mixed grid shapes on one figure: (2, 1) top, (2, 2) bottom0246810-1-0.500.51add_subplot(2, 1, 1) -- a (2, 1) grid0246810-1-0.500.51add_subplot(2, 2, 3) -- a (2, 2) grid0246810-0.4-0.200.20.4add_subplot(2, 2, 4) -- a (2, 2) gridmixed grid shapes on one figure: (2, 1) top, (2, 2) bottom