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RQT graph line colour

asked 2014-12-13 18:08:24 -0500

ghost gravatar image

Hi there. Im running the rqt graph you know there is lot of line, and when you move the mouse at the line, there will be colour on the line like red, green, orange,blue and others. So what are the meaning for each colour on the rqt graph? regards.

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answered 2014-12-14 03:08:29 -0500

ahendrix gravatar image

Each line represents a single field (from a topic) which is plotted over time.

The color of the line indicates which value it represents; the legend on the graph tells you which field in the topic is represented by each color.

If you're still having trouble, maybe you can edit you question to include a screenshot, and I can explain by example.

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answered 2022-05-22 22:03:49 -0500

qilin_gundamenjoyer gravatar image

In ROS the color represents either a publisher, topic, or a subscriber. Blue represents a Publisher, Red represents a Topic, and Green represents a Subscriber. Publisher and Subscriber are nodes that are depicted as oval with text wrapped within it. Topics are represented as lines/edges that are stream of messages that connects a publisher and a subscriber, which allows communication, receive inputs and outputs.

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Asked: 2014-12-13 18:08:24 -0500

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Last updated: Dec 14 '14