Chandra Announcement: Sherpa 4.12.2 package for Python released

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Tara Gokas

Oct 28, 2020, 12:56:46 PM10/28/20
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Release of the Sherpa 4.12.2 package for Python.

The Sherpa 4.12.2 package for Python was released on October 27, 2020. This version fully supports Python 3.8 in addition to older Python 3.6 and 3.7 versions.  

For details and installation instructions go to

Major enhancements are in the following parts of the Sherpa functionality:

  • plotting improvements
    • improved support for matplotlib (linestyle changes in matplotlib 3.3, support of alpha channels)
    • overplot support for plot_fit_* plt_bkg_fit_*
    • updates to histograms, residual plots
  • data I/O and data handling
    • several bug fixes to handling of the PHA, ARF, RMF files
  • modeling
    • support for regrid models in the binary expressions
    • improvements and bug fixes to background treatment in spectral models
    • improvements in the flux calculations and resampling
    • added the Voigt model
  • documentation changes
    • improvements to Sherpa display in IPython/Jupyter notebooks
    • updates to the content of the docstrings for generation of ahelp files

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