I am trying to create a data frame that includes data from 3 time series.
(^IRX, ^VIX, SPY).  I noticed that getSymbols() from yahoo (default) seems
to retrieve different rows for the 3 time series for the same time window I
specified.  So, I got an "arguments imply differing number of rows".  My
simple questions is how do I set # of rows for all 3 time series to be equal
and aligned by date correctly.


==============================================================
  arguments imply differing number of rows: 4279, 4277, 4258
In addition: Warning message:
In log(x) : NaNs produced
> print(NROW(IRX))
[1] 4258
> print(NROW(VIX))
[1] 4277
> print(NROW(SPY))
[1] 4279

-- 
Thank you,

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