Ability to add multiple sources (namely time series) to a chart

[vylc]

Currently, the best way to add multiple datasets to the same chart is to use annotations. However, annotation layers don't respond to filters.
The deck.gl Multi-layer model is great, but is only available for geospatial visualizations right now.

If we can do the same thing for line charts, this would be huge

Make sure these boxes are checked before submitting your issue - thank you!

• I have checked the superset logs for python stacktraces and included it here as text if any
• I have reproduced the issue with at least the latest released version of superset
• I have checked the issue tracker for the same issue and I haven't found one similar

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[mistercrunch]

Line chart only ok? That would make this feature a lot easier to build, and insure that most line chart-specific feature are accessible.

[ahsanshah]

Agree this would be killer addition. Right now, we use a variety of Druid datasources at varying grain. To integrate would normally require pre-ingest ETL or post ingest conforming. Annotations that can "layer" on the Superset side would be an awesome way to integrate without ETL or ingestion changes. I would also ask if Annotations would allow for Line/Bar combination overlays or has to map to the specific NVD3 chart? In plotly there is the option of adding traces, would Superset allow something like that possibly?

[mistercrunch]

#4819 added this functionality (for lines only though)