Error with rostopic echo /line_segments about laser_line_extraction HOT 3 CLOSED

Update: I managed to get the content of the topic with rostopic echo. I was not sourcing the environment in my current terminal (not proud for that). But rqt_graph still does not show the topic /line_segments. Any hint for that???

from laser_line_extraction.

Update: I managed to get the content of the topic with rostopic echo. I was not sourcing the environment in my current terminal (not proud for that). But rqt_graph still does not show the topic /line_segments. Any hint for that???

Note that rqt_graph only shows topics that are being subscribed to? Is something subscribed to /line_segments? Note that rviz subscribes to /line_markers, not /line_segments.

from laser_line_extraction.

Update: I managed to get the content of the topic with rostopic echo. I was not sourcing the environment in my current terminal (not proud for that). But rqt_graph still does not show the topic /line_segments. Any hint for that???

Note that rqt_graph only shows topics that are being subscribed to? Is something subscribed to /line_segments? Note that rviz subscribes to /line_markers, not /line_segments.

I wasn't aware that rqt_graph shows only subscribed topics. I don't have any subscriber there yet, so it makes sense. My bad. Thanks a lot!

from laser_line_extraction.