on the parameters of the fitted pdf
file	rf608_fitresultaspdf.py
	Likelihood and minimization: representing the parabolic approximation of the fit as a multi-variate Gaussian on the parameters of the fitted pdf
file	rf609_xychi2fit.C
	Likelihood and minimization: setting up a chi^2 fit to an unbinned dataset with X,Y,err(Y) values (and optionally err(X) values)
file	rf609_xychi2fit.py
	Likelihood and minimization: setting up a chi^2 fit to an unbinned dataset with X,Y,err(Y) values (and optionally err(X) values)
file	rf610_visualerror.C
	Likelihood and minimization: visualization of errors from a covariance matrix
file	rf610_visualerror.py
	Likelihood and minimization: visualization of errors from a covariance matrix
file	rf611_weightedfits.C
	Likelihood and minimization: Parameter uncertainties for weighted unbinned ML fits
file	rf612_recoverFromInvalidParameters.C
	Likelihood and minimization: Recover from regions where the function is not defined.
file	rf612_recoverFromInvalidParameters.py
	Likelihood and minimization: Recover from regions where the function is not defined.
file	rf613_global_observables.C
	This tutorial explains the concept of global observables in RooFit, and showcases how their values can be stored either in the model or in the dataset.
file	rf613_global_observables.py
	This tutorial explains the concept of global observables in RooFit, and showcases how their values can be stored either in the model or in the dataset.
file	rf614_binned_fit_problems.C
	A tutorial that explains you how to solve problems with binning effects and numerical stability in binned fits.
file	rf614_binned_fit_problems.py
	A tutorial that explains you how to solve problems with binning effects and numerical stability in binned fits.
file	rf615_simulation_based_inference.py
	Use Simulation Based Inference (SBI) in RooFit.
file	rf616_morphing.C
	Use Morphing in RooFit.
file	rf616_morphing.py
	Use Morphing in RooFit.
file	rf617_simulation_based_inference_multidimensional.py
	Use Simulation Based Inference (SBI) in multiple dimensions in RooFit.
file	rf618_mixture_models.py
	Use of mixture models in RooFit.
file	rf701_efficiencyfit.C
	Special pdf's: unbinned maximum likelihood fit of an efficiency eff(x) function
file	rf701_efficiencyfit.py
	Special pdf's: unbinned maximum likelihood fit of an efficiency eff(x) function to a dataset D(x,cut), cut is a category encoding a selection, which the efficiency as function of x should be described by eff(x)
file	rf702_efficiencyfit_2D.C
	Special pdf's: unbinned maximum likelihood fit of an efficiency eff(x) function to a dataset D(x,cut), cut is a category encoding a selection whose efficiency as function of x should be described by eff(x)
file	rf702_efficiencyfit_2D.py
	Special pdf's: unbinned maximum likelihood fit of an efficiency eff(x) function to a dataset D(x,cut), cut is a category encoding a selection whose efficiency as function of x should be described by eff(x)
file	rf703_effpdfprod.C
	Special pdf's: using a product of an (acceptance) efficiency and a pdf as pdf
file	rf703_effpdfprod.py
	Special pdf's: using a product of an (acceptance) efficiency and a pdf as pdf
file	rf704_amplitudefit.C
	Special pdf's: using a pdf defined by a sum of real-valued amplitude components
file	rf704_amplitudefit.py
	Special pdf's: using a pdf defined by a sum of real-valued amplitude components
file	rf705_linearmorph.C
	Special pdf's: linear interpolation between pdf shapes using the 'Alex Read' algorithm
file	rf705_linearmorph.py
	'SPECIAL PDFS' RooFit tutorial macro #705
file	rf706_histpdf.C
	Special pdf's: histogram-based pdfs and functions
file	rf706_histpdf.py
	Special pdf's: histogram based pdfs and functions
file	rf707_kernelestimation.C
	Special pdf's: using non-parametric (multi-dimensional) kernel estimation pdfs
file	rf707_kernelestimation.py
	Special pdf's: using non-parametric (multi-dimensional) kernel estimation pdfs
file	rf708_bphysics.C
	Special pdf's: special decay pdf for B physics with mixing and/or CP violation
file	rf708_bphysics.py
	Special pdf's: special decay pdf for B physics with mixing and/or CP violation
file	rf709_BarlowBeeston.C
	Implementing the Barlow-Beeston method for taking into account the statistical uncertainty of a Monte-Carlo fit template.
file	rf709_BarlowBeeston.py
	Implementing the Barlow-Beeston method for taking into account the statistical uncertainty of a Monte-Carlo fit template.
file	rf710_roopoly.C
	Taylor expansion of RooFit functions using the taylorExpand function with RooPolyFunc
file	rf710_roopoly.py
	Taylor expansion of RooFit functions using the taylorExpand function
file	rf711_lagrangianmorph.C
	Morphing effective field theory distributions with RooLagrangianMorphFunc A morphing function as a function of one coefficient is setup and can be used to obtain the distribution for any value of the coefficient.
file	rf711_lagrangianmorph.py
	Morphing effective field theory distributions with RooLagrangianMorphFunc.
file	rf712_lagrangianmorphfit.C
	Performing a simple fit with RooLagrangianMorphFunc.
file	rf712_lagrangianmorphfit.py
	Performing a simple fit with RooLagrangianMorphFunc
file	rf801_mcstudy.C
	Validation and MC studies: toy Monte Carlo study that perform cycles of event generation and fitting
file	rf801_mcstudy.py
	Validation and MC studies: toy Monte Carlo study that perform cycles of event generation and fitting
file	rf802_mcstudy_addons.C
	Validation and MC studies: RooMCStudy - using separate fit and generator models, using the chi^2 calculator model Running a biased fit model against an optimal fit.
file	rf803_mcstudy_addons2.C
	Validation and MC studies: RooMCStudy - Using the randomizer and profile likelihood add-on models
file	rf804_mcstudy_constr.C
	Validation and MC studies: using RooMCStudy on models with constrains
file	rf901_numintconfig.C
	Numeric algorithm tuning: configuration and customization of how numeric (partial) integrals are executed
file	rf901_numintconfig.py
	Numeric algorithm tuning: configuration and customization of how numeric (partial) integrals are executed
file	rf902_numgenconfig.C
	Numeric algorithm tuning: configuration and customization of how MC sampling algorithms on specific pdfs are executed
file	rf902_numgenconfig.py
	Numeric algorithm tuning: configuration and customization of how MC sampling algorithms on specific pdfs are executed
file	rf903_numintcache.C
	Numeric algorithm tuning: caching of slow numeric integrals and parameterization of slow numeric integrals
file	rf903_numintcache.py
	Numeric algorithm tuning: caching of slow numeric integrals and parameterizations of slow numeric integrals