danielharan

class Jaccard
  def self.coefficient(a,b)
    result = (a & b).length / (a + b).uniq.length.to_f
    (result * 1000).round / 1000.0
  end
end

danielharan

# Example use:
# weigh_by_relative_importance(@report.items, :cell_value, [2,4,6,8,10]) do |item,weight|
#   xml.movie :lat => item.latitude, :long => item.longitude, :title => item.city,
#             :height => weight, :width => weight
# end
# Code inspired by http://www.juixe.com/techknow/index.php/2006/07/15/acts-as-taggable-tag-cloud/
# and meant to be usable for items on a map (as above) or tags
module MapHelper
  def weigh_by_relative_importance(items, method_name, classes)
    sorted = items.collect {|item| item.send(method_name)}.sort

danielharan

require 'rubygems'
require 'mechanize'

postal_codes = File.open("postal_codes.txt").read.split("\n")
# randomize to make the pattern slightly harder to see in logs
postal_codes = postal_codes.sort_by {|e| rand(10_000)}

def filename(postcode)
  postcode.sub(' ', '')
end

danielharan

class KeyValuePairs
  # Take a file like:
  # G6C=24034
  # H9E=24049
  # and create the hash you'd expect
  # if instead you have something like:
  # G6C=24034,24036
  # H9E=24049
  # then use a block to do the specify the value
  def self.hash(file_name, separator='=', &block)

danielharan

class String
  def starts_with?(str)
    self =~ /#{str}/
  end
end

names_to_edid = File.open(File.dirname(__FILE__) + '/edid_names').read.split("\n").
  collect {|line| edid, pruid, edname = line.split("|"); [edname.strip, edid.strip]}.
  inject({}) {|hash,e| hash[e.first] = e.last; hash }

danielharan

class Hash
  def +(other)
    (self.keys + other.keys).uniq.each do |key|
      if [self[key], other[key]].all?
        if self[key].is_a?(Hash)
          self[key] += other[key]
        elsif self[key].respond_to?(:+)
          self[key] += other[key]
        else
          raise "values for #{key} were neither hashes or summable"

danielharan

Dir.glob("*").each do |pc|
  File.open(pc).read =~ /aug08cpocRidingProfileTitle>([^<]*)</
  puts "#{pc},#{$1}"
end

danielharan

require 'rubygems'
require 'mechanize'

postal_codes = File.open("postal_codes.txt").read.split("\n")
# randomize to make the pattern slightly harder to see in logs
postal_codes = postal_codes.sort_by {|e| rand(10_000)}

def filename(postcode)
  postcode.sub(' ', '')
end

danielharan

require 'rubygems'
require 'mechanize'

postal_codes = File.open("postal_codes.txt").read.split("\n")
# randomize to make the pattern slightly harder to see in logs
postal_codes = postal_codes.sort_by {|e| rand(10_000)}

@agent = WWW::Mechanize.new do |a|
  a.user_agent_alias = 'Mac Safari'
  a.max_history = 1

danielharan

require 'rubygems'
require 'mechanize'

postal_codes = File.open("postal_codes.txt").read.split("\n")
# randomize to make the pattern slightly harder to see in logs
postal_codes = postal_codes.sort_by {|e| rand(10_000)}

@agent = WWW::Mechanize.new do |a|
  a.user_agent_alias = 'Mac Safari'
  a.max_history = 1