Re: cursor control

[Przemek Klosowski]

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.
>
> So, how can I control the position of the cursor?

Several problems here:

- the escape sequence ESC [ val A uses ASCII codes, not binary values, 
so you need to use printf("%s",[0x1B '[2A']);

- 2 is too much---disp() advances one line so you need to go back one, 
not two

- printing advances the cursor both downwards and rightwise; why don't 
you use carriage return on each line:

 for i=1:1000; printf("%d \r", i); endfor