From mboxrd@z Thu Jan  1 00:00:00 1970
From: Matt Lundin <mdl@imapmail.org>
Subject: Re: How to change agenda sorting order temporarily?
Date: Mon, 30 May 2016 10:38:02 -0500
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To: Martin Beck <Elwood151@web.de>
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Matt Lundin <mdl@imapmail.org> writes:

> "Martin Beck" <Elwood151@web.de> writes:
>
>> I'm working with a lot of pre-defined agendas, but I sometimes would
>> like to change the sorting order of one of those to different criteria
>> (by time, alphanumerically, etc.).
>>  
>> I did not find a way to do that in org-mode directly - did I overlook
>> something, or do I really have to change the configuration of the
>> whole agenda and rebuild it?
>>  
>> Related problem:
>> If I change the configuration of the agenda by changing the
>> customizing options, those changes do only have an effect, if I kill
>> the agenda buffer and launch the agenda again.
>> It would be nice, if I just could rebuild the existing agenda with "r"
>> or "g", but that does not seem to be sufficient?
>>  
>
> Here's a quick function that works for me:
>
> (defun my-org-agenda-change-sorting-strategy (strategy)
>   "Change the sorting strategy."
>   (interactive (list
>                 (completing-read "Choose a strategy: "
>                                  (mapcar 'cdr (cdr org-sorting-choice))
>                                  nil t)))
>   ;; adjust the following types as needed - e.g., add 'agenda, etc.
>   (org-agenda-check-type t 'todo 'tags 'search)
>   (let ((org-agenda-sorting-strategy (list (intern strategy))))
>     (org-agenda-redo)))

I should add that with this function the new sort order is temporary.
Pressing "r" for refresh will restore the default sort order for the
buffer. 

Matt