TODOs

• Implement JPEG-LS (done)
• Ensure all current tests pass
• Ensure that memmap works, memory usage should not exceed some threshold, and only the required sections should be decompressed
• Ensure that .section works, memory usage should not exceed some threshold, and only the required sections should be decompressed

(not actually sure yet why we have both of those options)

• Consider implementing dask for parallel encoding and decoding
• Consider implementing JPEG-XL for even (slightly) better compression performance? Probably not for now, minimal gains
• Later... complete "practical astro compression" in C and implement that.

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The Astropy Project is a community effort to develop a single core package for astronomy in Python and foster interoperability between packages used in the field. This repository contains the core library.

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Installation

To install astropy from PyPI, use:

pip install astropy

For more detailed instructions, see the install guide in the docs.

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The Astropy Project is made both by and for its users, so we welcome and encourage contributions of many kinds. Our goal is to keep this a positive, inclusive, successful, and growing community that abides by the Astropy Community Code of Conduct.

For guidance on contributing to or submitting feedback for the Astropy Project, see the contributions page. For contributing code specifically, the developer docs have a guide with a quickstart. There's also a summary of contribution guidelines.

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See the acknowledgement and citation guide and the CITATION file.

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License

Astropy is licensed under a 3-clause BSD style license - see the LICENSE.rst file.