Hello,every one,
After I added `` in my launch file,the rviz can not show the tf tree and there was an error in the RobotModel:`No transform from [base_laser]to[odom]` and a warning in Global Status: `No tf data.Actual error:Fixed Frame [odom] does not exist`.
When I entered `rostopic echo /tf` ,there was a warning :`no messages received and simulated time is active.Is /clock being published?`
So the root cause is the clock message not be published.How can I publish the /clock messages ?
Thanks in advance!
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