[R] timeAlign

Omar Lakkis uofiowa at gmail.com
Mon Apr 10 23:06:45 CEST 2006

I use POSIXct for datetimes. Is thee a timeAlign function that I can
use where :

align by year
      direction -1 ==> start of this year
      direction 1  ==> start of next year
align by week
      direction -1 ==> date on last sunday
      direction 1  ==> date on next sunday
align by day
      direction -1 ==> time at past midnight
      direction 1  ==> time at this comming midnight

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