2019-09-11 11:11:10 +02:00
|
|
|
|
function A = isconst(B)
|
|
|
|
|
|
|
|
|
|
% Returns an array of logicals, i-th element is `true` if column i of B is constant, `false` otherwise.
|
2017-05-16 15:10:20 +02:00
|
|
|
|
%
|
2008-09-03 18:05:35 +02:00
|
|
|
|
% INPUTS:
|
2019-09-11 11:11:10 +02:00
|
|
|
|
% - B [double] n×m matrix.
|
2008-09-03 18:05:35 +02:00
|
|
|
|
%
|
|
|
|
|
% OUTPUTS
|
2019-09-11 11:11:10 +02:00
|
|
|
|
% - A [logical] 1×m vector.
|
2008-09-03 18:05:35 +02:00
|
|
|
|
|
2019-09-11 11:11:10 +02:00
|
|
|
|
% Copyright © 2008-2019 Dynare Team
|
2008-09-03 18:05:35 +02:00
|
|
|
|
%
|
|
|
|
|
% This file is part of Dynare.
|
|
|
|
|
%
|
|
|
|
|
% Dynare 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.
|
|
|
|
|
%
|
|
|
|
|
% Dynare 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 Dynare. If not, see <http://www.gnu.org/licenses/>
|
2019-09-11 11:11:10 +02:00
|
|
|
|
|
|
|
|
|
A = false(1, size(B, 2));
|
|
|
|
|
|
|
|
|
|
for i = 1:size(B, 2)
|
|
|
|
|
if all(abs(B(2:end,i)-B(1:end-1,i))<1e-12)
|
|
|
|
|
A(i) = true;
|
|
|
|
|
end
|
2009-12-16 18:17:34 +01:00
|
|
|
|
end
|