Visualize height of UAV (both esitamted state and ground truth) in rviz#83

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tongtybj wants to merge 2 commits intostart-jsk:masterfrom tongtybj:height_visualization

+145-14

Commits on Jun 16, 2016

Visualize height of UAV (both esitamted state and ground truth) in rviz and modify the config of rviz about task1 and task3
tongtybj
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Add type assigment in relay_field.py
tongtybj
committed