Re: cursor control

[Jose]

On 04/16/2013 05:58 PM, Przemek Klosowski wrote:
> On 04/16/2013 08:20 AM, Jose wrote:
> > I need to control the position of the cursor in the terminal within one
> > script. I have tried VT100 control commands, but either they do not work
> > as expected or I am doing something wrong. For example:
> >
> > octave:8> for n=1:10
> >   >   disp(a);
> >   >   printf("%s",[0x1B '[' 2 'A']);
> >   > endfor
> >      1   2
> >      1   2
> >      1   2
> ....
> > The previous code should have displayed the matrix a on top of itself
> > all the time.
>
> Several problems here:
>
> - the escape sequence ESC [ val A uses ASCII codes, not binary values,
> so you need to use printf("%s",[0x1B '[2A']);

Spot on, this was the main problem.

I forgot to mention in my previous mail that 'a' is a matrix, and that 
is why I wanted to use disp instead of printf.

So a working script example, for future reference:
-----------------
a=[1 2;3 4];

for n=1:10
  disp(a++);
  printf("%s",[0x1B '[' sprintf("%i",rows(a)) 'A']);
  fflush(stdout);
  sleep(0.5);
endfor
printf("%s",[0x1B '[' sprintf("%i",rows(a)) 'B']);
------------------

Thanks, Przemek.

J