From: Jeroen van Doorn <jeroen.vandoorn@...>
Date: 2006-04-10T17:13:43+09:00
Subject: Re: Newbie: dates by week and year

Thanks for the answer!

This one really gave me a headache ...

Kind regards,
Jeroen van Doorn

ara.t.howard@noaa.gov wrote:
> On Fri, 7 Apr 2006, Jeroen van Doorn wrote:
>
>> Hi Everybody,
>>
>> Am a newbie to ruby, so forgive me if this is a stupid question,
>>
>> I'm looking for a way to get  a series of dates (monday - sunday or 
>> sunday - saturday) , but I'm only having
>> the year and the week number...
>>
>> Hopefully someone can help,
>> Kind regards,
>> Jeroen van Doorn
>
> this ought to get you going:
>
>     harp:~ > cat a.rb
>     require 'date'
>
>     def weekno year, week
>       jjj = (7 * (week - 1)) + 1
>       jd = Date.ordinal_to_jd year, jjj
>       yyyy, m, d = Date.jd_to_civil jd
>       a = Date.new yyyy, m, d
>       b = Date.new yyyy, m, d + 7
>       (a ... b)
>     end
>
>     first = weekno 2006, 1
>     p first.map{|day| day.to_s}
>
>     second = weekno 2006, 2
>     p second.map{|day| day.to_s}
>
>     third = weekno 2006, 3
>     p third.map{|day| day.to_s}
>
>
>
>     harp:~ > ruby a.rb
>     ["2006-01-01", "2006-01-02", "2006-01-03", "2006-01-04", 
> "2006-01-05", "2006-01-06", "2006-01-07"]
>     ["2006-01-08", "2006-01-09", "2006-01-10", "2006-01-11", 
> "2006-01-12", "2006-01-13", "2006-01-14"]
>     ["2006-01-15", "2006-01-16", "2006-01-17", "2006-01-18", 
> "2006-01-19", "2006-01-20", "2006-01-21"]
>
>
> regards.
>
> -a