Pulling data from yahoofinance to use for examples

Author: chrislo

stock_data.rb

@@ -0,0 +1,28 @@
+require 'rubygems'
+require 'yahoofinance'
+require 'time'
+
+class StockData
+  def self.for(symbol, days)
+    data = YahooFinance::get_historical_quotes_days(symbol, days)
+    return_data = []
+    data.each {|d| return_data << [d[0], d[4].to_f]}
+    return_data
+  end
+  
+  def self.csv_for(symbol, days)
+    data = self.for(symbol, days)
+    csv = ""
+    data.each do |d|
+      date = Time.parse(d[0]).strftime('%Y-%m-%d %H:%M:%S')
+      close = d[1]
+  
+      csv << "#{date},#{close}\n"
+    end
+    csv
+  end
+end
+
+# puts StockData.for('RBS.L', 365)
+
+