[R] Extracting future and past workday dates

[David Winsemius]

On Aug 5, 2010, at 8:09 AM, Sergey Goriatchev wrote:

> Hi, Henrique
>
> Thank you for trying, but that is not what I want. You get WEEKdays, I
> need WORKdays, and preferably sorted in order from future to the past.

Perhaps you would be pleased to know that there is an is.holiday  
function in chron:

http://finzi.psych.upenn.edu/R/library/chron/html/is.holiday.html

-- 
David.

>
> Best,
> Sergey
>
> On Thu, Aug 5, 2010 at 14:06, Henrique Dallazuanna  
> <wwwhsd at gmail.com> wrote:
>> Try this:
>>
>> c(Sys.Date() + 0:3, Sys.Date() - 0:3)
>>
>> or
>>
>> 0:3 %*% matrix(c(1, -1), ncol = 2) + Sys.Date()
>>
>> On Thu, Aug 5, 2010 at 8:36 AM, Sergey Goriatchev  
>> <sergeyg at gmail.com> wrote:
>>>
>>> Hello everyone
>>>
>>> I need to extract a vector of (t-3) to (t+3) dates, only working  
>>> days.
>>> How can I do that?
>>>
>>> For today I need a vector:
>>> 10.08.210
>>> 09.08.2010
>>> 06.08.2010
>>> 05.08.2010
>>> 04.08.2010
>>> 03.08.2010
>>> 02.08.2010
>>>
>>> Regards,
>>> Sergey
>>>
>>> --
>>> Kniven skärpes bara mot stenen.
>>>
>>> ______________________________________________
>>> 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-Paraná-Brasil
>> 25° 25' 40" S 49° 16' 22" O
>>
>
>
>
> -- 
> Kniven skärpes bara mot stenen.
>
> ______________________________________________
> 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.

David Winsemius, MD
West Hartford, CT