v_contract.m

%{
Copyright © 2022 Alexey A. Shcherbakov. All rights reserved.
This file is part of the GratingGSM project.

This 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 2 of the License, or
(at your option) any later version.

This sortware 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.
%}
%%
function W = v_contract(V, nx, ny)
	W = reshape(V(1:ny, 1:nx), [ny*nx, 1]);
end