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could not get ardrone_navdata #4

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boonflies opened this issue Mar 20, 2015 · 0 comments

boonflies commented Mar 20, 2015

When I try to get the navigation info, while running the simulator, as

The navigation info

rostopic echo /ardrone/navdata

I seem to get the following error in the terminal.

ERROR: Cannot load message class for [ardrone_autonomy/Navdata]. Are your messages built?

I am able to get the sonar height information using,
rostopic echo /sonar_height

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