This post originated from an RSS feed registered with Ruby Buzz by Premshree Pillai. Original Post: People in Bangalore like to eat out on Sundays Feed Title: Premshree's Personal Weblog Feed URL: http://premshree.livejournal.com/data/rss Feed Description: Premshree's Weblog Latest Ruby Buzz Posts Latest Ruby Buzz Posts by Premshree Pillai Latest Posts From Premshree's Personal Weblog

Interestingly, folks in Bombay seem to like eating out on Tuesdays:

Notes:

1. Most people seem to end up using the tag “hotel” when they really mean to use “restaurant”, so I’ve gone with the former.
2. I rely on Flickr photo data and my program. You don’t have to take the graphs seriously.

Here’s the script I wrote to draw that graph (requires flickr.rb and rgplot):

#!/usr/local/bin/ruby18

require "../flickr"
require "gnuplot"

API_KEY = '1f01852f7641ab8d12a2eccd1d7f0b19'
SECRET = '091a8141470efa6c'

flickrObj = Flickr::Flickr.new(API_KEY, SECRET)
photosObj = Flickr::Photos.new
days = Hash.new { |h,k| h[k] = 0 }
photosObj.search(["bangalore","hotel"], "all", 0, 1000).each { |ele|
	if /([0-9]+)\-([0-9]+)\-([0-9]+)/.match(photosObj.get_info(ele)["date_taken"])
		t = Time.mktime($1, $2, $3)
		days[t.strftime("%a")] += 1
	end
}
Gnuplot.open do |gp|
	Gnuplot::Plot.new(gp) do |plot|
		plot.title  "Photos taken in restaurants in Bangalore"
		plot.ylabel "No. of Photos"
		plot.xlabel "Days"
		i = 0 
		plot.xtics("("+days.keys.map{|ele| "'#{ele}' #{i;i+=1}"}.join(",")+")")
		plot.data << Gnuplot::DataSet.new([(1..7).to_a, days.values]) do |ds|
			ds.with = "linespoints"
			ds.notitle
		end
	end
end

Enjoy!