* Computations on properties
@ 2013-10-09 12:19 Thierry Pellé
2013-10-09 12:50 ` Thorsten Jolitz
` (2 more replies)
0 siblings, 3 replies; 11+ messages in thread
From: Thierry Pellé @ 2013-10-09 12:19 UTC (permalink / raw)
To: emacs-orgmode
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?
Thanks
Thierry
PS: I don't want to use org spreadsheet
^ permalink raw reply [flat|nested] 11+ messages in thread* Re: Computations on properties 2013-10-09 12:19 Computations on properties Thierry Pellé @ 2013-10-09 12:50 ` Thorsten Jolitz 2013-10-09 13:32 ` Thierry Pellé 2013-10-09 15:29 ` Eric Abrahamsen 2013-10-09 19:27 ` Michael Brand 2 siblings, 1 reply; 11+ messages in thread From: Thorsten Jolitz @ 2013-10-09 12:50 UTC (permalink / raw) To: emacs-orgmode Thierry Pellé <thierry.pelle@soliavos.fr> 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? > > Thanks > Thierry > > PS: I don't want to use org spreadsheet But that would probably be the appropriate tool. Otherwise you could use the property API in an elisp program ,------------------------------------------------------ | http://orgmode.org/manual/Using-the-property-API.html `------------------------------------------------------ to read out the property values. Then do the calculation and finally add a new property with the result. -- cheers, Thorsten ^ permalink raw reply [flat|nested] 11+ messages in thread
* Re: Computations on properties 2013-10-09 12:50 ` Thorsten Jolitz @ 2013-10-09 13:32 ` Thierry Pellé 0 siblings, 0 replies; 11+ messages in thread From: Thierry Pellé @ 2013-10-09 13:32 UTC (permalink / raw) To: emacs-orgmode Thank you for the reply > > PS: I don't want to use org spreadsheet > > But that would probably be the appropriate tool. I know, but I can't figure out how to extract the speadsheet computed value into the text... > Otherwise you could use > the property API in an elisp program > > ,------------------------------------------------------ > | http://orgmode.org/manual/Using-the-property-API.html > `------------------------------------------------------ > > to read out the property values. Then do the calculation and finally add > a new property with the result. > I look at it. Thanks. ^ permalink raw reply [flat|nested] 11+ messages in thread
* Re: Computations on properties 2013-10-09 12:19 Computations on properties Thierry Pellé 2013-10-09 12:50 ` Thorsten Jolitz @ 2013-10-09 15:29 ` Eric Abrahamsen 2013-10-09 17:12 ` Thorsten Jolitz 2013-10-09 19:27 ` Michael Brand 2 siblings, 1 reply; 11+ messages in thread From: Eric Abrahamsen @ 2013-10-09 15:29 UTC (permalink / raw) To: emacs-orgmode Thierry Pellé <thierry.pelle@soliavos.fr> 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 ^ permalink raw reply [flat|nested] 11+ messages in thread
* Re: Computations on properties 2013-10-09 15:29 ` Eric Abrahamsen @ 2013-10-09 17:12 ` Thorsten Jolitz 2013-10-09 18:21 ` Eric Abrahamsen 2013-10-09 18:23 ` Eric Schulte 0 siblings, 2 replies; 11+ messages in thread From: Thorsten Jolitz @ 2013-10-09 17:12 UTC (permalink / raw) To: emacs-orgmode Eric Abrahamsen <eric@ericabrahamsen.net> writes: > Thierry Pellé <thierry.pelle@soliavos.fr> 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... This is probably not really what you want, but at least somehow related. I would not know how to do this via source-block arguments, but maybe you can use the results of one source-block (that produces the data) as input for another source-block that does the real work. * Heading 1 :match: :PROPERTIES: :ID: 3f78f08a-ccca-4fc0-aba9-2a192f7a0e5a :foo: 5 :bar: puppy :END: * Heading 2 :PROPERTIES: :ID: 3f78f08a-ccca-4fc0-aba9-2a192f7a0e5b :foo: 6 :bar: yuppy :END: * Heading 3 :match: :PROPERTIES: :ID: 3f78f08a-ccca-4fc0-aba9-2a192f7a0e5c :foo: 7 :bar: hippie :END: #+begin_src emacs-lisp :results raw (let ((lst)) (org-map-entries (lambda () (cons (org-entry-properties) lst)) "match" 'file)) #+end_src #+results: ((((FILE . /home/tj/News/drafts/drafts/419) (TAGS . :match:) (ALLTAGS . :match:) (BLOCKED . ) (ID . 3f78f08a-ccca-4fc0-aba9-2a192f7a0e5a) (foo . 5) (bar . puppy) (CATEGORY . 419))) (((FILE . /home/tj/News/drafts/drafts/419) (TAGS . :match:) (ALLTAGS . :match:) (BLOCKED . ) (ID . 3f78f08a-ccca-4fc0-aba9-2a192f7a0e5c) (foo . 7) (bar . hippie) (CATEGORY . 419)))) -- cheers, Thorsten ^ permalink raw reply [flat|nested] 11+ messages in thread
* Re: Computations on properties 2013-10-09 17:12 ` Thorsten Jolitz @ 2013-10-09 18:21 ` Eric Abrahamsen 2013-10-09 18:23 ` Eric Schulte 1 sibling, 0 replies; 11+ messages in thread From: Eric Abrahamsen @ 2013-10-09 18:21 UTC (permalink / raw) To: emacs-orgmode Thorsten Jolitz <tjolitz@gmail.com> writes: > Eric Abrahamsen <eric@ericabrahamsen.net> writes: > >> Thierry Pellé <thierry.pelle@soliavos.fr> 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... > > This is probably not really what you want, but at least somehow related. I > would not know how to do this via source-block arguments, but maybe you can > use the results of one source-block (that produces the data) as input for > another source-block that does the real work. Sure, it's certainly doable, and in more than one way, but I think that's part of the problem: the reason the table-to-src-block-var process is so great is that it feels purpose-built to do what it does. For properties you've got search, column view, and the API, but it never quite feels like the potential is unlocked... > * Heading 1 :match: > :PROPERTIES: > :ID: 3f78f08a-ccca-4fc0-aba9-2a192f7a0e5a > :foo: 5 > :bar: puppy > :END: > > * Heading 2 > :PROPERTIES: > :ID: 3f78f08a-ccca-4fc0-aba9-2a192f7a0e5b > :foo: 6 > :bar: yuppy > :END: > > > * Heading 3 :match: > :PROPERTIES: > :ID: 3f78f08a-ccca-4fc0-aba9-2a192f7a0e5c > :foo: 7 > :bar: hippie > :END: > > > #+begin_src emacs-lisp :results raw > (let ((lst)) > (org-map-entries > (lambda () (cons (org-entry-properties) lst)) > "match" 'file)) > #+end_src > > #+results: > ((((FILE . /home/tj/News/drafts/drafts/419) (TAGS . :match:) (ALLTAGS > . :match:) (BLOCKED . ) (ID . 3f78f08a-ccca-4fc0-aba9-2a192f7a0e5a) (foo . 5) > (bar . puppy) (CATEGORY . 419))) (((FILE . /home/tj/News/drafts/drafts/419) > (TAGS . :match:) (ALLTAGS . :match:) (BLOCKED . ) (ID . > 3f78f08a-ccca-4fc0-aba9-2a192f7a0e5c) (foo . 7) (bar . hippie) (CATEGORY . > 419)))) ^ permalink raw reply [flat|nested] 11+ messages in thread
* Re: Computations on properties 2013-10-09 17:12 ` Thorsten Jolitz 2013-10-09 18:21 ` Eric Abrahamsen @ 2013-10-09 18:23 ` Eric Schulte 2013-10-10 4:52 ` Eric Abrahamsen 1 sibling, 1 reply; 11+ messages in thread From: Eric Schulte @ 2013-10-09 18:23 UTC (permalink / raw) To: Thorsten Jolitz; +Cc: emacs-orgmode [-- Attachment #1: Type: text/plain, Size: 2736 bytes --] Thorsten Jolitz <tjolitz@gmail.com> writes: > Eric Abrahamsen <eric@ericabrahamsen.net> writes: > >> Thierry Pellé <thierry.pelle@soliavos.fr> 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... > > This is probably not really what you want, but at least somehow related. I > would not know how to do this via source-block arguments, but maybe you can > use the results of one source-block (that produces the data) as input for > another source-block that does the real work. > > * Heading 1 :match: > :PROPERTIES: > :ID: 3f78f08a-ccca-4fc0-aba9-2a192f7a0e5a > :foo: 5 > :bar: puppy > :END: > > * Heading 2 > :PROPERTIES: > :ID: 3f78f08a-ccca-4fc0-aba9-2a192f7a0e5b > :foo: 6 > :bar: yuppy > :END: > > > * Heading 3 :match: > :PROPERTIES: > :ID: 3f78f08a-ccca-4fc0-aba9-2a192f7a0e5c > :foo: 7 > :bar: hippie > :END: > > > #+begin_src emacs-lisp :results raw > (let ((lst)) > (org-map-entries > (lambda () (cons (org-entry-properties) lst)) > "match" 'file)) > #+end_src > > #+results: > ((((FILE . /home/tj/News/drafts/drafts/419) (TAGS . :match:) (ALLTAGS > . :match:) (BLOCKED . ) (ID . 3f78f08a-ccca-4fc0-aba9-2a192f7a0e5a) (foo . 5) > (bar . puppy) (CATEGORY . 419))) (((FILE . /home/tj/News/drafts/drafts/419) > (TAGS . :match:) (ALLTAGS . :match:) (BLOCKED . ) (ID . > 3f78f08a-ccca-4fc0-aba9-2a192f7a0e5c) (foo . 7) (bar . hippie) (CATEGORY . > 419)))) Or maybe something like the following... [-- Warning: decoded text below may be mangled, UTF-8 assumed --] [-- Attachment #2: property-computation.org --] [-- Type: text/x-org, Size: 478 bytes --] * Mean Calculation :PROPERTIES: :VAL1: 5 :VAL2: 10 :COEF: 10 :END: #+begin_src python :var props=(mapcar (lambda (p) (list (car p) (cdr p))) (org-entry-properties)) return props #+end_src #+RESULTS: | FILE | /tmp/property-computation.org | | BLOCKED | | | VAL1 | 5 | | VAL2 | 10 | | COEF | 10 | | CATEGORY | property-computation | [-- Attachment #3: Type: text/plain, Size: 63 bytes --] -- Eric Schulte https://cs.unm.edu/~eschulte PGP: 0x614CA05D ^ permalink raw reply [flat|nested] 11+ messages in thread
* Re: Computations on properties 2013-10-09 18:23 ` Eric Schulte @ 2013-10-10 4:52 ` Eric Abrahamsen 0 siblings, 0 replies; 11+ messages in thread From: Eric Abrahamsen @ 2013-10-10 4:52 UTC (permalink / raw) To: emacs-orgmode Eric Schulte <schulte.eric@gmail.com> writes: > Thorsten Jolitz <tjolitz@gmail.com> writes: > >> Eric Abrahamsen <eric@ericabrahamsen.net> writes: >> >>> Thierry Pellé <thierry.pelle@soliavos.fr> 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... >> >> This is probably not really what you want, but at least somehow related. I >> would not know how to do this via source-block arguments, but maybe you can >> use the results of one source-block (that produces the data) as input for >> another source-block that does the real work. >> >> * Heading 1 :match: >> :PROPERTIES: >> :ID: 3f78f08a-ccca-4fc0-aba9-2a192f7a0e5a >> :foo: 5 >> :bar: puppy >> :END: >> >> * Heading 2 >> :PROPERTIES: >> :ID: 3f78f08a-ccca-4fc0-aba9-2a192f7a0e5b >> :foo: 6 >> :bar: yuppy >> :END: >> >> >> * Heading 3 :match: >> :PROPERTIES: >> :ID: 3f78f08a-ccca-4fc0-aba9-2a192f7a0e5c >> :foo: 7 >> :bar: hippie >> :END: >> >> >> #+begin_src emacs-lisp :results raw >> (let ((lst)) >> (org-map-entries >> (lambda () (cons (org-entry-properties) lst)) >> "match" 'file)) >> #+end_src >> >> #+results: >> ((((FILE . /home/tj/News/drafts/drafts/419) (TAGS . :match:) (ALLTAGS >> . :match:) (BLOCKED . ) (ID . 3f78f08a-ccca-4fc0-aba9-2a192f7a0e5a) (foo . 5) >> (bar . puppy) (CATEGORY . 419))) (((FILE . /home/tj/News/drafts/drafts/419) >> (TAGS . :match:) (ALLTAGS . :match:) (BLOCKED . ) (ID . >> 3f78f08a-ccca-4fc0-aba9-2a192f7a0e5c) (foo . 7) (bar . hippie) (CATEGORY . >> 419)))) > > Or maybe something like the following... > > * Mean Calculation > :PROPERTIES: > :VAL1: 5 > :VAL2: 10 > :COEF: 10 > :END: > > #+begin_src python :var props=(mapcar (lambda (p) (list (car p) (cdr p))) (org-entry-properties)) > return props > #+end_src This is very cool! Thanks. > #+RESULTS: > | FILE | /tmp/property-computation.org | > | BLOCKED | | > | VAL1 | 5 | > | VAL2 | 10 | > | COEF | 10 | > | CATEGORY | property-computation | ^ permalink raw reply [flat|nested] 11+ messages in thread
* Re: Computations on properties 2013-10-09 12:19 Computations on properties Thierry Pellé 2013-10-09 12:50 ` Thorsten Jolitz 2013-10-09 15:29 ` Eric Abrahamsen @ 2013-10-09 19:27 ` Michael Brand 2013-10-10 6:39 ` Thierry Pellé 2 siblings, 1 reply; 11+ messages in thread From: Michael Brand @ 2013-10-09 19:27 UTC (permalink / raw) To: Thierry Pellé; +Cc: Org Mode Hi Thierry On Wed, Oct 9, 2013 at 2:19 PM, Thierry Pellé <thierry.pelle@soliavos.fr> wrote: > Mean Calculation=RES (where RES is the value of the result) One more variant would be to use inline source block calls either interactively with C-c C-c or during export. An example with shell (python would be very similar) or the built-in Emacs Lisp is in the Emacs Regression Test ERT in the top heading "use case of reading entry properties" here: http://orgmode.org/w/?p=org-mode.git;a=blob;f=testing/examples/babel.org Your use case, here with Emacs Lisp, would be e. g.: -------------------------------- * Mean Calculation :PROPERTIES: :VAL1: 5 :VAL2: 10 :COEF: 10 :END: Mean Calculation = call_mean() =5.454545454545454= * code :noexport: #+NAME: mean #+HEADER: :var val1='nil #+HEADER: :var val2='nil #+HEADER: :var coef='nil #+BEGIN_SRC emacs-lisp :exports none (setq val1 (string-to-number (org-entry-get org-babel-current-src-block-location "VAL1" t)) val2 (string-to-number (org-entry-get org-babel-current-src-block-location "VAL2" t)) coef (string-to-number (org-entry-get org-babel-current-src-block-location "COEF" t))) (/ (+ (* val1 coef) val2) (+ coef 1.0)) #+END_SRC -------------------------------- Michael ^ permalink raw reply [flat|nested] 11+ messages in thread
* Re: Computations on properties 2013-10-09 19:27 ` Michael Brand @ 2013-10-10 6:39 ` Thierry Pellé 2013-10-10 9:04 ` Michael Brand 0 siblings, 1 reply; 11+ messages in thread From: Thierry Pellé @ 2013-10-10 6:39 UTC (permalink / raw) To: emacs-orgmode After some tests : ==> the idea of Michael > -------------------------------- > * Mean Calculation > :PROPERTIES: > :VAL1: 5 > :VAL2: 10 > :COEF: 10 > :END: > > Mean Calculation = call_mean() =5.454545454545454= > > * code :noexport: > #+NAME: mean > #+HEADER: :var val1='nil > #+HEADER: :var val2='nil > #+HEADER: :var coef='nil > #+BEGIN_SRC emacs-lisp :exports none > (setq > val1 (string-to-number (org-entry-get > org-babel-current-src-block-location "VAL1" t)) > val2 (string-to-number (org-entry-get > org-babel-current-src-block-location "VAL2" t)) > coef (string-to-number (org-entry-get > org-babel-current-src-block-location "COEF" t))) > (/ (+ (* val1 coef) val2) (+ coef 1.0)) > #+END_SRC > -------------------------------- give an error ( "Symbol's value as variable is void: org-babel-current-src-block-location") ==> After some tests, it works in changing the "setq" part as val1 (or val1 (string-to-number (org-entry-get org-babel-current-src-block-location "VAL1" t) )) I can't figure out why... ==> I will try with python... Thanks ^ permalink raw reply [flat|nested] 11+ messages in thread
* Re: Computations on properties 2013-10-10 6:39 ` Thierry Pellé @ 2013-10-10 9:04 ` Michael Brand 0 siblings, 0 replies; 11+ messages in thread From: Michael Brand @ 2013-10-10 9:04 UTC (permalink / raw) To: Thierry Pellé; +Cc: Org Mode, Eric Schulte [-- Attachment #1: Type: text/plain, Size: 2259 bytes --] Hi Thierry On Thu, Oct 10, 2013 at 8:39 AM, Thierry Pellé <thierry.pelle@soliavos.fr> wrote: > After some tests : > ==> the idea of Michael >> -------------------------------- >> * Mean Calculation >> :PROPERTIES: >> :VAL1: 5 >> :VAL2: 10 >> :COEF: 10 >> :END: >> >> Mean Calculation = call_mean() =5.454545454545454= >> >> * code :noexport: >> #+NAME: mean >> #+HEADER: :var val1='nil >> #+HEADER: :var val2='nil >> #+HEADER: :var coef='nil >> #+BEGIN_SRC emacs-lisp :exports none >> (setq >> val1 (string-to-number (org-entry-get >> org-babel-current-src-block-location "VAL1" t)) >> val2 (string-to-number (org-entry-get >> org-babel-current-src-block-location "VAL2" t)) >> coef (string-to-number (org-entry-get >> org-babel-current-src-block-location "COEF" t))) >> (/ (+ (* val1 coef) val2) (+ coef 1.0)) >> #+END_SRC >> -------------------------------- > > give an error ( "Symbol's value as variable is void: > org-babel-current-src-block-location") This I would expect from an org-version older than 8.1. Check C-h v org-babel-current-src-block-location M-x org-version But if you did not change the version there might be some problem before the first loading of ob-core.el. If you can reproduce it, maybe with a fresh started Emacs, I hope that someone more familiar with autoload etc. than me can help. > ==> After some tests, it works in changing the "setq" part as > val1 (or val1 (string-to-number > (org-entry-get org-babel-current-src-block-location "VAL1" t) > )) This does still not deal with all cases. As you seem to dive deeper please forget my simplified version posted earlier and see testing/examples/babel.org. > I can't figure out why... See the attached patch that adds comments to testing/examples/babel.org for the two "or" and more. CCed Eric Schulte who I would like to ask to review and apply the patch. > ==> I will try with python... Start from the shell example in testing/examples/babel.org Did you check if you need the t or nil for org-entry-get? Michael [-- Attachment #2: 0001-Babel-add-comments-to-ERT-for-reading-properties.patch.txt --] [-- Type: text/plain, Size: 1632 bytes --] From 0b7caf6adfcab1a6ad2b1aa330e7bd15c3be33d3 Mon Sep 17 00:00:00 2001 From: Michael Brand <michael.ch.brand@gmail.com> Date: Thu, 10 Oct 2013 11:02:19 +0200 Subject: [PATCH] Babel: add comments to ERT for reading properties * testing/examples/babel.org (use case of reading entry properties): Add comments to function definitions. --- testing/examples/babel.org | 8 ++++++++ 1 file changed, 8 insertions(+) diff --git a/testing/examples/babel.org b/testing/examples/babel.org index b1f1702..5c71834 100644 --- a/testing/examples/babel.org +++ b/testing/examples/babel.org @@ -413,6 +413,9 @@ Note: Just export of a property can be done with a macro: {{{property(a)}}}. **** function definition +comments for ":var": +- The "or" is to deal with a property not present. +- The t is to get property inheritance. #+NAME: src_block_location_shell #+HEADER: :var a=(or (org-entry-get org-babel-current-src-block-location "a" t) "0") #+HEADER: :var b=(or (org-entry-get org-babel-current-src-block-location "b" t) "0") @@ -433,6 +436,11 @@ Note: Just export of a property can be done with a macro: {{{property(a)}}}. #+HEADER: :var e='nil #+BEGIN_SRC emacs-lisp :exports results (setq + ;; - The first `or' together with ":var <var>='nil' is to check for + ;; a value bound from an optional call argument, in the examples + ;; here: c=5, e=6 + ;; - The second `or' is to deal with a property not present + ;; - The t is to get property inheritance a (or a (string-to-number (or (org-entry-get org-babel-current-src-block-location "a" t) "0"))) -- 1.7.12.4 (Apple Git-37) ^ permalink raw reply related [flat|nested] 11+ messages in thread
end of thread, other threads:[~2013-10-10 9:04 UTC | newest] Thread overview: 11+ messages (download: mbox.gz / follow: Atom feed) -- links below jump to the message on this page -- 2013-10-09 12:19 Computations on properties Thierry Pellé 2013-10-09 12:50 ` Thorsten Jolitz 2013-10-09 13:32 ` Thierry Pellé 2013-10-09 15:29 ` Eric Abrahamsen 2013-10-09 17:12 ` Thorsten Jolitz 2013-10-09 18:21 ` Eric Abrahamsen 2013-10-09 18:23 ` Eric Schulte 2013-10-10 4:52 ` Eric Abrahamsen 2013-10-09 19:27 ` Michael Brand 2013-10-10 6:39 ` Thierry Pellé 2013-10-10 9:04 ` Michael Brand
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