Difference: HiggsAnalysisAtATLASUsingRooStats (21 vs. 22)

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HistFactory

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General description

The HistFactory can be used to run an analysis without being a RooFit/RooStats expert. In a nutshell, ROOT files containing input histograms are set up and XML files are set up for those input ROOT files. The XML files specify details on the histograms and specify how RooFit should interpret the information in the files. An little executable contained in ROOT called hist2workspace is used to import the histograms into a RooFit workspace appropriately.

 

prepareHistFactory

The ROOT release ships with a script called prepareHistFactory and a binary file called hist2workspace in the $ROOTSYS/bin directories. prepareHistFactory prepares a working area. It creates results/, data/ and config/ directories. It copies the HistFactorySchema.dtd and example XML files into the config/ directory. Also, it copies a ROOT file into the data/ directory for use with the examples.

HistFactorySchema.dtd

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HistFactorySchema.dtd: This file is located in $ROOTSYS/etc/ specifies the XML schema. It is typically placed in the config/ direc-tory of a working area together with the top-level XML file and the individual channel XML files. The user should not modify this file. The HistFactorySchema.dtd is commented to specify exactly the meaning of the various options.
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HistFactorySchema.dtd: This file is located in $ROOTSYS/etc/ specifies the XML schema. It is typically placed in the config/ directory of a working area together with the top-level XML file and the individual channel XML files. The user should not modify this file. The HistFactorySchema.dtd is commented to specify exactly the meaning of the various options.
 

hist2workspace

 
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