Hello
I think this is due to the Matlab convention, as filter syntax is the same in
Scilab.
S.
> Le 25 oct. 2019 à 23:25, Federico Miyara a écrit :
>
>
> Dear all,
>
> I'm somewhat puzzled by what appears to be an inconsistency in polynomial
> coefficient order.
>
> Consider the polynomial
>
> A = 1 + 2*x + 3*x^2;
>
> If I want to create it using poly I must write
>
> A = poly([1 2 3], 'x', 'coeff');
>
> But if I want to use it as the denominator of a filter (whose numerator we
> can call B) I must write
>
> y = filter(B, [3 2 1], x);
>
> Is there a reason for this?
>
> Regards,
>
> Federico Miyara
>
> Libre de virus. www.avast.com
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