function r = gt(p,q)
%overloaded gcmfaces gt function :
%  simply calls double gt function for each face data
%  if any of the two arguments is a gcmfaces object

if isa(p,'gcmfaces'); r=p; else; r=q; end; 
for iFace=1:r.nFaces;
   iF=num2str(iFace); 
   if isa(p,'gcmfaces')&isa(q,'gcmfaces'); 
       eval(['r.f' iF '=p.f' iF '>q.f' iF ';']); 
   elseif isa(p,'gcmfaces')&isa(q,'double');
       eval(['r.f' iF '=p.f' iF '>q;']);
   elseif isa(p,'double')&isa(q,'gcmfaces');
       eval(['r.f' iF '=p>q.f' iF ';']);
   else;
      error('gcmfaces gt: types are incompatible')
   end;
end;