Scilab Function

arma2p - extract polynomial matrices from ar representation

### Sequence d'appel

  `[A,B,D]=arma2p(ar)`

### Parametres

- `A,B,D` : three polynomial matrices
- `ar` : Scilab 'ar' tlist for arma storage (see `armac`).

### Description

this function extract polynomial matrices `(A,B,D)` from an armax description.

### Exemples

    a=[1,-2.851,2.717,-0.865].*.eye(2,2)
    b=[0,1,1,1].*.[1;1];
    d=[1,0.7,0.2].*.eye(2,2);
    sig=eye(2,2);
    ar=armac(a,b,d,2,1,sig)
    // extract polynomial matrices from ar representation
    [A,B,D]=arma2p(ar);

### Voir aussi

`arma` `armax` `armax1` `arsimul` `armac`