This library enables to directry call pandas from Ruby language. This uses pycall.

Add this line to your application's Gemfile:

gem 'pandas'

And then execute:

$ bundle

Or install it yourself as:

$ gem install pandas

Example usage:

require 'pandas'
df = Pandas.read_csv('data/titanic.csv')

puts df.groupby(:Sex)[:Survived].describe
#         count      mean       std  min  25%  50%  75%  max
# Sex
# female  314.0  0.742038  0.438211  0.0  0.0  1.0  1.0  1.0
# male    573.0  0.190227  0.392823  0.0  0.0  0.0  0.0  1.0

puts df.groupby(:Sex)[:Age].describe
#         count       mean        std   min   25%   50%   75%   max
# Sex
# female  314.0  27.719745  13.834740  0.75  18.0  27.0  36.0  63.0
# male    573.0  30.431361  14.197273  0.42  21.0  28.0  38.0  80.0

After checking out the repo, run bin/setup to install dependencies. Then, run rake spec to run the tests. You can also run bin/console for an interactive prompt that will allow you to experiment.

To install this gem onto your local machine, run bundle exec rake install. To release a new version, update the version number in version.rb, and then run bundle exec rake release, which will create a git tag for the version, push git commits and tags, and push the .gem file to rubygems.org.

Bug reports and pull requests are welcome on GitHub at https://github.com/mrkn/pandas.rb.

The gem is available as open source under the terms of the MIT License.