Loess
Simple Loess / Lowess interpolator built in Ruby, using Apache's LoessInterpolator 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 has more info.
Usage
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_interpolatorContributing
At this moment, there is little to contribute, but still:
- Fork it ( https://github.com/swanandp/loess.rb/fork )
- Create your feature branch (
git checkout -b my-new-feature) - Commit your changes (
git commit -am 'Add some feature') - Push to the branch (
git push origin my-new-feature) - Create a new Pull Request