#linear #piecewise #function #domain #points #continuous

piecewise-linear

A library for manipulating piecewise linear functions

2 unstable releases

0.2.0 Sep 19, 2023
0.1.0 Aug 18, 2019

#1136 in Math

Apache-2.0

35KB
616 lines

Build Status Apache 2 licensed piecewise-linear on Crates.io

piecewise-linear

Documentation, view on GitHub.

This crate is beta quality, please report any issues you encounter.

Piecewise linear function manipulation utilities

This crate provides utilities to manipulate continuous piecewise linear functions. These are functions whose graph is made up of straight-line sections:

A piecewise linear function

It uses geo for geometric primitives and types.

Usage example

let f = PiecewiseLinearFunction::try_from(vec![(0., 0.), (1., 1.), (2., 1.5)]).unwrap();
assert_eq!(f.y_at_x(1.25), Some(1.125));

Features

  • Efficient iterator over inflection points of n functions
  • Shrink and expand function domain
  • Sum
  • Max
  • Numerical integration
  • Negation

Various convenience features are also implemented. See the documentation for more details. Pull requests for other features are very welcome!

Other things to be done

  • Improve CI with clippy and fmt
  • Benchmarks
  • Add links in rustdoc
  • More tests

Contributing

Feel free to open issues and pull requests! Documentation improvements are appreciated. Please fully document new public features and provide a unit testing suite for any new code.

License

Licensed under the Apache-2.0 license. See the LICENSE file for details.

Contribution

Unless you explicitly state otherwise, any contribution intentionally submitted for inclusion in the work by you, as defined in the Apache-2.0 license, shall be licensed as above, without any additional terms or conditions.

Dependencies

~5MB
~83K SLoC