function yes = ispartition (x,xc)

% ISPARTITION checks if a cell array is a partition of a vector's values
% yes = ispartition (x,xc)
% x is a vector 
% xc is a cell array
% yes is binary, equals 1 if xc is a partition of unique(x)

if (size(x,1)==1),x=x';end

yes = 0;
xcall = [];
for i=1:length(xc)
  if (size(xc{i},1)==1),xc{i}=xc{i}';end
  if length(intersect(xcall,xc{i}))           % if xc{i} has any overlap with xc{1:i-1}
    return;
  else
    xcall = vertcat(xcall,xc{i});
  end
end

a = sort(unique(x));
b = sort(xcall);

if (length(a) == length(b))
  if (max(abs(a-b))==0)
    yes = 1;
  end
end