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type: initiative slug: m3-data-informed-chart-properties title: M3 data-informed chart properties workstream: graph-library owner: data-viz-designer-engineer status: planned milestone: m3-public-launch

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M3 data-informed chart properties

Objective

Use data-informed rules and assertions to drive chart properties such as spacing, mark sizing, and other defaults based on the shape and semantics of the data.

Deliverables

• [ ] Define which chart properties should become data-informed rather than purely static defaults.
• [ ] Use assertions and chart evidence to drive rules for properties such as spacing and sizing.
• [ ] Separate safe data-informed defaults from behavior that should remain explicit author intent.

Links

• Research
• Spec
• Decisions