do not subscribe if field is empty

ANYbotics / rqt_multiplot_plugin

An rqt plugin for visualizing numeric values in multiple 2D plots.

GNU Lesser General Public License v3.0

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Closed samuelba closed 7 years ago

samuelba commented 8 years ago

Subscribing with an empty field throws a NoSuchMemberException in the first processMessage call from CurveDataSequencer.