daru

https://github.com/sciruby/daru

Ruby

Data Analysis in RUby

Daru::DataFrame#compute

Returns a vector, based on a string with a calculation based
on vector.

The calculation will be eval'ed, so you can put any variable
or expression valid on ruby.

For example:
  a = Daru::Vector.new [1,2]
  b = Daru::Vector.new [3,4]
  ds = Daru::DataFrame.new({:a => a,:b => b})
  ds.compute("a+b")
  => Vector [4,6]

Source | Google | Stack overflow

Edit

git clone [email protected]:sciruby/daru.git
cd daru
open lib/daru/dataframe.rb

Contribute

# Make a new branch

git checkout -b -your-name--update-docs-Daru--DataFrame-compute-for-pr

# Commit to git

git add lib/daru/dataframe.rbgit commit -m "better docs for Daru::DataFrame#compute"

# Open pull request

gem install hub # on a mac you can `brew install hub`

hub fork

git push <your name> -your-name--update-docs-Daru--DataFrame-compute-for-pr

hub pull-request

# Celebrate!