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Re: [O] Computations on properties
From: |
Eric Abrahamsen |
Subject: |
Re: [O] Computations on properties |
Date: |
Wed, 09 Oct 2013 17:29:03 +0200 |
User-agent: |
Gnus/5.130008 (Ma Gnus v0.8) Emacs/24.3 (gnu/linux) |
Thierry Pellé <address@hidden> writes:
> Hi,
> I'm seeking how to do something like that
>
> Let the following text inserted in an org-mode file
>
> * Mean Calculation
> :PROPERTIES:
> :VAL1: 5
> :VAL2: 10
> :COEF: 10
> :END:
>
> I would like to append the result of a computation
> like RES=(VAL1*COEF+VAL2)/(COEF+1)
>
> Something like
> * Mean Calculation
> ...
> :END:
>
> Mean Calculation=RES (where RES is the value of the result)
>
> I think to do this with a python script but is there a more org-mode/emacs
> method to do it?
Sometimes I think it would be nice to have a way to draw property values
directly into a babel block, the way you can with table data. Sort of
like:
* Heading
:PROPERTIES:
:ID: 3f78f08a-ccca-4fc0-aba9-2a192f7a0e5a
:foo: 5
:bar: puppy
:END:
#+BEGIN_SRC emacs-lisp :var alist=3f78f08a-ccca-4fc0-aba9-2a192f7a0e5a
And in the block, the "alist" variable would look like '(:foo 5 :bar
"puppy").
What would be even better would be to run a tags search on matching
headlines and feed all property drawers into a single block, as a list
of alists. Just thinking out loud...
E