Hi I have a org file with has a lot source blocks of the form #+begin_src matlab :results output raw :exports code :eval never-export close all N = 3; % number of chebyshev nodes n = 1; % polytropic index iters = 1; % iterations j=[0 1 2 3]; z=cos((pi*j)/3); y=1-(0.5*(z+1)).^2; a=n*(8); a2=eye(3+1)*a; disp('\begin{align*}') disp('A_{1,k-1}&=') disp('\begin{pmatrix}') fprintf('%g &%g &%g &%g\\\\\n',a2') disp('\end{pmatrix}=OK\\') disp('\end{align*}') #+end_src #+RESULTS: \begin{align*} A_{1,k-1}&= \begin{pmatrix} 8 &0 &0 &0\\ 0 &8 &0 &0\\ 0 &0 &8 &0\\ 0 &0 &0 &8\\ \end{pmatrix}=OK\\ \end{align*} Two questions. 1. Is there any equivalent to org-update-all-dblocks for the source blocks? 2. I want to export the org file to latex, in the current setting the source blocks are also exported. I tried #+begin_src matlab :results output raw :eval never-export but it did not help. Thanks Uwe Brauer

[-- Attachment #1: Type: text/plain, Size: 600 bytes --] Hi Uwe, 1. Is there any equivalent to org-update-all-dblocks for the source > blocks? > I think you want org-babel-execute-buffer: Documentation Call org-babel-execute-src-block on every source block in the current buffer. 2. I want to export the org file to latex, in the current setting > the source blocks are also exported. I tried > #+begin_src matlab :results output raw :eval never-export > but it did not help. > Normally, =:results output= should be enough, but there might be some peculiarities with matlab blocks that change this behavior. --Diego [-- Attachment #2: Type: text/html, Size: 1457 bytes --]

[-- Attachment #1: Type: text/plain, Size: 703 bytes --] Hi Diego Thanks for the quick answer > Hi Uwe, > 1. Is there any equivalent to org-update-all-dblocks for the source > I think you want org-babel-execute-buffer: Right, thanks!!! > Documentation > Call org-babel-execute-src-block on every source block in > the current buffer. > 2. I want to export the org file to latex, in the current setting > Normally, =:results output= should be enough, but there might be some > peculiarities with matlab blocks that change this behavior. That did not work: I tried #+begin_src matlab :results output But when I exported the org file to latex, the matlab code was also exported. Strange Anybody has an idea? [-- Attachment #2: smime.p7s --] [-- Type: application/pkcs7-signature, Size: 5673 bytes --]

[-- Attachment #1: Type: text/plain, Size: 818 bytes --] > That did not work: I tried > #+begin_src matlab :results output > But when I exported the org file to latex, the matlab code was also > exported. Strange The only solution I am aware is to have something like this (defun my-latex-filter-src-blocks (text backend info) "Remove source blocks from latex export." (when (org-export-derived-backend-p backend 'latex) "%% [removed source block]\n")) (defun my-html-filter-src-blocks (text backend info) "Remove source blocks from latex export." (when (org-export-derived-backend-p backend 'html) "%% [removed source block]\n")) (add-to-list 'org-export-filter-src-block-functions 'my-latex-filter-src-blocks) (add-to-list 'org-export-filter-src-block-functions 'my-html-filter-src-blocks) [-- Attachment #2: smime.p7s --] [-- Type: application/pkcs7-signature, Size: 5673 bytes --]

```
On Tuesday, 13 Oct 2020 at 09:26, Uwe Brauer wrote:
> That did not work: I tried
> #+begin_src matlab :results output
> But when I exported the org file to latex, the matlab code was also
> exported. Strange
If you want the output only, you also need to add ":exports results".
--
: Eric S Fraga via Emacs 28.0.50, Org release_9.4-57-g8402c4
```

[-- Attachment #1: Type: text/plain, Size: 388 bytes --] Uwe Brauer <oub@mat.ucm.es> writes: > That did not work: I tried > #+begin_src matlab :results output > > But when I exported the org file to latex, the matlab code was also > exported. Strange Do you use :exports results? :results output switches to show what is printed to stdout Best wishes, Arne -- Unpolitisch sein heißt politisch sein ohne es zu merken [-- Attachment #2: signature.asc --] [-- Type: application/pgp-signature, Size: 1125 bytes --]

[-- Attachment #1: Type: text/plain, Size: 1030 bytes --] >>> "ESF" == Eric S Fraga <e.fraga@ucl.ac.uk> writes: > On Tuesday, 13 Oct 2020 at 09:26, Uwe Brauer wrote: >> That did not work: I tried >> #+begin_src matlab :results output >> But when I exported the org file to latex, the matlab code was also >> exported. Strange > If you want the output only, you also need to add ":exports results". Hm not really #+begin_src matlab :exports results close all N = 3; % number of chebyshev nodes n = 1; % polytropic index iters = 1; % iterations j=[0 1 2 3]; z=cos((pi*j)/3); y=1-(0.5*(z+1)).^2; a=n*(8); a2=eye(3+1)*a; disp('\begin{align*}') disp('A_{1,k-1}&=') disp('\begin{pmatrix}') fprintf('%g &%g &%g &%g\\\\\n',a2') disp('\end{pmatrix}=OK\\') disp('\end{align*}') #+end_src when I export this to latex I obtain \begin{verbatim} \begin{align*} A_{1,k-1}&= \begin{pmatrix} 8 &0 &0 &0\\ 0 &8 &0 &0\\ 0 &0 &8 &0\\ 0 &0 &0 &8\\ \end{pmatrix}=OK\\ \end{align*} \end{verbatim} Which is not what I want. I don't want a verbatim environment [-- Attachment #2: smime.p7s --] [-- Type: application/pkcs7-signature, Size: 5673 bytes --]

[-- Attachment #1: Type: text/plain, Size: 1368 bytes --] >>> "AB" == Arne Babenhauserheide <arne_bab@web.de> writes: > Uwe Brauer <oub@mat.ucm.es> writes: >> That did not work: I tried >> #+begin_src matlab :results output >> >> But when I exported the org file to latex, the matlab code was also >> exported. Strange > Do you use :exports results? > :results output switches to show what is printed to stdout See my answer to Eric It does not do want I want #+begin_src matlab :exports results close all N = 3; % number of chebyshev nodes n = 1; % polytropic index iters = 1; % iterations j=[0 1 2 3]; z=cos((pi*j)/3); y=1-(0.5*(z+1)).^2; a=n*(8); a2=eye(3+1)*a; disp('\begin{align*}') disp('A_{1,k-1}&=') disp('\begin{pmatrix}') fprintf('%g &%g &%g &%g\\\\\n',a2') disp('\end{pmatrix}=OK\\') disp('\end{align*}') #+end_src Leads to \begin{verbatim} \begin{align*} A_{1,k-1}&= \begin{pmatrix} 8 &0 &0 &0\\ 0 &8 &0 &0\\ 0 &0 &8 &0\\ 0 &0 &0 &8\\ \end{pmatrix}=OK\\ \end{align*} \end{verbatim} So at the moment the only solution I can think of is to use the code I posted (defun my-latex-filter-src-blocks (text backend info) "Remove source blocks from latex export." (when (org-export-derived-backend-p backend 'latex) "%% [removed source block]\n")) (add-to-list 'org-export-filter-src-block-functions 'my-latex-filter-src-blocks) [-- Attachment #2: smime.p7s --] [-- Type: application/pkcs7-signature, Size: 5673 bytes --]

[-- Attachment #1: Type: text/plain, Size: 2386 bytes --] Uwe, In my testing (using octave since I don't have matlab, but I hope it's similar), using = :exports none :results output raw= seems to produce the desired output: #+begin_src octave :exports results :results output raw close all N = 3; % number of chebyshev nodes n = 1; % polytropic index iters = 1; % iterations j=[0 1 2 3]; z=cos((pi*j)/3); y=1-(0.5*(z+1)).^2; a=n*(8); a2=eye(3+1)*a; disp('\begin{align*}') disp('A_{1,k-1}&=') disp('\begin{pmatrix}') fprintf('%g &%g &%g &%g\\\\\n',a2') disp('\end{pmatrix}=OK\\') disp('\end{align*}') #+end_src #+RESULTS: \begin{align*} A_{1,k-1}&= \begin{pmatrix} 8 &0 &0 &0\\ 0 &8 &0 &0\\ 0 &0 &8 &0\\ 0 &0 &0 &8\\ \end{pmatrix}=OK\\ \end{align*} Which renders the matrix correctly. I first tried with =:exports results=, but that for some reason results in the results being included twice in the LaTeX output. I'm not sure why. Hope this helps, --Diego On Tue, Oct 13, 2020 at 1:36 PM Uwe Brauer <oub@mat.ucm.es> wrote: > >>> "AB" == Arne Babenhauserheide <arne_bab@web.de> writes: > > > Uwe Brauer <oub@mat.ucm.es> writes: > > >> That did not work: I tried > >> #+begin_src matlab :results output > >> > >> But when I exported the org file to latex, the matlab code was also > >> exported. Strange > > > Do you use :exports results? > > > :results output switches to show what is printed to stdout > > See my answer to Eric > > It does not do want I want > #+begin_src matlab :exports results > close all > N = 3; % number of chebyshev nodes > n = 1; % polytropic index > iters = 1; % iterations > j=[0 1 2 3]; > z=cos((pi*j)/3); > y=1-(0.5*(z+1)).^2; > a=n*(8); > a2=eye(3+1)*a; > disp('\begin{align*}') > disp('A_{1,k-1}&=') > disp('\begin{pmatrix}') > fprintf('%g &%g &%g &%g\\\\\n',a2') > disp('\end{pmatrix}=OK\\') > disp('\end{align*}') > #+end_src > > Leads to > > \begin{verbatim} > \begin{align*} > A_{1,k-1}&= > \begin{pmatrix} > 8 &0 &0 &0\\ > 0 &8 &0 &0\\ > 0 &0 &8 &0\\ > 0 &0 &0 &8\\ > \end{pmatrix}=OK\\ > \end{align*} > \end{verbatim} > > So at the moment the only solution I can think of is to use the code I > posted > > (defun my-latex-filter-src-blocks (text backend info) > "Remove source blocks from latex export." > (when (org-export-derived-backend-p backend 'latex) > "%% [removed source block]\n")) > > (add-to-list 'org-export-filter-src-block-functions > 'my-latex-filter-src-blocks) > [-- Attachment #2: Type: text/html, Size: 3526 bytes --]

[-- Attachment #1: Type: text/plain, Size: 381 bytes --] >>> "DZ" == Diego Zamboni <diego@zzamboni.org> writes: Hi Diego > Uwe, > In my testing (using octave since I don't have matlab, but I hope it's > similar), using = :exports none :results output raw= seems to produce the > desired output: > #+begin_src octave :exports results :results output raw That's it. That solves it, thanks so my function is not necessary. Good to know [-- Attachment #2: smime.p7s --] [-- Type: application/pkcs7-signature, Size: 5673 bytes --]

```
On Tuesday, 13 Oct 2020 at 14:56, Uwe Brauer wrote:
>>>> "DZ" == Diego Zamboni <diego@zzamboni.org> writes:
>> #+begin_src octave :exports results :results output raw
>
> That's it. That solves it, thanks so my function is not necessary. Good
> to know
The problem with =raw= is that you may find you have to manually delete
the previous results if you change and re-execute the src block. Use
=latex= instead.
--
: Eric S Fraga via Emacs 28.0.50, Org release_9.4-57-g8402c4
```

[-- Attachment #1: Type: text/plain, Size: 508 bytes --] >>> "ESF" == Eric S Fraga <e.fraga@ucl.ac.uk> writes: > On Tuesday, 13 Oct 2020 at 14:56, Uwe Brauer wrote: >>>>> "DZ" == Diego Zamboni <diego@zzamboni.org> writes: >>> #+begin_src octave :exports results :results output raw >> >> That's it. That solves it, thanks so my function is not necessary. Good >> to know > The problem with =raw= is that you may find you have to manually delete > the previous results if you change and re-execute the src block. Use > =latex= instead. Ok, thanks [-- Attachment #2: smime.p7s --] [-- Type: application/pkcs7-signature, Size: 5673 bytes --]