Build a useful investigation brief
Freeze the value fixture
Record the filtered rows, aggregated values, units, expected domain, zero policy, scale type, and intended comparison. Include values close together and one far value. Preserve the chart revision and filter state so the same data is rendered during each comparison.
Rebuild the visual path
Capture aggregate output, domain minimum and maximum, scale mapping, tick values, label text, mark positions, and tooltip formatting. Compare raw differences with visual distances. Identify the first stage that clips, transforms, rounds, or relabels a value in a way the chart does not explain.
Test a single axis change
Rerun the same fixture with one domain, scale, tick, or unit choice changed. Compare reader conclusions across chart, table, card, and export. Treat a dispute over zero or log treatment as a policy hypothesis until the chart and metric owners confirm the intended analytical use.
What to carry forward
The investigation is ready when the brief names the value fixture, first axis divergence, affected comparison, strongest evidence, and tested alternative. Recommend a scoped scale or labeling correction. Keep the case open when units or analytical purpose remain unowned.
Technical background: Metabase documentation.
Keep the decision with the work.
Use a Work Item in Aglet to record the problem, the evidence you have, and the next decision. Add an owner and priority, then keep updates in the discussion so the next person can follow the reasoning.
Create an account See the product workflow