Quatters opened a new pull request, #33716: URL: https://github.com/apache/superset/pull/33716
### SUMMARY This PR introduces a new "Timeline Chart" visualization plugin to Apache Superset, built using Apache ECharts. This chart addresses the current lack of timeline-based visualizations, enabling users to effectively analyze event sequences and durations across a horizontal time axis. Key features include: * Representation of event durations as horizontal bars on a continuous time axis. * Support for category-based vertical grouping with nested subcategories, facilitating detailed analysis within larger contexts. * Functionality for fixed left/right time boundaries to compare intervals. * Native ECharts zoom and scroll support for interactive data exploration. The expected input data format includes `start_time` and `end_time`, a main category for the Y-axis, and an optional dimension for subcategories. Additional fields are supported for tooltips, enhancing data context upon interaction. ### BEFORE/AFTER SCREENSHOTS OR ANIMATED GIF <!--- Skip this if not applicable -->  ### TESTING INSTRUCTIONS <!--- Required! What steps can be taken to manually verify the changes? --> Import demo: [Chart Export Jun 07 2025.zip](https://github.com/user-attachments/files/20637889/Chart.Export.Jun.07.2025.zip) It uses dataset of *examples* database. [data.csv](https://github.com/user-attachments/files/20637898/data.csv) ### ADDITIONAL INFORMATION <!--- Check any relevant boxes with "x" --> <!--- HINT: Include "Fixes #nnn" if you are fixing an existing issue --> - [x] Has associated issue: Closes #33349 - [ ] Required feature flags: - [x] Changes UI - [ ] Includes DB Migration (follow approval process in [SIP-59](https://github.com/apache/superset/issues/13351)) - [ ] Migration is atomic, supports rollback & is backwards-compatible - [ ] Confirm DB migration upgrade and downgrade tested - [ ] Runtime estimates and downtime expectations provided - [x] Introduces new feature or API - [ ] Removes existing feature or API -- This is an automated message from the Apache Git Service. To respond to the message, please log on to GitHub and use the URL above to go to the specific comment. To unsubscribe, e-mail: [email protected] For queries about this service, please contact Infrastructure at: [email protected] --------------------------------------------------------------------- To unsubscribe, e-mail: [email protected] For additional commands, e-mail: [email protected]
