[R] No years() function?

[José Rafael Ferrer Paris]

>From the help of weekdays:

"Note:

     Other components such as the day of the month or the year are very
     easy to compute: just use 'as.POSIXlt' and extract the relevant
     component."

Yet another option:

help(package="chron")

JR

El mié, 07-03-2007 a las 15:35 +0000, Sérgio Nunes escribió:
> Hi,
> 
> I'm trying to aggregate date values using the aggregate function. For example:
> 
> aggregate(data,by=list(weekdays(LM),months(LM)),FUN=length)
> 
> I would also like to aggregate by year but there seems to be no
> years() function.
> Should there be one? Is there any alternative choice?
> 
> Also, a hours() function would be great. Any tip on this?
> 
> Thanks in advance!
> Sérgio Nunes
> 
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-- 
Dipl.-Biol. JR Ferrer Paris
~~~~~~~~~~~~~~~~~~~~~~~~~~~
Laboratorio de Biología de Organismos --- Centro de Ecología
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