core.matrix provides array programming as a language extension for Clojure, with a focus on numerical computing.
The central objective of core.matrix
is to make matrix and array programming
idiomatic, productive, elegant and fast in the Clojure environment.
(+ [[1 2]
[3 4]]
(* (identity-matrix 2) 3.0))
=> [[4.0 2.0]
[3.0 7.0]]
;; Note: nested Clojure vectors can be used as matrices
Key goals of core.matrix:
- Provide a clear, standard API / abstraction for matrix and array programming in Clojure
- Enable pluggable support for different underlying matrix library implementations
- Provide general purpose n-dimensional array implementations
- Provide a foundation for other projects in the ecosystem (e.g. Incanter)
- Enable high performance numerical computing
- Allow idiomatic Clojure coding for numerical code
For general core.matrix
documentation and examples see the Wiki:
API documentation is available here
For a general introduction, the slide and video from the 2013 Clojure Conj talk are available here:
- http://www.slideshare.net/mikeranderson/2013-1114-enter-thematrix
- http://www.youtube.com/watch?v=_h9TLJtjSJo
core.matrix
is fully functional and usable in production applications. As well as supporting
the standard Clojure data structures, multiple back end implementations exist that provide optimised
matrix implementations. The most mature implementations are currently:
- vectorz-clj : a fast pure-JVM matrix library for Clojure
- Clatrix : native code matrix library using BLAS
- NDArray : a general purpose pure Clojure N-dimensional array implementation, included as part of
core.matrix
itself
The API is relatively mature but still subject to some changes at present (at least up until release 1.0.0), so users should be prepared to deal with potential breaking changes when updating to future releases.
The plan is to become an official Clojure Contrib language extension once the API has been well tested.
All contributions / ideas welcome!
There are a number of proposed enhancements listed as GitHub issues: these are a good place to start if you wish to contribute to core.matrix:
If you wish to contribute code, please ensure you have a Clojure Contributors Agreement signed and on file. For more information see:
Discussions related to core.matrix generally take place on the "Numerical Clojure" group:
If you are interested in writing a core.matrix
implementation, see:
You can also find a protocol implementation summary here:
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