* How to compute the number of headlines under the given headline?
@ 2015-01-31 12:47 Marcin Borkowski
2015-01-31 14:37 ` John Kitchin
0 siblings, 1 reply; 4+ messages in thread
From: Marcin Borkowski @ 2015-01-31 12:47 UTC (permalink / raw)
To: Org-Mode mailing list
Hello,
I'd like to count the number of children (alternatively, number of all
descendants) of an Org headline. Is there a ready-made function for
that? If not, would using org-forward-heading-same-level and similar
functions in Lisp code be a good idea?
TIA,
--
Marcin Borkowski
http://octd.wmi.amu.edu.pl/en/Marcin_Borkowski
Faculty of Mathematics and Computer Science
Adam Mickiewicz University
^ permalink raw reply [flat|nested] 4+ messages in thread
* Re: How to compute the number of headlines under the given headline?
2015-01-31 12:47 How to compute the number of headlines under the given headline? Marcin Borkowski
@ 2015-01-31 14:37 ` John Kitchin
2015-01-31 17:47 ` Nicolas Goaziou
0 siblings, 1 reply; 4+ messages in thread
From: John Kitchin @ 2015-01-31 14:37 UTC (permalink / raw)
To: Marcin Borkowski; +Cc: Org-Mode mailing list
What about:
* Count headlines in current level
#+BEGIN_SRC emacs-lisp
(save-restriction
(org-narrow-to-subtree)
(1- (length
(org-element-map
(org-element-parse-buffer)
'headline
(lambda (x) 1)))))
#+END_SRC
#+RESULTS:
: 5
** one
** two
*** three
**** four
** five
This counts the headline you are in, so I subtract one from the total
count.
Marcin Borkowski writes:
> Hello,
>
> I'd like to count the number of children (alternatively, number of all
> descendants) of an Org headline. Is there a ready-made function for
> that? If not, would using org-forward-heading-same-level and similar
> functions in Lisp code be a good idea?
>
> TIA,
--
Professor John Kitchin
Doherty Hall A207F
Department of Chemical Engineering
Carnegie Mellon University
Pittsburgh, PA 15213
412-268-7803
@johnkitchin
http://kitchingroup.cheme.cmu.edu
^ permalink raw reply [flat|nested] 4+ messages in thread
* Re: How to compute the number of headlines under the given headline?
2015-01-31 14:37 ` John Kitchin
@ 2015-01-31 17:47 ` Nicolas Goaziou
2015-02-01 20:44 ` John Kitchin
0 siblings, 1 reply; 4+ messages in thread
From: Nicolas Goaziou @ 2015-01-31 17:47 UTC (permalink / raw)
To: John Kitchin; +Cc: Org-Mode mailing list, Marcin Borkowski
Hello,
John Kitchin <jkitchin@andrew.cmu.edu> writes:
> What about:
>
> * Count headlines in current level
>
>
> #+BEGIN_SRC emacs-lisp
> (save-restriction
> (org-narrow-to-subtree)
> (1- (length
> (org-element-map
> (org-element-parse-buffer)
> 'headline
> (lambda (x) 1)))))
> #+END_SRC
>
> #+RESULTS:
> : 5
>
> ** one
> ** two
> *** three
> **** four
> ** five
>
>
> This counts the headline you are in, so I subtract one from the total
> count.
Note that, in this case,
(org-element-parse-buffer 'headline)
is much more efficient.
Regards,
--
Nicolas Goaziou
^ permalink raw reply [flat|nested] 4+ messages in thread
* Re: How to compute the number of headlines under the given headline?
2015-01-31 17:47 ` Nicolas Goaziou
@ 2015-02-01 20:44 ` John Kitchin
0 siblings, 0 replies; 4+ messages in thread
From: John Kitchin @ 2015-02-01 20:44 UTC (permalink / raw)
To: John Kitchin, Marcin Borkowski, Org-Mode mailing list
[-- Attachment #1: Type: text/plain, Size: 1010 bytes --]
Nice and compact!
John
-----------------------------------
Professor John Kitchin
Doherty Hall A207F
Department of Chemical Engineering
Carnegie Mellon University
Pittsburgh, PA 15213
412-268-7803
@johnkitchin
http://kitchingroup.cheme.cmu.edu
On Sat, Jan 31, 2015 at 12:47 PM, Nicolas Goaziou <mail@nicolasgoaziou.fr>
wrote:
> Hello,
>
> John Kitchin <jkitchin@andrew.cmu.edu> writes:
>
> > What about:
> >
> > * Count headlines in current level
> >
> >
> > #+BEGIN_SRC emacs-lisp
> > (save-restriction
> > (org-narrow-to-subtree)
> > (1- (length
> > (org-element-map
> > (org-element-parse-buffer)
> > 'headline
> > (lambda (x) 1)))))
> > #+END_SRC
> >
> > #+RESULTS:
> > : 5
> >
> > ** one
> > ** two
> > *** three
> > **** four
> > ** five
> >
> >
> > This counts the headline you are in, so I subtract one from the total
> > count.
>
> Note that, in this case,
>
> (org-element-parse-buffer 'headline)
>
> is much more efficient.
>
>
> Regards,
>
> --
> Nicolas Goaziou
>
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^ permalink raw reply [flat|nested] 4+ messages in thread
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2015-01-31 12:47 How to compute the number of headlines under the given headline? Marcin Borkowski
2015-01-31 14:37 ` John Kitchin
2015-01-31 17:47 ` Nicolas Goaziou
2015-02-01 20:44 ` John Kitchin
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