* ob-octave.el raise error after execute src block
@ 2018-03-22 23:55 stardiviner
2018-03-23 0:09 ` Eric S Fraga
0 siblings, 1 reply; 3+ messages in thread
From: stardiviner @ 2018-03-22 23:55 UTC (permalink / raw)
To: org-mode
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I got the following error after executing src block:
```
error: invalid call to script /usr/share/octave/4.2.2/m/help/ans.m
```
Here is my code:
#+begin_src octave :results file :dir "data/images" :file "figure1.png"
clf ();surf (peaks);saveas (1,"figure1.png");#+end_src
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* Re: ob-octave.el raise error after execute src block
2018-03-22 23:55 ob-octave.el raise error after execute src block stardiviner
@ 2018-03-23 0:09 ` Eric S Fraga
2018-03-23 8:16 ` Need somebody knows Octave help on ob-octave.el error stardiviner
0 siblings, 1 reply; 3+ messages in thread
From: Eric S Fraga @ 2018-03-23 0:09 UTC (permalink / raw)
To: stardiviner; +Cc: org-mode
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On Friday, 23 Mar 2018 at 07:55, stardiviner wrote:
> I got the following error after executing src block:
>
> ```
>
> error: invalid call to script /usr/share/octave/4.2.2/m/help/ans.m
I see the same. Not sure why this is happening but you can fix it but
adding any line after the saveas statement that would generate a value,
e.g. just a "1" will do:
#+begin_src org
,#+begin_src octave :results file :dir "data/images" :file "figure1.png"
clf ();
surf (peaks);
saveas (1, "figure1.png");
1
,#+end_src
#+end_src
--
Eric S Fraga via Emacs 27.0.50, Org release_9.1.6-341-g3a4fd3
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* Re: Need somebody knows Octave help on ob-octave.el error
2018-03-23 0:09 ` Eric S Fraga
@ 2018-03-23 8:16 ` stardiviner
0 siblings, 0 replies; 3+ messages in thread
From: stardiviner @ 2018-03-23 8:16 UTC (permalink / raw)
To: org-mode
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After check out source code of `ob-octave.el`, I found only one places
used `ans.m`:
```
(defvar org-babel-octave-wrapper-method
"%s
if ischar(ans), fid = fopen('%s', 'w'); fprintf(fid, '%%s\\n', ans);
fclose(fid);
else, dlmwrite('%s', ans, '\\t')
end")
```
Might Octave package versions compatition issue or something elseraised
this error. Based on the error hints, should be the calling to `ans` is
wrong. After tesing upper code in Octave REPL, it works fine. that
weird. The upper variable is just a wrapper around src block `body`for
saving`ans` to file.
Anyway, hope somebody who knows elisp and Octave can check this out.
On 03/23/2018 08:09 AM, Eric S Fraga wrote:
> On Friday, 23 Mar 2018 at 07:55, stardiviner wrote:
>> I got the following error after executing src block:
>>
>> ```
>>
>> error: invalid call to script /usr/share/octave/4.2.2/m/help/ans.m
> I see the same. Not sure why this is happening but you can fix it but
> adding any line after the saveas statement that would generate a value,
> e.g. just a "1" will do:
>
> #+begin_src org
> ,#+begin_src octave :results file :dir "data/images" :file "figure1.png"
> clf ();
> surf (peaks);
> saveas (1, "figure1.png");
> 1
> ,#+end_src
> #+end_src
>
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2018-03-22 23:55 ob-octave.el raise error after execute src block stardiviner
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