# Altair

> Altair declarative statistical visualization reference for Python. Covers chart types, encodings, interactive selections, layering, faceting, transforms, themes, color schemes, dashboards, and large data optimization. Built on Vega-Lite.

- Skill: `bytesagain/altair` (Agent Skill, multi-file: 2 files)
- Install (CLI): `npx skillmds@latest add bytesagain/altair`
- Raw SKILL.md: https://api.skillmd.com/api/skills/bytesagain/altair/raw
- Safety review: pending (external: skill-scanner PASS, skillspector PASS)
- Works with: Claude Code, Claude.ai, OpenAI Codex
- Category: Coding & Dev Tools
- Author: bytesagain (https://skillmd.com/u/bytesagain)
- Updated: 2026-09-21
- Page: https://skillmd.com/skills/bytesagain/altair

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# Altair Reference

Declarative statistical visualization with Python.

## Commands

| Command | Description |
|---------|-------------|
| `intro` | Overview, comparison, install |
| `basics` | Charts, marks, encodings |
| `advanced` | Layers, selections, transforms |
| `styling` | Themes, colors, tooltips |
| `recipes` | Dashboards, maps, export |
| `performance` | Large data strategies |