function c = wv_vec(v)
% WV_VEC  Wrap a vector so that jsonencode always produces an array.
%
% jsonencode(5) is 5 and jsonencode([5]) is also 5, so a per-method quantity
% arrives on the JavaScript side as a bare number whenever a lab happens to
% show one method.  A cell array of scalars always encodes as an array.
c = num2cell(v(:)');
end