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
