help("%in%") may be of use. However I don't see any overlap in your example.
--- On Wed, 10/1/08, [Ricardo Rodriguez] Your XEN ICT Team <[EMAIL PROTECTED]>
wrote:
> From: [Ricardo Rodriguez] Your XEN ICT Team <[EMAIL PROTECTED]>
> Subject: [R] time segments intersection
> To: r-help@r-project.org
> Cc: "Antonio Martinez Cortizas" <[EMAIL PROTECTED]>
> Received: Wednesday, October 1, 2008, 12:48 PM
> Hi all,
>
> Please, how could I calculate the time that two time
> segments has in
> common? Is there any function to perform this calculation?
>
> For instance, given four POSIXlt objects...
>
> endPeriod<-as.POSIXlt("2008-09-30")
> startPeriod<-as.POSIXlt("2007-10-01")
> endProject<-as.POSIXlt("2007-05-31")
> startProject<-as.POSIXlt("2006-12-01")
>
> that limit two time segments...
>
> project <- as.numeric(endProject-startProject)
> period <- as.numeric(endPeriod-startPeriod)
>
> How could I calculate the time project and period overlap?
>
> Thanks for your help!
>
> Ricardo
>
>
>
> --
> Ricardo RodrÃguez
> Your XEN ICT Team
>
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