SeekerOfRos's profile - activity

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2016-02-01 02:53:39 -0500	commented answer	Trying to understand gmapping and playback some bag What if I do not have that?
2016-01-29 15:05:23 -0500	asked a question	Trying to understand gmapping and playback some bag Hi all, I have a bag with scanner data. I am not trying to build a map. THe scanner is in /scan. So I ran rosparam set use_sim_time true roscore rosrun gmapping slam_gmapping scan rosrun tf static_transform_publisher 0 0 0 0 0 0 base_link laser 100 Nothing seems to be published in /map. In rviz, I see for map... transform:No transform from [] to [laser] What am I missing? From the doc, I can see base_link → odom is needed.. How? Why is that needed? Is not the purpose of slam to determine just that? (the base_link relative to odom)?