ndarray-stats

Library Featured

Statistical routines for the n-dimensional array data structures provided by ndarray.

Jobs: Math and science
Category: Tensors and math
Part of ndarray.

Checked 9 Nov 2026 · Sources

Downloads: 592,313
Dependents: 115
Stars: 239
Forks: 35
Contributors: 14
Commits: 138
Latest release: 0.7.0 · 10 months ago

About

From the project README · 6 Nov 2026

This crate provides statistical methods for ndarray's ArrayRef type.

Currently available routines include:

order statistics (minimum, maximum, median, quantiles, etc.);
summary statistics (mean, skewness, kurtosis, central moments, etc.)
partitioning;
correlation analysis (covariance, pearson correlation);
measures from information theory (entropy, KL divergence, etc.);
deviation functions (distances, counts, errors, etc.);
histogram computation.

See the documentation for more information.

Please feel free to contribute new functionality! A roadmap can be found here.

Using with Cargo

[dependencies]
ndarray = "0.17.1"
ndarray-stats = "0.7.0"

Read the full README

Releases

0.7.0
- Breaking changes
  - Minimum supported Rust version: 1.65.0
  - Updated to ndarray:v0.17.1
0.6.0
- Breaking changes
  - Minimum supported Rust version: 1.64.0
  - Updated to ndarray:v0.16.0
  - Updated to approx:v0.5.0
- Updated to ndarray-rand:v0.15.0
- Updated to indexmap:v2.4
- Updated to itertools:v0.13
Contributors: @bluss
0.5.1
- Fixed bug in implementation of MaybeNaN::remove_nan_mut for f32 and f64 for views with non-standard layouts. Before this fix, the bug could cause incorrect results, buffer overflows, etc., in this method and others which use it. Thanks to @JacekCzupyt for reporting the issue (#89).
- Minor docs improvements.
Contributors: @jturner314, @BenMoon
0.5.0
- Breaking changes
  - Minimum supported Rust version: 1.49.0
  - Updated to ndarray:v0.15.0
Contributors: @Armavica, @cassiersg
0.4.0
- Breaking changes
  - Minimum supported Rust version: 1.42.0
- New functionality:
  - Summary statistics:
    - Weighted variance
    - Weighted standard deviation
- Improvements / breaking changes:
  - Documentation improvements for Histograms
  - Updated to ndarray:v0.14.0
Contributors: @munckymagik, @nilgoyette, @LukeMathWalker, @lebensterben, @xd009642
0.3.0
- Breaking changes
  - Minimum supported Rust version: 1.37
- New functionality:
  - Deviation functions:
    - Counts equal/unequal
    - l1, l2, linf distances
    - (Root) mean squared error
    - Peak signal-to-noise ratio
  - Summary statistics:
    - Weighted sum
    - Weighted mean
- Improvements / breaking changes:
  - Updated to ndarray:v0.13.0
Contributors: @munckymagik, @nilgoyette, @jturner314, @LukeMathWalker
0.2.0
- Breaking changes
  - All ndarray-stats' extension traits are now impossible to implement by users of the library (see #34)
  - Redesigned error handling across the whole crate, standardising on Result
- New functionality:
  - Summary statistics:
    - Harmonic mean
    - Geometric mean
    - Central moments
    - Kurtosis
    - Skewness
  - Information theory:
    - Entropy
    - Cross-entropy
    - Kullback-Leibler divergence
  - Quantiles and order statistics:
    - argmin / argmin_skipnan
    - argmax / argmax_skipnan
    - Optimized bulk quantile computation (quantiles_mut, quantiles_axis_mut)
- Fixes:
  - Reduced occurrences of overflow for interpolate::midpoint
Contributors: @jturner314, @LukeMathWalker, @phungleson, @munckymagik
0.1.0
- Initial release by @LukeMathWalker and @jturner314.

Contributing

Please feel free to create issues and submit PRs.

License

Licensed under the Apache License, Version 2.0, or the MIT license, at your option. You may not use this project except in compliance with those terms.

Compatibility

How each fact is measured

Runs on: GPU support unknown

What shows it

no dependency or feature matches a backend row
Native code: None found

No native code found
Python bindings: No Python binding crate found
License: Apache-2.0 OR MIT

Compare with similar projects

Order: strongest tier first, then most downloads, then name, with unmeasured values last. A library counts downloads over 30 days. An app counts binary downloads per release. An app with none counts its crate downloads over 30 days. ML Rust runs this catalogue, so its closest project always gets a row.

ndarray-stats beside the projects that share a topic with it
Project	Downloads	Dependents	Stars	Latest release	Runs on (GPU)	Native code	License
ndarray-stats This page Featured Statistical routines for the n-dimensional array data structures provided by ndarray.	592,313 downloads over 30 days	115	239	0.7.028 Dec 2025	GPU support unknown	No native code found	Apache-2.0 OR MIT
ndarray Featured An n-dimensional array for general elements and for numerics. Lightweight array views and slicing; views support chunking and splitting. and 1 related project	13,748,379 downloads over 30 days	2,888	4,344	0.17.210 Jan 2026	GPU support unknown	Binds native code: cblas-sys (feature blas)	Apache-2.0 OR MIT
statrs Featured Statistical computing library for Rust	4,515,476 downloads over 30 days	444	839	0.19.111 Aug 2026	GPU support unknown	No native code found	MIT
linfa-linalg Listed Dormant Pure-Rust implementation of linear algebra routines for ndarray	198,623 downloads over 30 days	20	39	0.2.115 May 2025	GPU support unknown	No native code found	Apache-2.0 OR MIT
ndarray-interp Listed Interpolation package for ndarray	158,299 downloads over 30 days	4	12	0.6.022 Jan 2026	GPU support unknown	No native code found	MIT
numr Listed The base for numerical code in Rust, in the role NumPy has in Python: n-dimensional tensors, linear algebra, FFT, statistics and autograd on CPU, CUDA and WebGPU. The backends use native kernels, with no cuBLAS, MKL or other vendor math library.	1,673 downloads over 30 days	7	59	0.15.26 Nov 2026	CUDA, WebGPU	Binds native code: ring (feature distributed)	Apache-2.0

Compare these

All projects in Math and science

Why FeaturedIt passes every Featured gate.

What it meets

It has 43 active dependents and 20 new dependents in 365 days. Featured needs 11 active dependents or 9 new dependents in 365 days.
Active dependents are at 92% of their peak. Featured needs at least 50%.
Docs are present. The release commit or a manifest ties the crate to the repository.
No vulnerability advisory stays unpatched past the grace window. At least one version is neither a prerelease nor 0.0.x.
The last activity is on 28 Dec 2025, 316 days ago. The rules expect an update within 560 days. Dormancy rule

What else the check found

The oldest outside issue waits 2408 days for a reply, past the limit of 270. No maintainer replied in 365 days. Rot signals rule

Exact rules: Featured library. The check on 9 Nov 2026 applied thresholds version 9.

Every rule outcome, as the check records it

expected-interval: version 0.7.0 base 140, doubled for 592313 downloads per month, doubled for 43 active users: E = 560 days
dormancy: last activity 2025-12-28, 316 days ago, E = 560: active
rot: oldest unanswered issue 2408 days (limit 270), no maintainer reply in 365 days
featured: featured: active_users 43, new_adopters 20, former_glory 0.92

Measurements and sources

Each signal row shows the raw value, its source and the fetch date. The Sources list gathers every distinct source on this page. Movement needs more history.

Sources6 sources

Description: the crates.io description
crates.io database dump, fetched 8 Nov 2026
RustSec advisory database, fetched 8 Nov 2026
GitHub repository, fetched 9 Nov 2026
crates.io package, fetched 6 Nov 2026
GitHub contributors, fetched 6 Nov 2026

Adoption43 active dependents, 20 new dependents in 365 days1 not measured

Adoption measurements
Signal	Value	Source	Fetched	Counts
Active dependents	43	crates.io database dump	8 Nov 2026	Yes
New dependents (365 days)	20	crates.io database dump	8 Nov 2026	Yes
Peak active dependents	49	crates.io database dump	8 Nov 2026	Yes
Active dependents as a share of the peak	0.9153	crates.io database dump	8 Nov 2026	Yes
Binary downloads per release	Not measured			Yes

MaintenanceLatest human commit: 10 months ago3 not measured

Maintenance measurements
Signal	Value	Source	Fetched	Counts
Latest human commit	2025-12-28	GitHub repository	9 Nov 2026	Yes
Latest release	2025-12-28	crates.io database dump	8 Nov 2026	Yes
First release	2018-11-21	crates.io database dump	8 Nov 2026	Yes
Latest version	0.7.0	crates.io database dump	8 Nov 2026	Yes
Days the oldest outside issue waits for a reply	2408	GitHub repository	9 Nov 2026	Yes
Maintainer replies over 365 days	0	GitHub repository	9 Nov 2026	Yes
Repository archived	false	GitHub repository	9 Nov 2026	Yes
Repository gone	false	GitHub repository	9 Nov 2026	Yes
Release commit or manifest in the repo	true	crates.io package	6 Nov 2026	Yes
Published docs	true	crates.io database dump	8 Nov 2026	Yes
Latest release fails cargo check	Not measured			Yes
Build check date	Not measured			Yes
Build check toolchain	Not measured			Yes

SecurityUnpatched vulnerabilities: none

Security measurements
Signal	Value	Source	Fetched	Counts
Unpatched vulnerabilities past the grace window	none	RustSec advisory database	8 Nov 2026	Yes
RustSec unmaintained advisory	none	RustSec advisory database	8 Nov 2026	Yes
Deprecation notice	none	crates.io database dump	8 Nov 2026	Yes
Deprecated requirement	none	crates.io database dump	8 Nov 2026	Yes

Distribution8 releases, 592,313 downloads over 30 days5 not measured

Distribution measurements
Signal	Value	Source	Fetched	Counts
Releases	8	crates.io database dump	8 Nov 2026	Yes
Downloads over 30 days	592313	crates.io database dump	8 Nov 2026	Yes
Binary downloads over the last 3 releases	Not measured			Yes
Homebrew installs on request over 365 days	Not measured			Yes
Repology repository families	Not measured			Yes
Docker pull growth over 90 days	Not measured			Yes
Docker pulls at the growth baseline	Not measured			Yes
Every version a prerelease	false	crates.io database dump	8 Nov 2026	Yes
Every version 0.0.x	false	crates.io database dump	8 Nov 2026	Yes
Every version yanked	false	crates.io database dump	8 Nov 2026	Yes
Crate deleted from crates.io	false	crates.io database dump	8 Nov 2026	Yes

Repository239 stars, 35 forks, 14 contributors, 138 commits. Stars alone never qualify a project.

Repository measurements
Signal	Value	Source	Fetched	Counts
GitHub stars	239	GitHub repository	9 Nov 2026	Yes — one part of the repository route
GitHub forks	35	GitHub repository	9 Nov 2026	Yes — one part of the repository route
Contributors with a GitHub account	14	GitHub contributors	6 Nov 2026	Yes — one part of the repository route
Commits on the default branch	138	GitHub repository	9 Nov 2026	No
Repository's main crate left out of the entry	none	crates.io database dump	8 Nov 2026	Yes

Facts that never count

Facts that never count measurements
Signal	Value	Source	Fetched	Counts
License	Apache-2.0 OR MIT	crates.io database dump	8 Nov 2026	No
Runs on, from listed crates and their direct dependencies	GPU support unknown	crates.io database dump	8 Nov 2026	No
What shows each backend	no dependency or feature matches a backend row	crates.io database dump	8 Nov 2026	No
Native code, from listed crates and their dependencies	No native code found	crates.io database dump	8 Nov 2026	No
Python bindings, from direct dependencies of listed crates	No Python binding crate found	crates.io database dump	8 Nov 2026	No
Crates that depend on a listed crate directly	115	crates.io database dump	8 Nov 2026	No

Corrections and review history

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Judgments

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