When I done SP simulation, there should be 'main plot' in the 'direct plot'. But now there is no 'main plot' in the 'direct plot', why. The sp simulation is compete. ' A& ]" W; _ A2 h1 _( d % E7 r! a' w0 }" d( Z* h ^5 dThe right figure should be like the bellowing figure:- T$ \' j8 X5 C6 D