ShowDemands - Shows the demands of a net using Metanet or Scigraph
ShowDemands shows the demands of NetList that their volume is between dmin and dmax. All the demands are shown if nothing is indicated)
%net=TrafficExample('Steenbrink'); ShowDemands() // Shows the net ShowDemands('all','between',100,200) ShowDemands('used','between',100,200) // Shows the net with the demands between 100 and 200, // and the used nodes. ShowDemands('used',[1 3 8 12],100,200) // Shows the given demands with values between 100 and 200