60 lines
1.8 KiB
Matlab
60 lines
1.8 KiB
Matlab
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function v = substitute(v, i, x)
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% Substitute a scalar in a vector.
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%
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% INPUTS
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% - v [double] m×1 vector
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% - i [integer] scalar, index for the scalar to be replaced
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% - x [double] scalar or 1×n vector.
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%
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% OUTPUTS
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% - v [double] m×1 vector or m×n matrix (with substituted value(s))
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%
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% REMARKS
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% If x is a vector with n elements, then n substitutions are performed (returning n updated vectors in a matrix with n columns)
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%
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% EXAMPLES
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% >> v = ones(2,1);
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% >> substitude(v, 1, 0)
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%
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% ans = %
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%
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% 0
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%
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% 1
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%
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% >> substitute(v, 1, [3 4])
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%
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% ans =
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%
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% 3 4
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% 1 1
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% Copyright © 2023 Dynare Team
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%
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% This file is part of Dynare.
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%
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% Dynare is free software: you can redistribute it and/or modify
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% it under the terms of the GNU General Public License as published by
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% the Free Software Foundation, either version 3 of the License, or
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% (at your option) any later version.
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%
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% Dynare is distributed in the hope that it will be useful,
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% but WITHOUT ANY WARRANTY; without even the implied warranty of
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% MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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% GNU General Public License for more details.
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%
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% You should have received a copy of the GNU General Public License
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% along with Dynare. If not, see <https://www.gnu.org/licenses/>.
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assert(isvector(v), 'First input argument must be a vector.')
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assert(isvector(x), 'Last input argument must be a scalar or a vector.')
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assert(isscalar(i) && isint(i) && i>0 && i<=length(v), 'Second input argument must be a scalar integer')
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if length(x)==1
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v(i) = x;
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else
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v = repmat(v, 1, length(x));
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v(i,:) = x;
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end
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