Represent missing report observations distinctly from zero
Missing intervals are graphed at zero and alter the apparent trend. Define equivalent chart and table representations.
- Focused work estimate
- 1h 45m + prerequisites
- Priority in the scenario
- Medium
- Engineering practice
- Data integrity · Visualization
Estimated field mix
- Frontend60%
- Data engineering20%
- Accessibility20%
Field percentages are editorial estimates of the ticket's engineering focus. They total 100%; they are not measured time, proficiency scores, or ownership evidence.
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Project context
Fictional cooperative Quarry reviews synthetic service-volume reports. Build local report fixtures with empty, missing and delayed values.
Setup prerequisites
- Create synthetic report series with explicit missing values.
- Stub report loading, sorting and export responses.
Preceding work
Complete these dependencies, or supply their agreed outputs before taking this ticket.
Acceptance criteria
- Zero remains numeric
- Missing values have explicit text
- Chart gaps match table omissions
Implementation constraints
- Do not impute values within this ticket.
Verification to include
- Compare zero and missing rows
- Use all-missing series
Deliverables
- Missing-value contract and cases
Rollout and recovery
Disable chart interpolation if gaps are misrepresented.
Value of the work
For the engineer: Practice semantic data presentation and robust interaction.
For the team: Inspect whether reporting decisions remain possible without color or pointer use.
Evidence boundaries
Outcome Evidence: Tests, patches, and runbooks are requested deliverables. They become Outcome Evidence only through a qualified Mission and immutable Evidence IDs.
Ownership Evidence: Independent adaptation must be observed under a declared verification policy and cite immutable Evidence IDs. Completing a planning ticket establishes no Ownership Evidence.