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ROOT v6.18/00 released!

Hi,

The ROOT team is happy (and a bit proud!) to let you know that ROOT v6.18/00 is released! See the release page for more info and download links.

Highlights are certainly:

  • A new builtin zlib libbrary, that’s based on CMS’s fork of the Cloudflare implementation. It noticeably accelerates decompression on current CPUs.
  • A simple auto obj = dir->Get<MyClass>("some object"); (where dir can be a file)
  • Pythonizations for RDataFrame providing AsNumPy
  • New leaf types /f, /d for Float16_t and Double32_t: tree->Branch("floatArray", floatArray, "floatArray[7]/f[0,100]"); // Float16_t array with range from 0 to 100
  • Several new functions for RVec, e.g. DeltaR
  • The RooJohnson PDF was added to RooFit
  • Considerably faster, STL-style iteration through RooArgSet and RooArgList
  • Transparency for lines, texts and markers in the TeX output.
  • Many new features in JSROOT, including initial WebVR support thanks to Diego Marcos (get your Cardboards ready!)
  • Added support for GCC9, macos 10.15 (Catalina beta 2) and Xcode 11.0 beta

Thanks to everyone involved: developers, contributors (e.g for the Float16_t / Double32_t leaf!), people reporting bugs, and of course our users!

If you have an idea how to improve ROOT or if something doesn’t work for you then please open a new topic in this forum and let us know. It’s much easier to improve when we know your issues!

Enjoy ROOT v6.18/00 and your summer!

Axel, for the whole ROOT team

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