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Hist classes and utilities

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Development for Hist. See for information on setting up a development environment.

Hist is a analyst friendly front-end for boost-histogram.

Hist augments metadata by adding names to axes; these are highly recommend and will help you track axes. There is also a special NamedHist, which will enforce all hist axes have names, and all axes will require named access.

  • name= is a unique label describing each axis
  • title= is an optional string that is used in plotting (defaults to name if not provided)
  • Indexing, projection, and more support named axes.

The Hist class augments the bh.Histogram class with the following shortcuts, designed for interactive exploration without extensive imports:

  • Optional import-free construction system
  • Quick import-free data-coordinates and rebin syntax (use a j suffix for numbers, or strings directly in indexing expressions)

Quick plotting routines encourage exploration:

  • .plot() provides 1D and 2D plots
  • .plot2d_full() shows 1D projects around a 2D plot
  • .plot_pull(...) performs a pull plot

Support for this work was provided by the National Science Foundation cooperative agreement OAC-1836650 (IRIS-HEP) and OAC-1450377 (DIANA/HEP). Any opinions, findings, conclusions or recommendations expressed in this material are those of the authors and do not necessarily reflect the views of the National Science Foundation.

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