title: Numeric Dates to String date
body: <p>I am loading time series date into R as a data frame. However, the time series dates aren't being displayed as string when I view the data, though the class of the date column is recognized as a date class. Without using zoo, how can I get the dataset to display the dates in string format. This is really for visual purposes to be able to see if the data is correct.</p>
  
  <pre><code>Date        Open    High    Low Close   Volume  Adj Close
  3/8/2013    834.5   834.92  825.05  831.52  2911900 831.52
  3/7/2013    834.06  836.62  829.58  832.6   2052700 832.6
  3/6/2013    841.03  844 828.81  831.38  2873000 831.38
  3/5/2013    828.93  840.15  828.9   838.6   4044100 838.6
  3/4/2013    805.3   822.84  805 821.5   2775600 821.5
  </code></pre>
  
  <p>is displayed in R as:</p>
  
  <pre><code>Date    Open    High    Low Close   Volume  Adj.Close
  15772   834.50  834.92  825.05  831.52  2911900 831.52
  15771   834.06  836.62  829.58  832.60  2052700 832.60
  15770   841.03  844.00  828.81  831.38  2873000 831.38
  15769   828.93  840.15  828.90  838.60  4044100 838.60
  15768   805.30  822.84  805.00  821.50  2775600 821.50
  15765   797.80  807.14  796.15  806.19  2175400 806.19
  </code></pre>
  
  <p>I am using the command</p>
  
  <pre><code>data=read.csv("file location",header=T,colClasses=c("Date","numeric","numeric","numeric","numeric","numeric","numeric"))
  </code></pre>
  
  <p>Here is the dput output:</p>
  
  <pre><code>dput(head(data))
  structure(list(Date = structure(c(15772, 15771, 15770, 15769, 
  15768, 15765), class = "Date"), Open = c(834.5, 834.06, 841.03, 
  828.93, 805.3, 797.8), High = c(834.92, 836.62, 844, 840.15, 
  822.84, 807.14), Low = c(825.05, 829.58, 828.81, 828.9, 805, 
  796.15), Close = c(831.52, 832.6, 831.38, 838.6, 821.5, 806.19
  ), Volume = c(2911900, 2052700, 2873000, 4044100, 2775600, 2175400
  ), Adj.Close = c(831.52, 832.6, 831.38, 838.6, 821.5, 806.19)), .Names = c("Date", 
  "Open", "High", "Low", "Close", "Volume", "Adj.Close"), row.names = c(NA, 
  6L), class = "data.frame")
  </code></pre>