require 'rubygems'
require 'gruff'

def read_csv(filename)
    ret = []
    File::open filename do |f|
       f.each_line{|line| ret << (line.split(',')[1].to_f / 1000000 ) }
       9.times{ ret.delete_at 0 }
    end
    ret
end

def labels
    ret = {}
    [1, 3, 5, 7, 9].each{|i| ret[i] = "#{(i+1).to_s}M"}
    ret
end

g                  = Gruff::Line.new
g.title            = 'Quicksort Paralelo en Erlang'
g.x_axis_label     = 'Nº Elementos (millones)'
g.y_axis_label     = 'Tiempo (segundos)'
g.minimum_value    = 0.0
g.maximum_value    = 55.0

g.data 'Qsort',          read_csv('Results qsort.csv')
g.data 'Qsort Paralelo', read_csv('Results p_qsort.csv')

g.labels = labels

g.write 'qsort_erlang.png'