https://github.com/swanandp/loess.rb

A Simple LOESS / LOWESS calculator that can be used from Ruby
https://github.com/swanandp/loess.rb

Last synced: 3 months ago
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A Simple LOESS / LOWESS calculator that can be used from Ruby

• Host: GitHub
• URL: https://github.com/swanandp/loess.rb
• Owner: swanandp
• License: mit
• Created: 2014-08-05T16:08:07.000Z (over 10 years ago)
• Default Branch: master
• Last Pushed: 2014-08-08T07:42:01.000Z (over 10 years ago)
• Last Synced: 2024-09-17T03:08:37.165Z (4 months ago)
• Language: Ruby
• Homepage:
• Size: 1.78 MB
• Stars: 4
• Watchers: 1
• Forks: 1
• Open Issues: 0
• Metadata Files:
  • Readme: README.md
  • License: LICENSE

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README

        
# Loess

Simple Loess / Lowess interpolator built in Ruby, using Apache's [`LoessInterpolator`][1] through Rjb

## Installation

Add this line to your application's Gemfile:

    gem 'loess'

And then execute:

    $ bundle install

Or install it yourself as:

    $ gem install loess

## Depencies

This gem depends on Rjb, which in turn depends on Java. [Rjb documentation][3] has more info.

## Usage

```Ruby

data = 1000.times.map { |i| [i, rand(10_000)] }

regression = Loess::Interpolator.interpolate(data)

regression = Loess::Interpolator.new(data).interpolate

# Change your settings

interpolator = Loess::Interpolator.new(data)

interpolator.bandwidth = 0.2

interpolator.robustness_factor = 10 # Go crazy

interpolator.interpolate

# Pass in settings through initialize

interpolator = Loess::Interpolator.new(data, bandwidth: 0.2, accuracy: 1e-10)

interpolator.interpolate

# Get a Spline Interpolator object

# Returns an instance of PolynomialSplineFunction, smoothed with the given data

# More documentation at [Apache Commons Maths][2]

interpolator.spline_interpolator

```

## Contributing

At this moment, there is little to contribute, but still:  

1. Fork it ( https://github.com/swanandp/loess.rb/fork )

2. Create your feature branch (`git checkout -b my-new-feature`)

3. Commit your changes (`git commit -am 'Add some feature'`)

4. Push to the branch (`git push origin my-new-feature`)

5. Create a new Pull Request

[1]: http://commons.apache.org/proper/commons-math/jacoco/org.apache.commons.math3.analysis.interpolation/LoessInterpolator.java.html

[2]: http://commons.apache.org/proper/commons-math/jacoco/org.apache.commons.math3.analysis.polynomials/PolynomialSplineFunction.java.html

[3]: https://github.com/arton/rjb