Question 1

How do I connect Webviz to a live robot?

Accepted Answer

Use the rosbridge_server to stream data in real-time. The hosted version at webviz.io/app can connect directly, or set up a static build for local network deployments as described in the README.

Question 2

Webviz vs Foxglove: which is better for ROS visualization?

Accepted Answer

Webviz is open-source with modular libraries, but Foxglove might have more features or better support. The README suggests checking Foxglove if Webviz doesn't meet your needs, as they have similar purposes but different feature sets.

Question 3

How to record a video from Webviz playback?

Accepted Answer

Use the provided script with FFmpeg installed. Run record-local-bag-video.js with parameters for bag, layout, and output file, as detailed in the 'Recording videos' section of the README.

Question 4

Can Webviz handle large ROS bag files efficiently?

Accepted Answer

Performance can vary; use the built-in measurement scripts to optimize for specific layouts. For very large files, consider cloud streaming options or ensure adequate local resources.

Question 5

How to deploy Webviz on my own server for offline use?

Accepted Answer

Build a static version using Docker (e.g., 'docker run -p 8080:8080 cruise/webviz') or manually via npm commands, then serve it locally, as outlined in the static deployment instructions.

Question 6

What custom panels can I add to Webviz?

Accepted Answer

You can use modular libraries like regl-worldview to build custom visualizations. The README encourages proposing generic features, but for advanced customizations, forking or integrating libraries is required.

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