samer@0: function u=construct(s,sizes_in)
samer@0: 	figure(fig(s));
samer@0: 
samer@0: 	xl=s.opts.xlim;
samer@0: 	yl=s.opts.ylim;
samer@0: 	X=zeros(sizes_in{1}); 
samer@0: 
samer@0: 	if isempty(xl) && isempty(yl)
samer@0: 		h=image(X,s.opts.args{:});
samer@0: 	else
samer@0: 		if isempty(xl) xl=[1,size(X,2)]; end
samer@0: 		if isempty(yl) yl=[1,size(X,1)]; end
samer@0: 		h=image(xl,yl,X,s.opts.args{:});
samer@0: 	end
samer@0: 	if isfield(s.opts,'ylabel'), ylabel(s.opts.ylabel); end
samer@0: 	if isfield(s.opts,'xlabel'), xlabel(s.opts.xlabel); end
samer@0: 
samer@0: 	u=mkunit(s);
samer@0: 	if autoflush(s), u.process =@proc_flush;
samer@0: 	else u.process=@proc_noflush; end
samer@0: 
samer@0: 	u.sizes_out = {};
samer@0: 	u.dispose = @()delete(h);
samer@0: 
samer@0: 	function proc_flush(x), set(h,'CData',x); drawnow; end
samer@0: 	function proc_noflush(x), set(h,'CData',x); end
samer@0: end