Vega-Lite Authoring

Guide for authoring and debugging Vega-Lite specifications.

Use when

• The task is general Vega-Lite authoring, chart design, encoding choice, transform design, or multi-view composition.
• You need params, selections, conditional encodings, or invalid-data handling in a Vega-Lite-first chart.
• The chart should stay high-level and declarative unless a lower-level grammar is clearly required.

Do not use when

• The real task is Deneb or Power BI host work; deneb-authoring should lead and apply Vega-Lite after host constraints are locked.
• The requirement depends on lower-level signals, event streams, or scenegraph control that Vega-Lite cannot express cleanly.
• The user only needs raw Vega structure or debugging.

Precedence / handoff

• If the host is Deneb or Power BI, let deneb-authoring lead and keep this skill focused on the Vega-Lite grammar portion.