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author | schloegl |
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date | Thu, 02 Apr 2015 10:00:34 +0000 |
parents | 18ff3d258eea |
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function [A] = poly2ar(A); % Converts AR polymials into autoregressive parameters. % Multiple polynomials can be converted. % % function [AR] = poly2ar(A); % % INPUT: % A AR polynomial, each row represents one polynomial % % OUTPUT % AR autoregressive model parameter % % see also ACOVF ACORF DURLEV RC2AR AR2POLY % $Id$ % Copyright (C) 1998-2002,2008 by Alois Schloegl <alois.schloegl@gmail.com> % % This program is free software: you can redistribute it and/or modify % it under the terms of the GNU General Public License as published by % the Free Software Foundation, either version 3 of the License, or % (at your option) any later version. % % This program is distributed in the hope that it will be useful, % but WITHOUT ANY WARRANTY; without even the implied warranty of % MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the % GNU General Public License for more details. % % You should have received a copy of the GNU General Public License % along with this program. If not, see <http://www.gnu.org/licenses/>. % Inititialization [lr,lc]=size(A); if ~all(A(:,1)==1) fprintf(2,'Warning POLY2AR: input argument might not be an AR-polynom'); end; A = -A(:,2:size(A,2))./A(:,ones(1,size(A,2)-1));