Prism Chart

---
name: prism-chart
description: "| Use when asked to implement a chart, select a visualization type, or build a data display component. Examples: \"implement chart for time series\", \"best visualization for comparison data\", \"chart component for analytics\""
allowed-tools: "Read, Bash, Glob, Grep"
category: data-science-and-ml
source_repo: jeremylongshore/claude-code-plugins-plus-skills
source_path: "plugins/ai-agency/tonone/skills/prism-chart/SKILL.md"
source_url: https://github.com/jeremylongshore/claude-code-plugins-plus-skills/blob/HEAD/plugins/ai-agency/tonone/skills/prism-chart/SKILL.md
---


# prism-chart — Chart & Visualization Selection

Follow the output format defined in docs/output-kit.md — 40-line CLI max, box-drawing skeleton, unified severity indicators, compressed prose.

## When to use

User needs a chart implementation, visualization type recommendation, or data display component.

## Workflow

1. **Identify data type** from user request (time series, comparison, distribution, composition, relationship, etc.)
2. **Search chart knowledge base:**
   ```bash
   python3 -m prism_agent.uiux search --domain chart --query "{data_type}" --limit 3
   ```
3. **Evaluate results** for: data volume threshold, accessibility grade, interaction level
4. **Output** recommendation with library choice and accessibility fallback

## Output format

```
┌─ Chart Recommendation — {data_type} ────────────────────────────────┐
│ Chart type:        {chart_type}                                      │
│ Library:           {library} (Chart.js / Recharts / D3 / Plotly)    │
│ Accessibility:     {grade} (AA / A / Below AA)                      │
│ Interaction level: {level} (static / hover / drill-down)            │
│ Data volume:       {threshold} (max recommended data points)        │
├─ Color guidance ────────────────────────────────────────────────────┤
│ {color_guidance}                                                     │
├─ Accessibility fallback ────────────────────────────────────────────┤
│ {fallback_description}                                               │
└──────────────────────────────────────────────────────────────────────┘
```

## Anti-patterns

- Never ignore data volume threshold — recommend aggregation if data exceeds it
- Never skip accessibility fallback for charts graded below AA
- Never choose a chart type based on visual appeal over data clarity
- Never recommend a library without confirming it is compatible with the detected stack

## Delivery

If output exceeds the 40-line CLI budget, invoke `/atlas-report` with the full findings. The HTML report is the output. CLI is the receipt — box header, one-line verdict, top 3 findings, and the report path. Never dump analysis to CLI.

---

**Source:** [`jeremylongshore/claude-code-plugins-plus-skills`](https://github.com/jeremylongshore/claude-code-plugins-plus-skills) → `plugins/ai-agency/tonone/skills/prism-chart/SKILL.md`