Re: message "error" 'n' undefine near ...

[Markus Mützel]

On 24 Feb 2019 11:13:57 "Robert Setif" wrote:
> 
>    Good morning!
Je ne comprend pas pourquoi vous posez les mêmes questions autre y autre fois. 
Même si on vous a répondu plusieurs fois, vous continuez à ignorer les réponses 
constantement...
That's all my rusty French will do. Please, see the answers *again* below in 
English.

> Mon fichier joint (file joigned) a des probl?mes.
> Quand on le lance, il annonce une erreur ("undefined n").
> Mais dfac(10) -> 3840 ok!.
> 1. Comment corriger cette erreur "undefined n" ?

Your function "dfac" has one input argument "n". You probably see this error 
because you called the function without input argument. I haven't tried but 
something like "dfac(5)" should not throw this error.

> 2. Comment vectoriser dfac: dfac([0:12]) -> nothing !

Each line of your function must accept "n" as a vector for this to work.
E.g. instead of writing:
if (n==0)
  r=1;
endif

you would write:
r = zeros (size (n)); % initialize r to the same size as n
r(n==0) = 1; % only set those elements in "r" that correspond to n==0

And appropriately for the other conditional branches.


> Thank you very much and best regards.
> address@hidden