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robo-friends / m-explore-ros2

Explore_lite port to ROS2
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[explore-1] Warning: Invalid frame ID "x" passed to canTransform argument target_frame - frame does not exist #11

Closed Richard-Haes-Ellis closed 2 years ago

Richard-Haes-Ellis commented 2 years ago

For some reason its throwing this waring constantly after launch, my frame "x" does exist as I can produce the tf tree and it shows up. What could cause this?

Another inquiry is the params.yaml file, what exactly do you pass to the costmap topic? On the examples you put: map. As I undestrand map in it self is not a topic, /map is. And /map refrers to a normal map not a costmap.

If you need more info I can gladly forward it.

charlielito commented 2 years ago

For some reason its throwing this waring constantly after launch, my frame "x" does exist as I can produce the tf tree and it shows up. What could cause this?

Can you give more info? Your params file, what packages are you using, the tf tree, etc.

Another inquiry is the params.yaml file, what exactly do you pass to the costmap topic? On the examples you put: map. As I undestrand map in it self is not a topic, /map is. And /map refrers to a normal map not a costmap.

map is a topic with the default namespace being / so at the end the topic will be /map. As in ROS1, this is done this way so you can prepend any namespace to the node in case you have multiple robots in the same network. Typically the maps are of type nav_msgs::msg::OccupancyGrid as well as costmaps. So you can use that for the exploration or the costmap topic of the navigation stack.

charlielito commented 2 years ago

Closing this since the author didn't respond. If in the future he does I'll re open it