想问一下，我在跑双目事件相机的数据集时，rqt_gui不会出现画面是怎么回事呢？

小卢

ROS节点都是能够打开的，也能够启动rqt_gui，但是确实对rqt_gui不太了解，包也能正常播放，但好像两者之间没有联系起来一样,我也没有更改原作者的代码，按照他的readme操作应该是能够正常运行的，有没有大佬可以给我指点方向一下，我有点没有头绪（不知道怎么上传图片）

小鱼

@小卢使用rostopic echo 话题
看看有没有数据，多半是驱动问题没从相机读取到数据

小卢

@小鱼好的，感谢提醒，我去试一下

小卢

@小卢话题上确实没有数据，请问是要重新安装驱动吗，跑的是港科大的双目立体事件相机(Event Stereo Visual Odometry),之前安装了rpg_dvs_ros,也能够正常播放数据集

小鱼

@小卢你用的是play的数据集吗，话题没数据，数据集可能也没数据。

小卢

@小鱼 play的数据集，您是指什么，launch文件里节点的类型是play，这是我输完命令终端的结果（抱歉，我不太会上传图片），数据集就是事件相机通用数据集吧

终端1：
xiaoheya@xiaoheya-virtual-machine:~/catkin_dvs_ws/src$ roslaunch esvo_time_surface stereo_time_surface.launch
... logging to /home/xiaoheya/.ros/log/e1759816-fb38-11ec-bfb3-000c29d82efc/roslaunch-xiaoheya-virtual-machine-39664.log
Checking log directory for disk usage. This may take a while.
Press Ctrl-C to interrupt
Done checking log file disk usage. Usage is <1GB.

started roslaunch server http://xiaoheya-virtual-machine:38421/

SUMMARY

PARAMETERS

/TimeSurface_left/decay_ms: 30
/TimeSurface_left/ignore_polarity: True
/TimeSurface_left/max_event_queue_len: 20
/TimeSurface_left/median_blur_kernel_size: 1
/TimeSurface_left/time_surface_mode: 0
/TimeSurface_left/use_sim_time: True
/TimeSurface_right/decay_ms: 30
/TimeSurface_right/ignore_polarity: True
/TimeSurface_right/max_event_queue_len: 20
/TimeSurface_right/median_blur_kernel_size: 1
/TimeSurface_right/time_surface_mode: 0
/TimeSurface_right/use_sim_time: True
/rosdistro: melodic
/rosversion: 1.14.13
/use_sim_time: True

NODES
/
TimeSurface_left (esvo_time_surface/esvo_time_surface)
TimeSurface_right (esvo_time_surface/esvo_time_surface)
global_timer (rostopic/rostopic)
rqt_gui (rqt_gui/rqt_gui)

auto-starting new master
process[master]: started with pid [39681]
ROS_MASTER_URI=http://localhost:11311

setting /run_id to e1759816-fb38-11ec-bfb3-000c29d82efc
process[rosout-1]: started with pid [39701]
started core service [/rosout]
process[TimeSurface_left-2]: started with pid [39705]
process[TimeSurface_right-3]: started with pid [39716]
process[global_timer-4]: started with pid [39727]
process[rqt_gui-5]: started with pid [39728]

终端2：
xiaoheya@xiaoheya-virtual-machine:~/catkin_dvs_ws/src$ roslaunch esvo_time_surface upenn_indoor_flying1.launch
... logging to /home/xiaoheya/.ros/log/e1759816-fb38-11ec-bfb3-000c29d82efc/roslaunch-xiaoheya-virtual-machine-45464.log
Checking log directory for disk usage. This may take a while.
Press Ctrl-C to interrupt
Done checking log file disk usage. Usage is <1GB.

started roslaunch server http://xiaoheya-virtual-machine:40481/

SUMMARY

PARAMETERS

/rosdistro: melodic
/rosversion: 1.14.13
/use_sim_time: True

NODES
/
play (rosbag/play)

ROS_MASTER_URI=http://localhost:11311

process[play-1]: started with pid [45488]
[ INFO] [1656899047.246765188]: Opening /home/xiaoheya/dataset/ESVO/indoor_flying1_edited.bag

Waiting 0.2 seconds after advertising topics... done.

Hit space to toggle paused, or 's' to step.
[RUNNING] Bag Time: 1608224755.504007 Duration: 81.699363 / 81.703556
Done.
REQUIRED process [play-1] has died!
process has finished cleanly
log file: /home/xiaoheya/.ros/log/e1759816-fb38-11ec-bfb3-000c29d82efc/play-1*.log
Initiating shutdown!

[play-1] killing on exit
shutting down processing monitor...
... shutting down processing monitor complete
done

终端3：
xiaoheya@xiaoheya-virtual-machine:~/catkin_dvs_ws/src$ $ rostopic echo /davis/left/image_raw
WARNING: topic [/T/davis/left/image_raw] does not appear to be published yet

小鱼

@小卢你有真的相机吗

小卢

@小鱼没有，我是用数据集跑的

小鱼

@小卢那就不存在驱动问题，就是数据集问题了

小卢

@小鱼哦哦，好，我去看看数据集，谢谢您