Errata: Re: How to plot the sum of two vectors

[Nano Taboada]

Update/errata:

     I've installed the gnuplot package (curiously enough it's not 
available with my distro's default installation), so now I'm having an 
Argand diagram but still without the vectors drawn:

http://allyoucanupload.webshots.com/v/2003237768730978056

     Thanks much in advance,

Nano Taboada wrote:
> Hello everybody,
> 
>      I'm totally new to Octave and with the help of some online docs I 
> was trying to plot the following:
> 
> octave:1> clear
> octave:2> z1 = 2+i;
> octave:3> z2 = 1+i;
> octave:4> z3 = z1+z2;
> octave:5> plot(z3)
> 
>      but received these error messages:
> 
> sh: gnuplot: not found
> warning: broken pipe -- some output may be lost
> sh: gnuplot: not found
> error: Version numbers must be a single row
> error: evaluating if command near line 73, column 3
> error: called from `compare_versions' in file 
> `/usr/share/octave/2.9.12/m/miscellaneous/compare_versions.m'
> error: evaluating static command near line 35, column 5
> error: evaluating if command near line 29, column 3
> error: called from `__go_draw_axes__' in file 
> `/usr/share/octave/2.9.12/m/plot/__go_draw_axes__.m'
> error: evaluating switch command near line 57, column 4
> error: evaluating for command near line 55, column 2
> error: evaluating if command near line 37, column 7
> error: evaluating if command near line 30, column 5
> error: evaluating if command near line 29, column 3
> error: called from `__go_draw_figure__' in file 
> `/usr/share/octave/2.9.12/m/plot/__go_draw_figure__.m'
> error: evaluating if command near line 61, column 6
> error: evaluating if command near line 58, column 4
> error: evaluating if command near line 56, column 2
> error: evaluating for command near line 55, column 7
> error: evaluating if command near line 38, column 5
> error: called from `drawnow' in file 
> `/usr/share/octave/2.9.12/m/plot/drawnow.m'
> 
> 
>      I'd really appreciate if someone could help me out, thanks much in 
> advance!
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