Counting number of children under heading

Counting number of children under heading

[Marvin Doyley]

Hi there,

I would like to automatically count the number of children under a given heading. For example, I would like to have

* Cars (2)
** BMW
** Escort

 Putting  [/] at the end of header (in this case Cars), then putting the TODO keyword before each sub-header give me a partial solution

* Cars [/]
** TODO BMW
** TODO Escort


Is there way to do this without using the TODO keyword ?

Thanks,
M

Re: Counting number of children under heading

[Bastien]

Hi Marvin,

Marvin Doyley <marvinpas@gmail.com> writes:

> I would like to automatically count the number of children under a
> given heading. For example, I would like to have
>
> * Cars (2)
> ** BMW
> ** Escort

There is no such feature in Org, but I seem to remember someone
hack something similar -- maybe someone else with a better memory
can tell.

-- 
 Bastien

Re: Counting number of children under heading

[Thorsten Jolitz]

Bastien <bzg@gnu.org> writes:

> Hi Marvin,
>
> Marvin Doyley <marvinpas@gmail.com> writes:
>
>> I would like to automatically count the number of children under a
>> given heading. For example, I would like to have
>>
>> * Cars (2)
>> ** BMW
>> ** Escort
>
> There is no such feature in Org, but I seem to remember someone
> hack something similar -- maybe someone else with a better memory
> can tell.

Not the same thing (because its about "weight" (= number of hidden
lines) when folded, but somehow related:

Org Weights (by Francois Pinard):

,--------------------------------------
| https://github.com/pinard/org-weights
`--------------------------------------

Org Hidden Line Cookies (by me):

,--------------------------------
| https://github.com/tj64/org-hlc
`--------------------------------

-- 
cheers,
Thorsten

Re: Counting number of children under heading

[Eric Abrahamsen]

Marvin Doyley <marvinpas@gmail.com> writes:

> Hi there,
>
> I would like to automatically count the number of children under a given heading. For example, I would like to have
>
> * Cars (2)
> ** BMW
> ** Escort
>
>  Putting  [/] at the end of header (in this case Cars), then putting the TODO keyword before each sub-header give me a partial solution
>
> * Cars [/]
> ** TODO BMW
> ** TODO Escort
>
>
> Is there way to do this without using the TODO keyword ?
>
> Thanks,
> M

I could have sworn someone posted a thing for this just a week or two
ago, using `org-map-entries' and the identity function, and counting the
results. Anyway look at the docstring for `org-map-entries', it takes a
SCOPE argument you can set to 'tree to just map the headings under the
current one. A stupid example might look like:

(apply '+ (org-map-entries (lambda () 1) t 'tree))

Though that will count the top-level heading, as well.

E

Re: Counting number of children under heading

[Thorsten Jolitz]

Eric Abrahamsen <eric@ericabrahamsen.net> writes:

> I could have sworn someone posted a thing for this just a week or two
> ago, using `org-map-entries' and the identity function, and counting the
> results. 

Ups, that was me  ... forgot about it ;)

#+begin_quote
From: Martin Gross <m-gross@gmx.net>
Subject: Re: Get counting of items
Newsgroups: gmane.emacs.orgmode
To: "emacs-orgmode@gnu.org" <emacs-orgmode@gnu.org>
Date: Thu, 3 Apr 2014 10:39:18 +0200 (2 weeks, 3 hours, 19 minutes ago)

Dear Thorsten

> Here is a generalised form:
>
> #+begin_src emacs-lisp
>   (defun count-org-items (&optional level operator match scope skip)
>     "Print a counting of outline items."
>     (interactive)
>     (let ((headline-level (or level 1)) ; 1-8
>           (op (or operator '=))) ; '>= '<= '> '<
>     (save-excursion
>       (message "Counting of level%s%d outline items (match=%s, scope=%s, skip=%s): %d"
>                op headline-level match scope skip
>                (eval (append (list '+)
>                              (org-map-entries
>                               `(lambda () (if (,op (org-outline-level) ,headline-level) 1 0))
>                               match scope skip)))))))
> #+end_src
>
> usage:
>
> ,----------------------------------------
> | (count-org-items 2 '<= "WAITING" 'file)
> `----------------------------------------
>
> result:
>
> ,------------------------------------------------------------------------------
> | "Counting of level<=2 outline items (match=WAITING, scope=file,
> | skip=nil): 3"
> `------------------------------------------------------------------------------
>
> see C-h f org-map-entries for more info, its very powerfull. Use it
> with M-: (count-org-items ...) or write a more sophisticated
> (interactive) spec.
#+end_quote

-- 
cheers,
Thorsten

Re: Counting number of children under heading

[Eric Abrahamsen]

Thorsten Jolitz <tjolitz@gmail.com> writes:

> Eric Abrahamsen <eric@ericabrahamsen.net> writes:
>
>> I could have sworn someone posted a thing for this just a week or two
>> ago, using `org-map-entries' and the identity function, and counting the
>> results. 
>
> Ups, that was me  ... forgot about it ;)

I thought so!

Re: Counting number of children under heading

[Marvin Doyley]

Hi Thorsten,

Your hidden line cookie is what I am looking for. If I understand it I should do the following

* Fruits [# ]
** Apples
** Pears

M-x org-hlc-toggle-hidden-lines-cookies ?

When ever I do this I get the following error

Symbol’s function definition is void: outline-body visible-p, 

The backtrace is included below.

Thanks
M

Debugger entered--Lisp error: (void-function outline-body-visible-p)
  (outline-body-visible-p)
  (not (outline-body-visible-p))
  (or (not (outline-body-visible-p)) (re-search-forward org-hlc-hidden-lines-cookie-format-regexp (line-end-position) (quote NO-ERROR)))
  (progn (or (not (outline-body-visible-p)) (re-search-forward org-hlc-hidden-lines-cookie-format-regexp (line-end-position) (quote NO-ERROR))))
  (unwind-protect (progn (or (not (outline-body-visible-p)) (re-search-forward org-hlc-hidden-lines-cookie-format-regexp (line-end-position) (quote NO-ERROR)))) (set-match-data save-match-data-internal (quote evaporate)))
  (let ((save-match-data-internal (match-data))) (unwind-protect (progn (or (not (outline-body-visible-p)) (re-search-forward org-hlc-hidden-lines-cookie-format-regexp (line-end-position) (quote NO-ERROR)))) (set-match-data save-match-data-internal (quote evaporate))))
  (save-excursion (let ((save-match-data-internal (match-data))) (unwind-protect (progn (or (not (outline-body-visible-p)) (re-search-forward org-hlc-hidden-lines-cookie-format-regexp (line-end-position) (quote NO-ERROR)))) (set-match-data save-match-data-internal (quote evaporate)))))
  org-hlc-hidden-lines-cookie-status-changed-p()
  (and (outline-on-heading-p) (org-hlc-hidden-lines-cookie-status-changed-p) (org-hlc-set-hidden-lines-cookie))
  (save-excursion (goto-char (point-min)) (and (outline-on-heading-p) (org-hlc-hidden-lines-cookie-status-changed-p) (org-hlc-set-hidden-lines-cookie)) (while (not (eobp)) (outline-next-visible-heading 1) (and (outline-on-heading-p) (org-hlc-hidden-lines-cookie-status-changed-p) (org-hlc-set-hidden-lines-cookie))))
  org-hlc-write-hidden-lines-cookies()
  org-hlc-show-hidden-lines-cookies()
  (if org-hlc-hidden-lines-cookies-on-p (org-hlc-hide-hidden-lines-cookies) (org-hlc-show-hidden-lines-cookies))
  org-hlc-toggle-hidden-lines-cookies()
  call-interactively(org-hlc-toggle-hidden-lines-cookies record nil)
  command-execute(org-hlc-toggle-hidden-lines-cookies record)
  (progn (setq prefix-arg current-prefix-arg) (setq this-command chosen-item) (command-execute chosen-item (quote record)))
  (unwind-protect (progn (setq prefix-arg current-prefix-arg) (setq this-command chosen-item) (command-execute chosen-item (quote record))) (smex-rank chosen-item) (smex-show-key-advice chosen-item) (run-at-time 0.01 nil (function (lambda (cmd) (setq last-repeatable-command cmd))) chosen-item))
  (if smex-custom-action (let ((action smex-custom-action)) (setq smex-custom-action nil) (funcall action chosen-item)) (unwind-protect (progn (setq prefix-arg current-prefix-arg) (setq this-command chosen-item) (command-execute chosen-item (quote record))) (smex-rank chosen-item) (smex-show-key-advice chosen-item) (run-at-time 0.01 nil (function (lambda (cmd) (setq last-repeatable-command cmd))) chosen-item)))
  (let ((chosen-item (intern (smex-completing-read commands initial-input)))) (if smex-custom-action (let ((action smex-custom-action)) (setq smex-custom-action nil) (funcall action chosen-item)) (unwind-protect (progn (setq prefix-arg current-prefix-arg) (setq this-command chosen-item) (command-execute chosen-item (quote record))) (smex-rank chosen-item) (smex-show-key-advice chosen-item) (run-at-time 0.01 nil (function (lambda (cmd) (setq last-repeatable-command cmd))) chosen-item))))
  smex-read-and-run(("toggle-debug-on-error" "org-mode" "text-mode" "artist-mode" "color-theme-snow" "eshell" "load-file" "notes" "org-bibtex-yank" "tea-time" "brain" "insert-date" "org-bibtex-read" "org-hlc-toggle-hidden-lines-cookies" "el-get-install" "org-bibtex-search" "skimCopy" "word-count" "desktop-read" "word-count-mode" "marv:create-scratch-buffer" "matlab-shell" "el-get-list-packages" "wl" "dired" "org-insert-drawer" "text-scale-increase" "org-hlc-hide-hidden-lines-cookies" "org-export-insert-default-template" "python-mode" "desktop-save" "writegood-mode" "artbollocks-mode" "el-get-self-update" "marv:org-entry-wpm" "org-bibtex" "insert-time" "org-capture" "move-border-up" "org-mobile-pull" "org-bibtex-write" "org-bibtex-read-file" "org-habit-toggle-habits" "marv:toggle-line-spacing" "comment-or-uncomment-region" "version" "mail-mode" "reftex-toc" "bibtex-mode" "matlab-mode" ...))
  (if (smex-already-running) (smex-update-and-rerun) (and smex-auto-update (smex-detect-new-commands) (smex-update)) (smex-read-and-run smex-ido-cache))
  smex()
  call-interactively(smex nil nil)

Re: Counting number of children under heading

[Thorsten Jolitz]

Marvin Doyley <marvinpas@gmail.com> writes:

Hi Thorsten,
>
> Your hidden line cookie is what I am looking for. If I understand it I
> should do the following
>
> * Fruits [# ]
> ** Apples
> ** Pears
>
> M-x org-hlc-toggle-hidden-lines-cookies ?
>
> When ever I do this I get the following error
>
> Symbol’s function definition is void: outline-body visible-p, 
>
> The backtrace is included below.

Just tested `org-hlc-toggle-hidden-lines-cookies' with an org file:

,----------------------------------------------------
| 3 matches for "^\* " in buffer: org-outside-org.org
|      15:* Introduction [#30]
|      46:* Org-mode everywhere [#876]
|     923:* Screencasts  [#20]
`----------------------------------------------------

and

,-----------------------------------------------------------
| 12 matches for "^\*\*?\*? " in buffer: org-outside-org.org
|      15:* Introduction [#30]
|      46:* Org-mode everywhere
|      50:** File Structuring
|      54:*** orgstruct  [#39]
|      94:*** Outline with Outshine  [#186]
|     281:** Subtree and Comment Editing
|     285:*** Introduction [#18]
|     304:*** Outorg [#112]
|     417:*** Poporg [#291]
|     709:** Remote Buffer Control [#213]
|     923:* Screencasts  [#20]
`-----------------------------------------------------------

and it seems to work here ... but thats because I always load
outshine.el and therefore took this function for granted:

,------------------------------------------------------------
| outline-body-visible-p is a Lisp function in `outshine.el'.
| 
| (outline-body-visible-p)
`------------------------------------------------------------

I fixed this in master right now, so if you pull the newest version it
should work. 

Note that org-hlc.el is 'wrong' in some ways:
- it only acts when called, not via a hook or so
- it actually modifies the buffer to insert and delete the cookies

but it works more or less, even for massive files.

I tried the right way (visibility change hook and overlays) and noticed
that my user experience went downhill pretty fast in big files - seems
that Emacs display engine is overwhelmed at some point. 

PS 
Why is flyspell-mode turned on automatically in the magit commit-msg
buffer now? I did not do anything about it and don't want it anyway ...

-- 
cheers,
Thorsten

Re: Counting number of children under heading

[Doyley, Marvin M.]

Hi Thorsten,

It is not working like a charm.

Thanks
M

Re: Counting number of children under heading

[Sebastien Vauban]

Bastien wrote:
> Marvin Doyley <marvinpas-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org> writes:
>
>> I would like to automatically count the number of children under a
>> given heading. For example, I would like to have
>>
>> * Cars (2)
>> ** BMW
>> ** Escort
>
> There is no such feature in Org, but I seem to remember someone
> hack something similar -- maybe someone else with a better memory
> can tell.

IIRC, Sacha Chua had made such a hack -- must be found on her impressive
blog.

Best regards,
  Seb

-- 
Sebastien Vauban

Re: Counting number of children under heading

[Sacha Chua]

Sebastien Vauban <sva-news@mygooglest.com>
writes:

>>> I would like to automatically count the number of children under a
>>> given heading. For example, I would like to have
>>> * Cars (2)
>>> ** BMW
>>> ** Escort
>> There is no such feature in Org, but I seem to remember someone
>> hack something similar -- maybe someone else with a better memory
>> can tell.
> IIRC, Sacha Chua had made such a hack -- must be found on her impressive
> blog.

I don't remember doing something like that - I tend to use [X] for
automatically counted cookies...

Do you need the number of children to be part of the text, or is it okay
for that to be temporarily displayed? 

Sacha

Re: Counting number of children under heading

[Sebastien Vauban]

Hello Sacha,

Sacha Chua wrote:
> Sebastien Vauban writes:
>
>>>> I would like to automatically count the number of children under a
>>>> given heading. For example, I would like to have
>>>> * Cars (2)
>>>> ** BMW
>>>> ** Escort
>>>
>>> There is no such feature in Org, but I seem to remember someone
>>> hack something similar -- maybe someone else with a better memory
>>> can tell.
>>
>> IIRC, Sacha Chua had made such a hack -- must be found on her impressive
>> blog.
>
> I don't remember doing something like that - I tend to use [X] for
> automatically counted cookies...
>
> Do you need the number of children to be part of the text, or is it
> okay for that to be temporarily displayed?

Yes, I almost remembered what you wrote in
http://sachachua.com/blog/2008/01/outlining-your-notes-with-org/,
section "Getting a Sense of Progress". Still, it is about counting
headlines, but with a special cookie you add.

Best regards,
  Seb

-- 
Sebastien Vauban

Re: Counting number of children under heading

[Sacha Chua]

Sebastien Vauban <sva-news@mygooglest.com>
writes:

Hello, Seb, all!

> Yes, I almost remembered what you wrote in
> http://sachachua.com/blog/2008/01/outlining-your-notes-with-org/,
> section "Getting a Sense of Progress". Still, it is about counting
> headlines, but with a special cookie you add.

Wow, I totally forgot about that. =) Good thing you remembered!

Anyway, Marvin, you (or someone) will probably be able to update that
code and get it to work for you, if you don't mind having checkboxes
instead of TODO. If you want it to work for plain headings, we could
probably figure out a custom function that updates numbers in
parentheses with the number of child headings. (Assuming you don't have
numbers in parentheses generally, or maybe we should use curly braces
instead? Decisions, decisions...) It's likely to be code that's going to
be in your custom config, since the need seems uncommon. =)

Sacha