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Release 2.2.0

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@FrancescAlted FrancescAlted released this 04 Apr 12:24
· 2425 commits to main since this release
v2.2.0
043eab4

  • New bytedelta filter. We have blogged about this: https://www.blosc.org/posts/bytedelta-enhance-compression-toolset/. See the examples/ndarray/bytedelta_filter.py for a sample script. We also have a short video on how bytedelta works: https://www.youtube.com/watch?v=5OXs7w2x6nw

  • The compression defaults are changed to get a better balance between compression ratio, compression speed and decompression speed. The new defaults are:

    • cparams.typesize = 8
    • cparams.clevel = 1
    • cparams.compcode = Codec.ZSTD
    • filters = [Filter.SHUFFLE]
    • splitmode = SplitMode.ALWAYS_SPLIT

    These changes are based on the experiments performed in the blog post above.

  • dtype.itemsize will have preference over typesize in cparams (as it was documented).

  • blosc2.compressor_list(plugins=False) do not list codec plugins by default now. If you want to list plugins too, you need to pass plugins=True.

  • Internal C-Blosc2 updated to latest version (2.8.0).

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