Re: Seeking help in Octave C++ API

Hi Sir,
Sorry for my mistake. As I am new in this platform so I am unable to adopt
the etiquette so quickly but I will learn this definitely.
As I followed your instructions and wrote a demo code in C++. I am
attaching the code below for your reference :

#include <octave/oct.h>
#include <octave/octave.h>
#include <octave/parse.h>
#include <octave/interpreter.h>
#include <octave/toplev.h>
#include <octave/builtin-defun-decls.h>
#include <iostream>

int main() {
    string_vector argv (2);
    argv(0) = "embedded";
    argv(1) = "-q"; // quiet
    octave_main (2, argv.c_str_vec (), true);
    octave_value_list ov;
    ov(0) = "load";
    ov(1) = "image";
    interp.feval("pkg",ov,0);
    octave_value_list in;
    for (octave_idx_type i = 0; i < 2; i++)
        in(i) = octave_value (5 * (i + 2));
    octave_value_list out;
    out = interp.feval("imregionalmax",ov,0);    // as I want to use
imregionalmax
    return 0;
}
I run this code in ubuntu 18.04 terminal by command : "*mkoctfile
--link-stand-alone file_nape.cpp -o file_name*" but I got this error :

[image: image.png]
Please help me in this to execute.

with regards,
*Siddhartha Roy*
*Associate Software Engineer*
*Vehere Interactive Pvt. Ltd.*


On Mon, Apr 5, 2021 at 7:35 PM Carlo De Falco <[email protected]>
wrote:

>
>
> > Il giorno 5 apr 2021, alle ore 12:11, Siddhartha Roy <
> [email protected]> ha scritto:
> >
> > I have installed image package but I don't know how to load the package
> while using C++. I mean I know how to load it in octave (by running "pkg
> load image") but I don't know how to load it while using C++.
>
> You are going over the same point again and again!
> Once you embed the interpreter, you can run any octave language code from
> your C++ program using the "feval" method ...
>
> so, if at the Octave prompt you would write
>
>   pkg ("load", "image")
>
> in C++ you would do something like
>
>   octave_value_list ov;
>   ov(0) = "load";
>   ov(1) = "image";
>   interp.feval ("pkg", ov, 0);
>
> Please stop writing to the maintainers list, as I said the help list is
> better suited for this topic.
> It would also be nice if you would try to adapt to the etiquette of the
> Octave lists and stop top posting.
>
> c.
>
>