% transforms a tensor with at least one single-plane dimension into a
% matrix

function a = tten2mat(t)

if isempty(t),
  a = [];
else
  % find the single-plane dimension
  tdim = tdimensions(t);
  [m,d] = min(tdim);
  if m ~= 1,
    error('the order of t is 3: cannot convert to a matrix')
  end

  % remove the tensor information
  a = t(:,(1:size(t,2)-1));

  % 'i' matrices are stored as row vectors
  if d == 1,
    a = reshape(a,tdim(2),tdim(3));
  end
end