hello, extracting data sets from the yahooSeries function, see below.  I 
return a data frame successfully, however how do i access the date 
field.  When viewing the structure i don't see the field, but using head 
i do see the date field. 

Can someone provide me some example plot code to plot the data in a time 
series format, with the dates going across the X axis labels? 
-zubin



zdata <-     yahooSeries(symbols = c("^NDX","UYG"), from = '2006-01-01', 
to = '2008-07-06', quote = c("Open", "High", "Low", "Close",         
     "Volume"), aggregation = c("d"), returnClass = c("data.frame"))

str(zdata)
'data.frame':    653 obs. of  10 variables:
 $ X.NDX.Open  : num  1654 1684 1698 1718 1734 ...
 $ X.NDX.High  : num  1687 1697 1708 1736 1745 ...
 $ X.NDX.Low   : num  1634 1682 1697 1711 1730 ...
 $ X.NDX.Close : num  1680 1696 1705 1735 1742 ...
 $ X.NDX.Volume: num  2.00e+09 1.88e+09 1.89e+09 2.23e+09 1.95e+09 ...
 $ UYG.Open    : num  NA NA NA NA NA NA NA NA NA NA ...
 $ UYG.High    : num  NA NA NA NA NA NA NA NA NA NA ...
 $ UYG.Low     : num  NA NA NA NA NA NA NA NA NA NA ...
 $ UYG.Close   : num  NA NA NA NA NA NA NA NA NA NA ...
 $ UYG.Volume  : num  NA NA NA NA NA NA NA NA NA NA ...

head(zdata)
           X.NDX.Open X.NDX.High X.NDX.Low
2006-01-03    1654.39    1686.59   1633.62
2006-01-04    1684.05    1696.83   1681.85
2006-01-05    1697.80    1707.71   1697.33
2006-01-06    1718.17    1735.50   1710.86
2006-01-09    1734.50    1745.12   1729.60
2006-01-10    1732.25    1744.47   1730.25

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