[R] After sorting a dataframe by date

[martiny]

HI,
I have created a dataframe "df" and try to sort it by its date using the
order() as below:

df<-read.csv(constr,header=T)
  sorted.df<-df[order(as.Date(df$Date), decreasing = F),] 
  print(sorted.df)

The dataframe was sorted, but the output from the command console shows
reserved line order..rather than starting at "1"....it does not really
affect my result, but I want to understand why is that...

          Date   Open   High    Low  Close   Volume Adj.Close
252 2011-01-03 325.64 330.26 324.84 329.57 15897800    328.16
251 2011-01-04 332.44 332.50 328.15 331.29 11038600    329.87
250 2011-01-05 329.55 334.34 329.50 334.00  9125700    332.57
249 2011-01-06 334.72 335.25 332.90 333.73 10729600    332.30
248 2011-01-07 333.99 336.35 331.90 336.12 11140400    334.68
247 2011-01-10 338.83 343.23 337.17 342.45 16020000    340.99
246 2011-01-11 344.88 344.96 339.47 341.64 15861000    340.18
245 2011-01-12 343.25 344.43 342.00 344.42 10806800    342.95
244 2011-01-13 345.16 346.64 343.85 345.68 10599300    344.20
...
...
3   2011-12-28 406.89 408.25 401.34 402.64  8166500    400.92
2   2011-12-29 403.40 405.65 400.51 405.12  7713500    403.39
1   2011-12-30 403.51 406.28 403.49 405.00  6416500    403.27

Any advice would be highly appreciated.



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