last_months_hits.rb

require 'rubygems'
require 'garb'        # http://github.com/vigetlabs/garb/
require 'sparklines'  # http://github.com/topfunky/sparklines

Garb::Session.login('analytics@email.com', 'password')
 
site = Garb::Profile.all.first

days = []
length = 86400

puts "Generating graph of hits on #{site.title} homepage over last month"

30.times do |day|
  r = Garb::Report.new(site)
  
  r.metrics << :pageviews
  r.dimensions << :request_uri
  r.filters << {:request_uri.eql => '/'}
  r.start_date = Time.now - (length*day)
  r.end_date = Time.now - (length*(day-1))
    
  days << r.all.first.pageviews.to_i
end

graph = Sparklines.plot(days, :type => 'smooth', :height => 20, :step => 1, :line_color => '#0080FF')

graph_file = File.new("graph.jpg", "w")
graph_file.write(graph)
graph_file.close