require 'daru'

Daru.plotting_library = :gruff

dv = Daru::Vector.new [1, 2, 3]

dv.plot do |p|
  p.title = 'lol'
end

dv.plot type: :pie

dv.plot type: :line

dv.plot type: :scatter

dv = Daru::Vector.new [:a, :a, :a, :b, :b, :b, :c, :c], type: :category

dv.plot

dv.plot type: :bar, method: :fraction

dv.plot type: :pie do |p|
  p.title = 'category plot'
end