[R] How to format data for time-series analysis

Gabor Grothendieck ggrothendieck at gmail.com
Tue Oct 23 01:01:56 CEST 2007

R News 4/1 which gives an overview of the date time classes.

On 10/22/07, B. Bogart <bbogart at sfu.ca> wrote:
> Hello all,
> I'm using R to visualize and explore the data produced by a software
> system. The software generates logs for many types of events. The
> software runs for days on end, and can possibly generate multiple events
> per second.
> What is the appropriate time format for year, month, day, hour, minute,
> second, millisecond? that R can properly interpret (using zoo? or ITS?)
> I'll have to change the software to generate the time tags in the
> appropriate format. Hopefully the format will not have any spaces so I
> can use "cut" to separate fields.
> Is it best practice to put each different type of event in a different
> field? What is the best data structure to hold this? I've only used
> "tseries" data without time-tags thus far, and am new to R and don't
> totally understand the type of data structures possible in R (if anyone
> can suggest a good tutorial for that please let me know).
> Thanks all,
> B. Bogart
> Simon Fraser Unversity
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