[R] calendar-based time-series in R

[Satoshi Takahama]

Hello,

I am trying to switch to R from S-PLUS 6.1, and one problem I am having is 
using R for manipulation of calendar-based time-series. In S-PLUS, I 
commonly use the functions timeSequence(), timeDate(), and timeSeries() to 
align/average/aggregate data; and I also do a lot of plotting of 
time-series data (with calendar-based labels on the x-axis).

I was wondering if anyone is familiar with the S-PLUS functions and ways 
to perform the same tasks I mentioned above in R. From what I can gather 
in the documentation and previous help messages , the 'its' package can 
provide the same functionalities, but I am not clear on the functions and 
structure of the data that would correspond to those in S-PLUS. If I am 
incorrect in my assessment of the 'its' library, I would appreciate any 
advice on effective ways in which calendar-based time-series can be 
treated in R.

Thank you very much,
Satoshi
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Satoshi Takahama
Carnegie Mellon University
Dept. of Chemical Engineering
Pittsburgh, PA 15213