Why the topic '/nmea_sentence' is not processed by the node '/nmea_topic_driver'?

[robotstar]

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I perform following operations: $ roslaunch utbm_dataset_play.launch bag:=utbm_robocar_dataset_20180719_noimage.bag $ rostopic echo /nmea_sentence
WARNING: no messages received and simulated time is active. Is /clock being published? $ rqt_graph

It seems like that the topic '/nmea_sentence' is not processed by the node '/nmea_topic_driver'. Why it happens?

[yzrobot]

Hi, to find out the problem, could you pls confirm first:

• roslaunch utbm_dataset_play.launch bag:=/FULL_PATH_TO_YOUR/utbm_robocar_dataset_20180719_noimage.bag
• you did sudo apt install ros-VERSION-nmea-navsat-driver

[robotstar]

Hi, to find out the problem, could you pls confirm first:

• roslaunch utbm_dataset_play.launch bag:=/FULL_PATH_TO_YOUR/utbm_robocar_dataset_20180719_noimage.bag
• you did sudo apt install ros-VERSION-nmea-navsat-driver

Yes, I performed following operations following https://github.com/epan-utbm/utbm_robocar_dataset/tree/baselines/launch. $ sudo apt-get install ros-melodic-velodyne $ sudo apt-get install ros-melodic-nmea-navsat-driver $ sudo apt-get install ros-melodic-gps-common Besides, my Ubuntu version is 18.04.

[robotstar]

Hi, to find out the problem, could you pls confirm first:

• roslaunch utbm_dataset_play.launch bag:=/FULL_PATH_TO_YOUR/utbm_robocar_dataset_20180719_noimage.bag
• you did sudo apt install ros-VERSION-nmea-navsat-driver

And I used absolute path of the bag. The velodyne points can be visualized in the rviz. However, the node '/nmea_topic_driver' did not process the topic '/nmea_sentence'.

[yzrobot]

Your rosbag_play output looks different from mine ....

[robotstar]

Your rosbag_play output looks different from mine ....

Yes. I am confused by my rqt_graph result. Why the topic '/nmea_sentence' disappeared in my rosbag_play?

[robotstar]

Your rosbag_play output looks different from mine ....

Yes. I am confused by my rqt_graph result. Why the topic '/nmea_sentence' disappeared in my rosbag_play?

And the operation $ rostopic echo /nmea_sentence can not output the message in the terminal. Just output: WARNING: no messages received and simulated time is active. Is /clock being published?

[lipascal123]

I got the same issue, any updates on this?