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Is it possible to place some kind of 2D rectangular shape in RViz that is colour coded according to some data value subscribed to and positioned wherever the robot is at the time the data was read?
If so, how might I go about implementing this?
Rviz is only a data visualizer. As such, you cannot "place" a shape in rviz, but if the shape is being published somewhere, you can subscribe to it and visualize it! There are two easy ways to go about your problem:
1. Work with gazebo and place an object wherever you want. You can then visualize in either a camera pointed towards it or using some lidar scan.
2. Generate markers in code and publish them. This tutorial will show you how to. I'd recommend this method since it sounds like you want it based on the robot position and you can just keep changing the marker pose in code.
I believe the markers have a RGB field? You can read your sensor data and using whatever algorithm/idea you have in mind and apply individual markers with relevant RGB values.
Asked: 2021-03-11 01:52:38 -0500
Seen: 610 times
Last updated: Mar 11 '21
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