roscore

track_space/: 
source ./devel/setup.bash
rosrun trajectory demo_node /home/server/桌面/virtualEnv_yzh/virtual_pji/track_space/bag/example1.bag /home/server/桌面/virtualEnv_yzh/virtual_pji/track_space/bag/example2.bag /home/server/桌面/virtualEnv_yzh/virtual_pji/track_space/bag/example.png