Hi Paul Thanks for the prompt response!! Here's the output which looks identical to yours. > noa.names (cw at graph) [1] "type" "lfc" "label" "count" > noa (cw at graph, 'lfc') A B C -3 0 3 -burak On Mar 17, 2012, at 11:02 AM, Paul Shannon wrote: > noa.names (cw at graph) > noa (cw at graph, 'lfc')