the tf message cannot be published when I run the google cartographer
I had run the google cartographer's demo successfully.But when I run it on my robot,the tf message can't be published .I echo the tf topic,and it has no reponse.
How is it happened?How can I solve it?Help...... Here is the warning.....
[WARN][1501854142.076802023]:W0804 21:42:22.000000 19868 tf_bridge.cc:51] "horizontal_laser_link" passed to lookupTransform argument target_frame does not exist.
[WARN][1501854142.076802023]:W0804 21:42:22.000000 19868 tf_bridge.cc:51] "horizontal_laser_link" passed to lookupTransform argument target_frame does not exist.
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