Functions related to survival analysis, such as Kaplan-Meier estimator of survival curves.
Add this line to your application's Gemfile:
gem 'survival'
And then execute:
$ bundle
Or install it yourself as:
$ gem install survival
To generate a Kaplan-Meier survival curve:
#survivals is an array of hashes. Each hash represents a sample, and must define
# :event (the event time)
# :censored (boolean describing whether this sample is right-censored)
survivals = [{:event => 21, :censored => false}, {:event => 13, :censored => true}, ... ]
survival_objs = SurvivalSample.create_survival_objects(survivals) #Create survival sample objects
points = KaplanMeier.generate_plot_points(survival_objs) #Generate the x,y coordinates of the survival curve
#points is an array of [x,y] pairs for plotting. Use your favorite plotting library to plot the line graph.
- Fork it
- 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 new Pull Request