[R] Extracting Current and Old Date

[John Kane]

If I read this correctly:

mydates <- as.Date(c("2007-06-22", "2007-05-21", "2004-04-13",
"2004-03-11","2004-02-13"))
xx  <-  min(mydates)
yy  <-  max(mydates)
yy-xx

John Kane
Kingston ON Canada


> -----Original Message-----
> From: pmaclean2011 at yahoo.com
> Sent: Sun, 28 Jul 2013 12:20:30 -0700 (PDT)
> To: r-help at r-project.org
> Subject: Re: [R] Extracting Current and Old Date
> 
> #This my look trivial but has been killing my time
> #I want to extract most current and old date from mydates #variable that
> has more than 10,000 observation.
> #Get days
> # use as.Date( ) to convert strings to dates
> mydates <- as.Date(c("2007-06-22", "2007-05-21", "2004-04-13",
> "2004-03-11","2004-02-13",))
> #Is there a way/fuction to extract mostcurrent date
> #from mydates variable
> mostcurrent <- as.Date(c("2007-06-22"))
> 
> #Is there a way/function to extract olddate
> #from mydates variable
> olddate    <- as.Date(c("2004-02-13"))
> 
> #Days between most current and old dayte
> days <- as.numeric(mostcurrent - olddate)
> 
> 
> Peter Maclean
> Department of Economics
> UDSM
> 	[[alternative HTML version deleted]]
> 
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