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Package pyana

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Module event

This module is a collection of classes and methods to deal with the event data and everything related to it.

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Class Event

Construction

Usage: evt = pyana.event.Event(dg)

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This is the primary method to access EPICS information in pyana jobs.

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Module histo

This module is a collection classes and methods to create and manage histograms from user analysis modules.

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Class HistoMgrRoot

This class represents histogram manager implementation based on ROOT library. Histograms that are created by this manager reside either in memory or in a ROOT file.

Construction

Usage: hmgr = pyana.histo.HistoMgrRoot(...)

Creates new histogram manager object. Users should not instantiate new objects, instead the environment method hmgr() should be used to obtain existing manager object.

Keyword arguments:

• file – name of the ROOT file to store histograms, if missing then histograms will be memory-resident

Method h1d

Usage: hist = hmgr.h1d(...)

Creates 1-dimensional histogram with bin contents stored as double precision numbers.

Method accepts the same arguments as the constructors of the corresponding C++ ROOT class TH1D. The returned object also inherits most of the methods of the C++ class.

Method h1f

Usage: hist = hmgr.h1f(...)

Creates 1-dimensional histogram with bin contents stored as single precision numbers.

Method accepts the same arguments as the constructors of the corresponding C++ ROOT class TH1F. The returned object also inherits most of the methods of the C++ class.

Method h1i

Usage: hist = hmgr.h1i(...)

Creates 1-dimensional histogram with bin contents stored as integer numbers.

Method accepts the same arguments as the constructors of the corresponding C++ ROOT class TH1I. The returned object also inherits most of the methods of the C++ class.

Method h2d

Usage: hist = hmgr.h2d(...)

Creates 2-dimensional histogram with bin contents stored as double precision numbers.

Method accepts the same arguments as the constructors of the corresponding C++ ROOT class TH2D. The returned object also inherits most of the methods of the C++ class.

Method h2f

Usage: hist = hmgr.h2f(...)

Creates 2-dimensional histogram with bin contents stored as single precision numbers.

Method accepts the same arguments as the constructors of the corresponding C++ ROOT class TH2F. The returned object also inherits most of the methods of the C++ class.

Method h2i

Usage: hist = hmgr.h2i(...)

Creates 2-dimensional histogram with bin contents stored as integer numbers.

Method accepts the same arguments as the constructors of the corresponding C++ ROOT class TH2F. The returned object also inherits most of the methods of the C++ class.

Method prof

Usage: hist = hmgr.prof(...)

Creates 1-dimensional profile histogram with bin contents stored as double precision numbers.

Method accepts the same arguments as the constructors of the corresponding C++ ROOT class TProfile. The returned object also inherits most of the methods of the C++ class.

Method prof2d

Usage: hist = hmgr.prof2d(...)

Creates 2-dimensional profile histogram with bin contents stored as double precision numbers.

Method accepts the same arguments as the constructors of the corresponding C++ ROOT class TProfile2D. The returned object also inherits most of the methods of the C++ class.