Added new routine to insert column vector in a matrix.

matlab/insert_column_vector_in_a_matrix.m

+function matrix = insert_column_vector_in_a_matrix(matrix, vector, i)
+
+% Copyright (C) 2013 Dynare Team
+%
+% 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/>.
+
+if nargin<2
+    error('insert_column_vector_in_a_matrix: I need at least two input arguments!')
+end
+
+if ~isequal(ndims(matrix),2)
+    error(['insert_column_vector_in_a_matrix: First input ''' inputname(1) ''' must be a matrix!'])
+end
+
+[n,m] = size(matrix);
+
+if nargin<3
+    i = m+1;
+end
+
+if ~isvector(vector) || ~isequal(numel(vector),size(vector,1)) || ~isequal(numel(vector),n)
+    error(['insert_column_vector_in_a_matrix: Second input argument ''' inputname(2) ''' must be a ' int2str(n) ' by 1 vector!'])
+end
+
+switch i
+  case m+1
+    matrix = [matrix, vector];
+  case 1
+    matrix = [vector, matrix];
+  otherwise
+    matrix = [matrix(:,1:i-1), vector, matrix(:,i:m)];
+end
+
+%@test:1
+%$ % Define a datasets.
+%$ A = rand(8,3); b = rand(8,1);
+%$
+%$ try
+%$   A4 = insert_column_vector_in_a_matrix(A, b);
+%$   A1 = insert_column_vector_in_a_matrix(A, b, 1);
+%$   A2 = insert_column_vector_in_a_matrix(A, b, 2);
+%$   t(1) = 1;
+%$ catch
+%$   t(1) = 0;
+%$ end
+%$ 
+%$ if t(1)
+%$   t(2) = dyn_assert(A4,[A,b],1e-15);
+%$   t(3) = dyn_assert(A1,[b,A],1e-15);
+%$   t(4) = dyn_assert(A2,[A(:,1), b, A(:,2:end)],1e-15);
+%$ end
+%$ T = all(t);
+%@eof:1
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