Skip to content
Simple time series data generation
Find file
Fetching latest commit…
Cannot retrieve the latest commit at this time.
Failed to load latest commit information.


Gem Version Build Status

A simple tool for statefully generating time-series data. Requires Ruby 1.9 or greater.


In your shell:

gem install quixote

Then, in your application or script:

require 'quixote'

Basic Usage

For each data stream you want to generate, set up a Quixote object. Here are some examples:

percentage = 0, max: 100, range_by: 10)
fahrenheit = -30.0, max: 120.0, range_by: 3.0)

If you don't specify any initialization options the object will be assumed to be a percentage and will default to the settings of the percentage object above.

An initial value will be randomly generated and can be accessed with #last:

percentage.last #=> 58

If you want to enforce a certain starting value, you can provide that as well:

percentage = 15, min: 0, max: 100, range_by: 10)

By default each following value will range up or down by a random value up to a max of range_by. To get a series of stateful values just call #next: #=> 64 #=> 66 #=> 58

This makes it trivial to generate stateful runs of any length you want:

values = []
100.times { values << }

values #=> [49, 55, 48, …]

You can use #last to retrieve the most recently generated number or move the range to a number you select at any time.

Custom Progressions

If you want more complex progression behavior you can provide your own lambda:

by_two = ->(last) { last + 2 }
incrementor = 0, progress: by_two)

incrementor.last #=> 0 #=> 2 #=> 4


  • Check the latest master to make sure the feature hasn't been implemented / the bug hasn't been fixed yet.
  • Check the issue tracker to see if someone has already requested and/or contributed it.
  • Fork the project and submit a pull request from a feature or bugfix branch.
  • Please include tests. This is important so we don't break your changes unintentionally in a future version.
  • Please don't modify the gemspec, Rakefile, version, or changelog. If you do change these files, please isolate a separate commit so we can cherry-pick around it.


Copyright (c) 2012-2014 Matt Sanders. See LICENSE for details.

Something went wrong with that request. Please try again.