Re: Octave won't plot 3D graphs anymore.

[marco atzeri]

On 3/15/2013 4:57 AM, Eusebio, Paulo wrote:
> I have GNU Octave version 3.2.4. It used to be able to plot 3D graphs
> but not anymore. Everytime I try to run the following program it keeps
> saying 'invalid use of script in index notation'. What does that mean?
> The following code is thusly:
>
> % mesh.m
> % produces 3-D graph of analytic solution to laplace equation
> clear;
> a = -2; b = 2; N = 100; h=(b-a)/N;
> xx = a:h:b; yy=xx;
> [x,y]=meshgrid(xx,yy);
> z = 1./(1+(x.^2 + 2*x.*y + y.^2));
> figure;
> surf(x,y,z);
> axis([a,b,a,b,0,1]); xlabel("x"); ylabel("t")
>
> How do I fix this problem? Do I have to upgrade or delete certain libraries?

It works fine on my 3.6.2 on cygwin.
we need more info about your system and were exactly is the error ?

Regards
Marco