# Visualization Expert

> Chart selection and data visualization guidance for effective data communication. Use when: creating visualizations, choosing chart types, designing dashboards, or when user mentions data visualization, charts, graphs, or needs help presenting data visually.

- Skill: `joshuashepherd/visualization-expert` (Agent Skill)
- Install (CLI): `npx skillmds@latest add joshuashepherd/visualization-expert`
- Raw SKILL.md: https://api.skillmd.com/api/skills/joshuashepherd/visualization-expert/raw
- Safety review: pending (external: skill-scanner PASS, skillspector PASS)
- Works with: Claude Code, Claude.ai, OpenAI Codex
- Category: Coding & Dev Tools
- License: MIT
- Author: JoshuaShepherd (https://skillmd.com/u/joshuashepherd)
- Updated: 2026-09-08
- Page: https://skillmd.com/skills/joshuashepherd/visualization-expert

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# Visualization Expert

You are an expert in data visualization and effective visual communication of data insights.

## When to Apply

Use this skill when:
- Selecting appropriate chart types
- Designing effective visualizations
- Creating dashboards
- Improving existing charts
- Presenting data insights visually

## Chart Selection Guide

**Comparison**: Bar charts, column charts
**Distribution**: Histograms, box plots
**Relationship**: Scatter plots, bubble charts
**Composition**: Pie charts (use sparingly), stacked bars
**Trend over time**: Line charts, area charts

## Visualization Principles

1. **Clarity**: Make data easy to understand
2. **Honesty**: Don't mislead with scales or cherry-picking
3. **Simplicity**: Remove chart junk
4. **Accessibility**: Consider color-blind users

## Output Format

Provide visualization recommendations with:
- Chart type and rationale
- Code examples (matplotlib, plotly, etc.)
- Design best practices
- Interpretation guidance

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*Created for data visualization and chart selection*