R help - Mar 2008 - Addition of numeric data to dates

Hello!

I currently have a table of data with a column of start dates and a column
with some numbers representing years. I need to add these numbers to the
dates to get an end date. The two types of data are obviously incompatible
and adddition of the two will not work. Does anyone know how I might go
about this?? %-|
-- 
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If I understand:

as.Date("2008-03-14") + 5*365

On 14/03/2008, Jillywadd <jill.waddingham07 at imperial.ac.uk>
wrote:
>
>  Hello!
>
>  I currently have a table of data with a column of start dates and a column
>  with some numbers representing years. I need to add these numbers to the
>  dates to get an end date. The two types of data are obviously incompatible
>  and adddition of the two will not work. Does anyone know how I might go
>  about this?? %-|
>  --
>  View this message in context:
http://www.nabble.com/Addition-of-numeric-data-to-dates-tp16054166p16054166.html
>  Sent from the R help mailing list archive at Nabble.com.
>
>  ______________________________________________
>  R-help at r-project.org mailing list
>  https://stat.ethz.ch/mailman/listinfo/r-help
>  PLEASE do read the posting guide
http://www.R-project.org/posting-guide.html
>  and provide commented, minimal, self-contained, reproducible code.
>

-- 
Henrique Dallazuanna
Curitiba-Paran?-Brasil
25? 25' 40" S 49? 16' 22" O

On Fri, 14 Mar 2008, Henrique Dallazuanna wrote:
> If I understand:
>
> as.Date("2008-03-14") + 5*365
What about leap years?  That is 2013-03-13.
> x <- as.Date("2008-03-14")
> xx <- as.POSIXlt(x)
> xx$year <- xx$year+5
> as.Date(xx)
[1] "2013-03-14"

is I think what is being asked for.
> On 14/03/2008, Jillywadd <jill.waddingham07 at imperial.ac.uk> wrote:
>>
>>  I currently have a table of data with a column of start dates and a
column
>>  with some numbers representing years. I need to add these numbers to
the
>>  dates to get an end date. The two types of data are obviously
incompatible
>>  and adddition of the two will not work. Does anyone know how I might
go
>>  about this?? %-|
-- 
Brian D. Ripley,                  ripley at stats.ox.ac.uk
Professor of Applied Statistics,  http://www.stats.ox.ac.uk/~ripley/
University of Oxford,             Tel:  +44 1865 272861 (self)
1 South Parks Road,                     +44 1865 272866 (PA)
Oxford OX1 3TG, UK                Fax:  +44 1865 272595