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Posted to notifications@superset.apache.org by "jarvis492 (via GitHub)" <gi...@apache.org> on 2026/10/25 17:56:19 UTC
[I] [SIP] Your Title Here (do not add SIP number) [superset]
jarvis492 opened a new issue, #45717:
URL: https://github.com/apache/superset/issues/45717
## [SIP] Proposal for dynamically selecting max values for gauge and bullet charts
Note: This issue is part of the 2026-2027 batch of approved UTSC issues and is already being worked on!
### Motivation
Currently superset offers min/max fields for gauge charts and marker/range fields for bullet charts, allowing users to set targets that they can compare their data against. Currently these fields only accept static values, however, users may want dynamic targets that come from the data itself and update automatically as the data changes.
Discussions https://github.com/apache/superset/discussions/28647 and https://github.com/apache/superset/discussions/30170 ask for this but was never implemented.
### Proposed Change
This feature would add new optional metric inputs in the data tab for both gauge and bullet charts. The existing static value inputs should still be present. Users can interact with these in the same manner as the main metric input (user can choose saved metric, simple aggregate or custom SQL), but they would instead provide targets/markers or max/mins for the chart, hereby referred to as bounds. A metric that returns no usable number (eg. NULL) is ignored.
For bullet chart:
- **Target from metric**: a single metric, computed per row (i.e. per Group by value) in the same query as the main metric. Each row gets its own target tick. The target also appears in the legend and in the bar tooltip, and the axis extends to include it.
<img width="844" height="293" alt="Image" src="https://github.com/user-attachments/assets/6c02d9c9-2d13-4216-aa58-5604aac41d62" />
- **Marker lines from metric**: one or more metrics, computed over the entire dataset (not split by Group by) and drawn as a line across the whole chart. They are added alongside any typed marker lines rather than replacing them, and each is labelled with its metric name. They run in a single extra ungrouped query.
<img width="1572" height="627" alt="Image" src="https://github.com/user-attachments/assets/ccd5eb74-ab5d-4f8d-b6b3-5259af12538f" />
- **Ranges as % of target** (checkbox, shows only if a target metric is set) reads the “Ranges” field as a percentage of each row's target, so the shaded range bands scale with each row’s target.
<img width="1417" height="673" alt="Image" src="https://github.com/user-attachments/assets/81f7515a-d406-4522-9816-3a17781ef08a" />
For gauge chart:
- **Min from metric** would be the min value of the gauge. When dimension is chosen, the min value across all groups wins.
- **Max from metric** would be the max value of the gauge. When dimension is chosen, the max value across all groups wins.
<img width="1312" height="653" alt="Image" src="https://github.com/user-attachments/assets/c42cec2a-11e0-42c4-8902-36aab1eef79e" />
- **Interval bounds as percentages** (checkbox) reads the existing *Interval bounds* field as percentages of the axis, so the coloured intervals follow a dynamic max instead of being stuck at fixed numbers.
<img width="1355" height="686" alt="Image" src="https://github.com/user-attachments/assets/e02da28f-4b51-49fa-8718-9ed6d6ef2bbd" />
### New or Changed Public Interfaces
No changes to the model, REST endpoints, CLI or deployment.
New optional chart form-data keys:
- Gauge: min_metric, max_metric, intervals_relative
- Bullet: target_metric, marker_line_metrics, ranges_relative
The new UI changes mentioned above in the proposed changes section
### New dependencies
None.
### Migration Plan and Compatibility
- **No database migration**: New keys are optional and default to empty.
- **Backwards compatibility**: Changes are non-breaking for old charts. Without the new keys, the charts build the same queries and render the same way as today. Their cache keys don't change, and the existing gauge/bullet unit tests pass unmodified.
### Rejected Alternatives
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Re: [I] [SIP-236] Proposal for dynamically selecting max values for gauge and bullet charts [superset]
Posted by "lilyxm (via GitHub) via notifications" <no...@superset.apache.org>.
lilyxm commented on issue #45717:
URL: https://github.com/apache/superset/issues/45717#issuecomment-6808108956
@dosu would the approach outlined here work for the issue we are trying to solve? Any holes or gaps that you are noticing? Any other feedback is welcome as well!
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Re: [I] [SIP-236] Proposal for dynamically selecting max values for gauge and bullet charts [superset]
Posted by "jarvis492 (via GitHub)" <gi...@apache.org>.
jarvis492 commented on issue #45717:
URL: https://github.com/apache/superset/issues/45717#issuecomment-6476994686
@dosu would the approach outlined here work for the issue we are trying to solve? Any holes or gaps that you are noticing? Any other feedback is welcome as well.
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Re: [I] [SIP-236] Proposal for dynamically selecting max values for gauge and bullet charts [superset]
Posted by "jarvis492 (via GitHub) via notifications" <no...@superset.apache.org>.
jarvis492 commented on issue #45717:
URL: https://github.com/apache/superset/issues/45717#issuecomment-6835899527
@dosu would the approach outlined here work for the issue we are trying to solve? Any holes or gaps that you are noticing? Any other feedback is welcome as well.
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Re: [I] [SIP-236] Proposal for dynamically selecting max values for gauge and bullet charts [superset]
Posted by "dosubot[bot] (via GitHub)" <gi...@apache.org>.
dosubot[bot] commented on issue #45717:
URL: https://github.com/apache/superset/issues/45717#issuecomment-6476997960
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Re: [I] [SIP-236] Proposal for dynamically selecting max values for gauge and bullet charts [superset]
Posted by "dosubot[bot] (via GitHub) via notifications" <no...@superset.apache.org>.
dosubot[bot] commented on issue #45717:
URL: https://github.com/apache/superset/issues/45717#issuecomment-6835903273
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