Re: Re: Organizing a students live

From: Daniel Martins <danielemc@gmail.com>
To: Carsten Dominik <carsten.dominik@gmail.com>
Cc: Matt Lundin <mdl@imapmail.org>, Emacs-orgmode@gnu.org
Subject: Re: Re: Organizing a students live
Date: Mon, 28 Dec 2009 19:09:27 -0200	[thread overview]
Message-ID: <6ac505ad0912281309v53e8a923v6490c2f780c73a64@mail.gmail.com> (raw)
In-Reply-To: <7261F3CD-8614-462A-A47E-5C2B16374A51@gmail.com>

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> Interesting.  But too complex for now - and I actually do prefer local
control.

I know it is complex.

I thought about the first steps

I was thinking about a variable (list?) with predefined holidays

or better omit-holidays

such as org-omit-holidays

we could add the omit dates in any place
  (add-to-list 'org-omit-holidays "25 Dec")
  (add-to-list 'org-omit-holidays "1 Jan")
  (add-to-list 'org-omit-holidays "1 May")
etc.

Then we could change (adapt) the

function calendar-check-holydays from holidays.el

I did a search-replace to something like this:

(defun org-check-calendar-omit-holidays (date)
  "Check the list of org-omit-holidays for any that occur on DATE.
The value returned is a list of strings of relevant org-omit-holiday
descriptions.
The org-omit-holidays are those in the list `org-omit-holidays'."
  (let ((displayed-month (extract-calendar-month date))
        (displayed-year (extract-calendar-year date))
        (org-omit-holiday-list))
    (dolist (h (calendar-org-omit-holiday-list))
      (if (calendar-date-equal date (car h))
          (setq org-omit-holiday-list (append org-omit-holiday-list (cdr
h)))))
    org-omit-holiday-list))

with these adaptation we could use a slighly changed  version of the
"diary-schedule" function  I sent before.

I did not go further nor tested it.

Thinking again now: I think it is better to avoid holidays than week
numbers. The problem is that we have to decide which holidays are "really"
holidays and not rely on the holidays variables that come with Emacs.

Daniel

2009/12/28 Carsten Dominik <carsten.dominik@gmail.com>

> Hi Daniel,
>
>
> On Dec 27, 2009, at 1:51 AM, Daniel Martins wrote:
>
>  I liked the idea of org-diary-class!
>>
>
> I have added the function now to org-agenda.el
>
>
>
>> About avoiding holidays and certain weeks:
>>
>> I used remind and wyrd for a while  and they are a quite good software
>> for dealing with such appts.
>>
>> There we have the OMIT function where we determine holidays and other
>> non-working days including Sat and Sundays
>>
>>
>> Normally we have an OMIT list at the beginning of file
>>
>> Some functions simply omit those dates
>>
>> Other expressions use another keyword AFTER (or BEFORE)  to change
>> OMIT behaviour
>>
>> like
>> 23 Mar AFTER OMIT "Bank payment"
>>
>> eg If 23 Mar is in Saturday it will appear in Monday
>>
>> This preamble is just to say 2 things:
>>
>> 1) remind/wyrd could be used as a benchmark for some of the calendar
>> isuues we have
>>
>> 2) I do not know if the week number in a year is a practical way of
>> setting exceptions to org-diary-class
>>
>> Daniel
>>
>> PS Wyrd page is
>>
>> http://pessimization.com/software/wyrd/
>>
>
> Interesting.  But too complex for now - and I actually do prefer local
> control.
>
> - Carsten
>
>
>
>
>>
>>
>>
>> 2009/12/26 Carsten Dominik <carsten.dominik@gmail.com>:
>>
>>> Hi Daniel,
>>>
>>> I think it is a good idea to add such a function to org-mode.  But I
>>> am not sure if skipping holidays is the best, because Universities
>>> also have lecture-free weeks etc.
>>>
>>> So I am more thinking about a function like this (untested)
>>>
>>> (defun org-diary-class (m1 d1 y1 m2 d2 y2 dayname &rest skip-weeks)
>>>  "Entry applies if date is between dates on DAYNAME, but skips
>>> SKIP-WEEKS.
>>> Order of the parameters is M1, D1, Y1, M2, D2, Y2 if
>>> `european-calendar-style' is nil, and D1, M1, Y1, D2, M2, Y2 if
>>> `european-calendar-style' is t.  The weeks are ISO week numbers where
>>> the item should not apply."
>>>  (let* ((date1 (calendar-absolute-from-gregorian
>>>                (if european-calendar-style
>>>                    (list d1 m1 y1)
>>>                  (list m1 d1 y1))))
>>>        (date2 (calendar-absolute-from-gregorian
>>>                (if european-calendar-style
>>>                    (list d2 m2 y2)
>>>                  (list m2 d2 y2))))
>>>        (d (calendar-absolute-from-gregorian date)))
>>>   (and
>>>    (<= date1 d)
>>>    (<= d date2)
>>>    (= (calendar-day-of-week date) dayname)
>>>    (or (not skip-weeks)
>>>        (progn
>>>          (require 'cal-iso)
>>>          (not (member (car (calendar-iso-from-absolute d)) skip-weeks))))
>>>    entry)))
>>>
>>>
>>> What do you think?
>>>
>>> - Carsten
>>>
>>> On Dec 21, 2009, at 4:54 PM, Daniel Martins wrote:
>>>
>>>  In fact, it helps! Thanks
>>>>
>>>> However a sentence like this:
>>>>
>>>>
>>>> +# a class that meets every Monday evening between February 16 and
>>>> April 20, 2009
>>>> ** Class 7:00pm-9:00pm
>>>> <%%(and (= 1 (calendar-day-of-week date)) (diary-block 2 16 2009 4 20
>>>> 2009))>
>>>>
>>>> is not an example of simplicity and visibility for a quite common
>>>> feature!
>>>>
>>>> Maybe as a suggestion we could encapsulate such a huge expression in a
>>>> simpler org-mode function ?
>>>>
>>>> Daniel
>>>>
>>>>
>>>> PS In
>>>>
>>>> http://www.emacswiki.org/cgi-bin/wiki/DiaryMode#toc12
>>>>
>>>> I found another suggestion which I do not know how to include in
>>>> org-mode
>>>>
>>>>
>>>> ------------------------------------
>>>> Schedule
>>>>
>>>> If you want to write a schedule for school or university, you need to
>>>> define a block (it’s derived from diary-block) between two dates and a
>>>> weekday. The following function also recognizes holidays and won’t
>>>> send you to school on those days… :)
>>>>
>>>>  (defun diary-schedule (m1 d1 y1 m2 d2 y2 dayname)
>>>>    "Entry applies if date is between dates on DAYNAME.
>>>>  Order of the parameters is M1, D1, Y1, M2, D2, Y2 if
>>>>  `european-calendar-style' is nil, and D1, M1, Y1, D2, M2, Y2 if
>>>>  `european-calendar-style' is t. Entry does not apply on a history."
>>>>    (let ((date1 (calendar-absolute-from-gregorian
>>>>                  (if european-calendar-style
>>>>                      (list d1 m1 y1)
>>>>                    (list m1 d1 y1))))
>>>>          (date2 (calendar-absolute-from-gregorian
>>>>                  (if european-calendar-style
>>>>                      (list d2 m2 y2)
>>>>                    (list m2 d2 y2))))
>>>>          (d (calendar-absolute-from-gregorian date)))
>>>>      (if (and
>>>>           (<= date1 d)
>>>>           (<= d date2)
>>>>           (= (calendar-day-of-week date) dayname)
>>>>           (not (check-calendar-holidays date))
>>>>           )
>>>>           entry)))
>>>>
>>>> Then: "&%%(diary-schedule 22 4 2003 1 8 2003 2) 18:00 History"
>>>>
>>>>
>>>> ------------------------------------
>>>>
>>>>
>>>>
>>>> 2009/12/20 Matt Lundin <mdl@imapmail.org>:
>>>>
>>>>>
>>>>> Daniel Martins <danielemc@gmail.com> writes:
>>>>>
>>>>>  All academics here present (including of course Carsten) suffer from
>>>>>> the same problem, I think
>>>>>>
>>>>>>
>>>>>> *** Math classes
>>>>>> <2009-12-10 Thu 11:00-14:00 +1w>
>>>>>>
>>>>>>
>>>>>> will repeat forever and ever...
>>>>>>
>>>>>> We need to create a schedule for a period.
>>>>>>
>>>>>> The package "remind" (and its simple interface "wyrd") do this job
>>>>>> wonderfully but I do not know how to deal with this problem in Org
>>>>>> mode
>>>>>>
>>>>>
>>>>> The following FAQ should help:
>>>>>
>>>>> http://orgmode.org/worg/org-faq.php#diary-sexp-in-org-files
>>>>>
>>>>> - Matt
>>>>>
>>>>>
>>>>
>>>
>>>
> - Carsten
>
>
>
>

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