xarray: N-D labeled arrays and datasets in Python#

xarray (formerly xray) is an open source project and Python package that makes working with labelled multi-dimensional arrays simple, efficient, and fun!

Xarray introduces labels in the form of dimensions, coordinates and attributes on top of raw NumPy-like arrays, which allows for a more intuitive, more concise, and less error-prone developer experience. The package includes a large and growing library of domain-agnostic functions for advanced analytics and visualization with these data structures.

Xarray is inspired by and borrows heavily from pandas, the popular data analysis package focused on labelled tabular data. It is particularly tailored to working with netCDF files, which were the source of xarray’s data model, and integrates tightly with dask for parallel computing.

Get in touch#

  • If you have a question like “How do I concatenate a list of datasets?”, ask on GitHub discussions or StackOverflow. Please include a self-contained reproducible example if possible.

  • Report bugs, suggest features or view the source code on GitHub.

  • For less well defined questions or ideas, or to announce other projects of interest to xarray users, use GitHub discussions or the mailing list.

NumFOCUS#

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Xarray is a fiscally sponsored project of NumFOCUS, a nonprofit dedicated to supporting the open source scientific computing community. If you like Xarray and want to support our mission, please consider making a donation to support our efforts.

History#

Xarray is an evolution of an internal tool developed at The Climate Corporation. It was originally written by Climate Corp researchers Stephan Hoyer, Alex Kleeman and Eugene Brevdo and was released as open source in May 2014. The project was renamed from “xray” in January 2016. Xarray became a fiscally sponsored project of NumFOCUS in August 2018.

License#

Xarray is available under the open source Apache License.