I am running ar_track_alvar successfully, but it causes tf transform nodes to output errors such as:
TF_NAN_INPUT: Ignoring transform for child_frame_id "ar_marker_111"
I'm pretty sure the errors are irrelevant, as I am detecting all of the expected markers fine and getting good transforms from them. However, these errors make a mess of the terminal screen of other nodes. Is there a way to either suppress the errors or (better) to get ar_track_alvar to only send out valid transforms?
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