Re:

[Marco Atzeri]

On 24/10/2015 09:02, Jonathan Camilleri wrote:
> I cannot understand what is wrong with my training code, I am following
> online training at gnu.org
> <http://www.gnu.org/software/octave/doc/interpreter/Simple-Examples.html#Elementary-Calculations>.
>
> Does this mean tutorials need an update or do I need to know anything?

your file:
xdot(1) = r*x(1)*(1 - x(1)/k - a*x(1) * x(2)/(1+b*x(1));

online example:
xdot(1) = r*x(1)*(1 - x(1)/k) - a*x(1)*x(2)/(1 + b*x(1));

as you see one closed parenthesis is missing.

The error message was clear (for me)
-----------------------------------------------------------
> xdot(1) = r*x(1)*(1 - x(1)/k - a*x(1)*x(2)/(1 + b*x(1));
parse error:

  syntax error

>>> xdot(1) = r*x(1)*(1 - x(1)/k - a*x(1)*x(2)/(1 + b*x(1));
                                                           ^
------------------------------------------------------------
There was a parse error due to wrong syntax in that row.
Of course the lack of a parenthesis is only recognized at the end of the 
line....


> Inline images 1

Please avoid, you can use the command  "diary" to save your sessions
http://www.gnu.org/software/octave/doc/interpreter/Diary-and-Echo-Commands.html#Diary-and-Echo-Commands

> Jonathan Camilleri

Regards
Marco